U.S. PATENT AND TRADEMARK OFFICE
Information Products Division |
U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
Patents classified in a subclass may be accessed by either clicking on
the subclass number
preceding each subclass definition or on the
" " icon, below.
( please note that patents for some subclasses may not be available )
For classification search strategies, please refer to the
Classification Index
Explanation of Data web page.
(definitions have been obtained from the
Patents ASSIST CD-ROM which
is produced by the U.S. Patent and Trademark Office
Electronic Products Branch)
Class 252
COMPOSITIONS
Class Definition:
(A) Compositions of matter, having or not having structure,
physical form or heterogeneous arrangement of components and
for which there is no provision elsewhere.
(B) Packages of such compositions, or other articles which
include such compositions for which there is no provision
elsewhere.
(C) Processes of making, or peculiar to making, such
compositions and for which there is no provision elsewhere.
(D) Apparatus for use in or peculiar to such processes and
for which there is no provision elsewhere.
(1) Note. In this class each composition, the processes
that are peculiar to making the same, and apparatus that is
peculiar to such processes, are classified on the whole
composition and its complete, or primary, function or
quality, and such processes and apparatus are classified on
or with the corresponding composition, unless otherwise
indicated.
(2) Note. Elements other than C and H and compounds which
contain such other elements are not considered to be
significant in this class when they originate in and form a
part of petroleum, or fractions thereof, unless such elements
or compounds are separately recited in the claims.
(3) Note. The term "metal" as used in this class includes
As, Sb, Bi, but not B, Si, Se, or Te. The terms "carboxyl"
and "carboxylic", as used in this class, refer to the radical
- COO-.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
A. LINE BETWEEN THIS CLASS, SUBCLASSES 380+ AND THE COMPOUND,
ETC., CLASSES
Compositions that recite a chemical compound or element in
combination with an agent or agents whose sole purpose is to
prevent chemical or physical change (e.g., caking) in the
compound or element, or to prevent corrosion by the compound
or element, are classified with the compound or element.
Processes of preparing such compositions, and processes of
thus preserving the compound or element or preventing
corrosion by the compound or element are also classified with
said compound or element.
Class 252, subclasses 380+ take (1) old compounds limited to
use as preserving agents, and (2) the combination of a
preserving agent with a substance preserved wherein said
substance preserved is so broadly claimed as not to afford a
basis of classification, e.g., "an organic substance."
B. COMPOSITION CLASS SUPERIORITY
The rules for determining class placement of the original
reference (OR) for claimed chemical compositions are as
follows.
When all claims are in the same main class (i.e., a class and
the classes that are an integral part therein are a single
main class), placement of the OR is determined by the first
occurrence in that main class schedule.
Placement of the OR when claims are classified in different
main classes is controlled by the most comprehensive claim.
When there are two or more claims that are equally most
comprehensive and said claims are classified in different
main classes, class placement of the OR is determined among
said claims by first occurrence in the hierarchy set forth
below in the ORDER OF SUPERIORITY FOR COMPOSITION CLASSES.
Class 252, subclass 1, MISCELLANEOUS, is the residual
placement subclass for claimed compositions whether or not of
any special use, property, or function, not provided for
elsewhere in the US Patent Classification System.
For purposes of determining class placement of the OR, a
composition claim is either (1) classifiable per se, i.e.,
recites in the claim a special use, property, or function
which is provided for by the title and definition of a class
or subclass; or (2) not classifiable without recourse to the
specification, i.e., does not recite in the claim a special
use, property, or function provided for by the title and
definition of a class or subclass.
If one or more composition claims are classifiable without
said recourse to the specificaiton, such claim or claims will
control OR placement according to the first occurrence in the
hierarchy set forth below in the ORDER OF SUPERIORITY FOR
COMPOSITION CLASSES. Any claims for which said recourse is
necessary will be placed as cross-references on the basis of
the classification determined by recourse to the
specification. The exception to this placement rule is that,
if the definition of a class or subclass explicitly provides
for "solely disclosed" subject matter (usually a special use)
of that class or subclass, class placement of the OR is that
class or subclass if there is "solely disclosed" class or
subclass subject matter. Examples of classes which provide
for "solely disclosed" subject matter include Classes 424,
426, 508 and 510.
Examples of classes and subclasses which provide for
compositions without a special use basis include Classes 106,
208, 252/363.5, 252/367.1, 252/372+, 252/378, 420, 501, 516,
520, 530, and 585. In the case of one or more composition
claims classifiable in such a class or subclass, class
placement of the OR is determined by first occurrence in the
hierarchy set forth below in the ORDER OF SUPERIORITY FOR
COMPOSITION CLASSES for claims classifiable without recourse
to the specification for disclosed special use/s.
If ALL composition claims are not classifiable without said
recourse to the specification, then each unclaimed disclosed
special use, property, or function will be treated as though
recited in a separate claim and Class placement of the OR is
determined by first occurrence in the hierarchy set forth
below in the ORDER OF SUPERIORITY FOR COMPOSITION CLASSES.
Any explicit statement of a class line or relationship
between classes, set forth in a class (or subclass)
definition or note, will be followed even if in conflict with
the hierarchy set forth below in the ORDER OF SUPERIORITY FOR
COMPOSITION CLASSES.
ORDER OF SUPERIORITY FOR COMPOSITION CLASSES
504, Plant Protecting and Regulating Compositions.
424, Drug, Bio-Affecting and Body Treating Compositions.
514, Drug, Bio-Affecting and Body Treating Compositions
(integral part of Class 424).
426, Food or Edible Material: Processes, Compositions, and
Products.
71, Chemistry: Fertilizers.
435, Chemistry: Molecular Biology and Microbiology.
436, Chemistry: Analytical and Immunological Testing,
subclasses 500 through 548, in the schedule order.
505, Superconductor Technology: Apparatus, Material,
Process, subclasses 100+.
149, Explosive and Thermic Compositions or Charges.
430, Radiation Imagery Chemistry: Process, Composition, or
Product Thereof.
508, Solid Antifriction Devices, Materials Therefor,
Lubricant and Separant Compositions for Moving Solid
Surfaces, and Miscellaneous Mineral Oil Compositions
(integral part of Class 252).
44, Fuel and Related Compositions.
148, Metal Treatment, subclasses 22+.
252, Compositions, subclasses 2 through 611, in the schedule
order.
507, Earth Boring, Well Treating, and Oil Field Chemistry
(integral part of Class 252).
252, Compositions, subclasses 8.57 through 88.2, in the
schedule order.
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions (integral part of Class 252).
252, Compositions, subclasses 175 through 194, in the
schedule order.
502, Catalyst, Solid Sorbent, or Support Therefor: Product
or Process of Making (integral part of Class 252).
252, Compositions, subclass 478 through 407, in the schedule
order.
436, Chemistry: Analytical and Immunological Testing,
subclasses 1 through 183, in the schedule order.
252, Compositions, subclass 408.1 through the end of the
schedule (except Class 516, or subclasses 363.5, 367.1, 372+,
or 378, for which see below).
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers.
429, Chemistry: Electrical Current Producing Apparatus,
Product and Process.
205, Electrolysis: Processes, Compositions Used therein,
and Methods of Preparing the Compositions (integral part of
Class 204).
204, Chemistry: Electrical and Wave Energy.
106, Compositions: Coating or Plastic, subclasses 1.05
through 38.9, in the schedule order.
501, Compositions: Ceramic.
106, Compositions: Coating or Plastic, subclasses 600
through 316, in the schedule order.
51, Abrasive Tool Making Process, Material, or Composition.
75, Specialized Metallurgical Processes, Compositions for
Use Therein, Consolidated Metal Powder Compositions, and
Loose Metal Particulate Mixtures, subclasses 300+.
420, Alloys or Metallic Composition.
148, Metal Treatment, subclasses 400+.
520, Synthetic Resins or Natural Rubbers,
530, Chemistry: Natural Resins or Derivatives; Peptides or
Proteins; Lignins or Reaction Products Thereof, subclasses
200+ and 500+.
208, Mineral Oils: Processes and Products.
512, Perfume Compositions.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting (integral part of Class 252).
252, Compositions, subclasses 363.5, 367.1, 372+, and 378.
423, Chemistry of Inorganic Compounds, subclasses 265+.
585, Chemistry of Hydrocarbon Compounds (see the mixture
subclasses).
252, Compositions, subclass 1 residual location for
unprovided compositions.
This superiority list is not necessarily a complete list and
will be amended as the relationship between other Classes
containing compositions and the above listed Classes is
determined.
C. LINES FOR PARTICULAR CLASS 252 SUBCLASS AREAS.
1. Lines Pertinent to Subclasses 62.51+
a. Lines With Class 148, Metal Treatment:
Subclasses 62.51+ take processes of preparing magnetic
compositions and the compositions resulting therefrom, as
well as such processes followed by a magnetizing and/or broad
molding step. Subclasses 62.51+ also take any combination of
the aforementioned steps with a heat-treating operation,
except where the heat treatment modifies a magnetic property
of a metallic component which is intentionally present in the
composition, ion which case the process is classified in
Class 148.
Class 148, subclasses 100 through 122 take processes fro
altering the magnetic properties of materials having at least
one component which is a free metal or alloy, except as
indicated in the (2) Note in Class 148, subclass 100.
Subclasses 300+ in Class 148 provide for stock resulting from
such processes.
Dust cores made from a Class 252 component, but containing an
intentionally included metallic component, whose magnetic
properties have been modified by heat treatment, are provided
for in one of said subclasses 300+.
b. Lines With Classes 29, Metal Working and 264, Plastic and
Nonmetallic Article Shaping or Treating: Processes:
Class 29 provides for making magnets or cores for
electromagnets from comminuted materials, including from
mixtures of nonmetallic plastic materials and comminuted
metals or magnetic nonmetals. Subclasses 602.1+ of Class 29
provide for methods of manufacturing magnets from nonmetallic
materials which recite some step in addition to one or more
of the following: making the composition, molding, heat
treatment, and magnetizing. Processes restricted to any or
all of the four named operations are classified in this
subclass, 62.51+, of Class 252, except if significant molding
steps are recited.
If significant molding steps are recited, the process is
classified in appropriate subclasses of Class 264,
particularly subclasses 61, 104+, and 272. Class 264
provides for working, shaping, or molding of plastic
materials which may be disclosed to be a magnetic
compositions. See the Class Definition of Class 264 for the
general lines between Class 264 and the composition classes.
c. Lines with Class 210, Liquid Purification or Separation:
Class 210 is the locus for the separating or purification of
a liquid, generally claimed and for the separation,
purification, or treatment of water, specifically. Class 252
in the locus for the resolution of colloids and will take the
separation of liquids, generally claimed, by breaking an
emulsion and including ancillary steps as decanting or
passing through a separatory funnel, etc. Class 210 will take
(a) a step of emulsion breaking of liquids generally claimed,
combined with the separation of a diverse component (unless
also by emulsion breaking), or (b) a step of emulsion
breaking, per se, for the purpose of obtaining water. The
water may be intended for use of for disposal.
d. Lines with Classes 106, Compositions: Coating or Plastic
and 520, Synthetic Resins or Natural Rubbers:
Thus a composition which would otherwise be classified in
Class 106, or in the Class 520 series would be classified
herein if it is claimed as being electrically conductive or
emissive or is so disclosed and the claims are generic as to
the composition. As to methods of preparing the composition
or device, this and indented subclasses will take those
methods ordinarily classified in Class 106 within the limits
set forth in section IV and (4) Note of the class definition
of Class 106. The same limitations apply as between these
subclasses and Class 260.
e. Lines with Class 250, Radiant Energy :
The line between Class 250 and this and indented subclasses
is that Class 250 takes radioactive compositions combined
with apparatus (structure); whereas Class 252, subclasses
625+ are limited to compositions, per se, or devices
(structure) defined only in terms of their composition.
The line between Class 250 and Class 252, subclasses 625+, is
that Class 250 takes radioactive compositions combined with
apparatus (structure); Class 252, subclasses 625+, on the
other hand, is limited to compositions, per se, or devices
(structure) defined only in terms of their compositions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
61 175, 179, 193, 319, 410, and 427 for Search Class
references to Liquid Purification or Separation, for
separation processes and apparatus there provided for.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers. See the main class
definition for the compositions classified therein.
15, Brushing, Scrubbing, and General Cleaning, for dust
cloths, mops or other cleaning devices which include
detergents.
44, Fuel and Related Compositions, appropriate subclasses for
a solid or gelled composition to be used either as a fuel or
as a carbonaceous reductant in a metallurgical process,
subclass 643 for a match scratcher composition or structure,
subclasses 640, 641 or 642 for a composition which, when
present with a burning solid fuel retards or removes wall
deposits, improve the combustion properties of the fuel or
colors the flames, respectively, and subclasses 300+ for
liquid fuel.
48, Gas: Heating and Illuminating, for gaseous compositions
for heating or illuminating by combustion.
51, Abrasive Tool Making Process, Material, or Composition,
for a composition for grinding, polishing, or abrading.
60, Power Plants, see class definition, search note to this
class for the line between Class 60 and this class.
62, Refrigeration, see class definition, search note to Class
252, Compositions, for the line.
71, Chemistry: Fertilizers, for a plant fertilizing
composition.
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, for processes of obtaining free
metals from metal compounds, ores, or mixtures, or preparing
materials for such processes, or compositions for use in such
processes, and for alloys and other compositions having a
continuous phase of free metal, e.g., made from metal
powder.
99, Foods and Beverages: Apparatus, for apparatus for making
food compositions.
106, Compositions: Coating or Plastic, for coating or
plastic compositions and materials or ingredients used in the
making of coating or plastic compositions which are not
elsewhere classified. See References To Other Classes in
Class 106 for coating or plastic compositions classified in
classes other than those in Class 106. In particular, see
the reference to Class 252 for the line between Classes 106
and 252.
117, Single-Crystal, Oriented-Crystal, and Epitaxy Growth
Processes; Non-Coating Apparatus Therefor, for processes and
non-coating apparatus for growing therein-defined
single-crystal of all types of materials, including inorganic
or organic.
127, Sugar, Starch, and Carbohydrates, for processes and
apparatus for refining and manufacturing sugar, starch and
carbohydrates and for the products produced.
131, Tobacco, for tobacco compositions and tobacco substitute
compositions.
134, Cleaning and Liquid Contact With Solids, for washing or
cleaning processes, which include use of detergents, or
apparatus therefor or for contacting liquids with solids.
148, Metal Treatment, for soldering or other fluxing
compositions, compositions for use in tempering or otherwise
modifying solid metal.
149, Explosive and Thermic Compositions or Charges, for
explosive and thermic compositions where the latter are used
to produce usable heat or flame and by-products resulting
from the use of such compositions.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
Class 252 provides for etching agents, per se, and for single
crystal compositions within the class definitions, especially
subclass 62.3 for barrier layer compositions.
162, Paper Making and Fiber Liberation, appropriate
subclasses, for chemical processes of liberating cellulose
and other fibers from fibrous materials, for processes of
making paper by depositing fibers from a liquid suspension
and for compositions employed in such processes.
166, Wells, 244.1 for processes of treating or operating a
well. See the Notes and Search Class references therein.
169, Fire Extinguishers, for fire extinguishing processes.
184, Lubrication, for lubricating devices and processes.
201, Distillation: Processes, Thermolytic, appropriate
subclasses, for a carbonizing process and subclass 20, 21+
and 25 for special carbonaceous compositions used in
thermolytic distillation.
202, Distillation: Apparatus, appropriate subclasses for
apparatus for making or reactivating solid carbonaceous
sorbents.
203, Distillation: Processes, Separatory, appropriate
subclasses for a distillation process not otherwise provided
for.
204, Chemistry: Electrical and Wave Energy, for processes
involving electrolysis, producing chemical changes by use of
electrical or wave energy, involving electrophoresis or
electro-osmosis, or electrical separation or purification of
liquids including emulsion breaking and resolving other
colloid systems. Compositions which are the result of a wave
energy process are classified with the art use of said
composition.
208, Mineral Oils: Processes and Products, for processes of
cracking, distilling, purifying or otherwise treating mineral
oils or tars or the products of such processes including
lubricants, heat-exchange hydraulic and dielectric or
electrical resistance compositions that are purely mineral
oil or tar products, or mixtures thereof without any added
specifically recited chemical compound or element.
216, Etching a Substrate: Processes, for etching processes.
239, Fluid Sprinkling, Spraying, and Diffusing, for processes
or apparatus for dispersing liquid gases, especially subclass
8, 9, 337+, and 398+.
260, Chemistry of Carbon Compounds, for compositions
containing a natural rubber and for an organic compound, or a
composition of an organic compound and an agent for
inhibiting caking of, corrosion by chemical decomposition of,
or other chemical changes of, the carbon compound, or
processes of so preserving such compounds.
366, Agitating, and the notes thereto for processes and
apparatus for mixing materials by agitation. Manipulative
mixing processes for compounding a composition from a
plurality of ingredients are properly classifiable in Class
366 only if the ingredients are not sufficiently identified
to form a basis of classification in this class (252) or
other appropriate composition classes.
376, Induced Nuclear Reactions: Processes, Systems, and
Elements, appropriate subclasses especially 156 for the
production and/or utilization of radioactive substances and
compositions.
401, Coating Implements With Material Supply, subclass 49
for a piece of self-sustaining coating material having a
shaped end for rubbing contact with a workpiece.
404, Road Structure, Process, or Apparatus, appropriate
subclasses, for (1) highway, pathway or walkway structure,
per se; and (2) process and apparatus for making, installing,
repairing or maintaining such structure-where such structure,
process or apparatus is not otherwise classifiable as either
(a) specifically provided for in other loci or (b) of such
general utility as to be provided for on that basis (See
Subclass References to the Current Class and References to
Other Classes in the Class 404 Class Definition for known
collections of such nature and the particular lines of
demarcation).
420, Alloys or Metallic Composition, appropriate subclasses
for alloys, intermetallic compounds and metallic
compositions. See Class 420, Lines With Other Classes and
Within This Class, for an elaboration of the line between
Class 420 and this class (252).
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, subclass 55 for
litmus and other test papers and analogous devices; also
appropriate subclasses for apparatus employing catalysis.
423, Chemistry of Inorganic Compounds, appropriate subclasses
for inorganic compounds and nonmetallic elements, including
processes for their manufacture, and note especially 265 for
inorganic compounds and nonmetallic elements which include an
additive whose sole function is to preserve the compound or
element. For a further statement of the lines between this
class and Class 423 see the notes in 423.
424, and 514, Drug, Bio-Affecting and Body Treating
Compositions, appropriate subclasses for: compositions (A)
for preventing, alleviating, treating or curing abnormal and
pathological conditions of the living body, for maintaining,
increasing, decreasing limiting or destroying a physiologic
body function, for diagnosing a physiological condition or
state by an in vivo test, for controlling or protecting an
environment or living body by attracting, disabling,
inhibiting, killing, modifying, repelling, or retarding an
animal or micro-organism, (B) for deodorizing, protecting,
adorning, or grooming a body, (C) for fermentates and
extracts for use in A or B and not elsewhere provided for,
and (D) such compositions defined in terms of specific
structure; methods of making the above compositions; methods
of using the class defined compositions for purposes in A and
B; and methods of using compounds, per se, for purposes in A
and B.
426, Food or Edible Material: Processes, Compositions, and
Products, for food products, compositions and processes of
treating same.
427, Coating Processes, for coating processes in general and
see the class definition of Class 427 for the general line
between Class 427 and the composition classes.
428, Stock Material or Miscellaneous Articles, main Class
Definition, Lines With Other Classes and Within This Class,
Compounds and Compositions, for the distinction between a
composition and a stock material, and also 544 for a stock
material which is all metal or has adjacent metal components,
particularly subclasses 546+ for composite stock having a
particulate metal component.
430, Radiation Imagery Chemistry: Process, Composition, or
Product Thereof.
435, Chemistry: Molecular Biology and Microbiology, for
processes of making chemical compounds which include
fermentation or ferments or other compositions for use in
such processes or processes of making them.
436, Chemistry: Analytical and Immunological Testing, for
chemical testing compositions including test standards.
504, Plant Protecting and Regulating Compositions, for a
plant stimulating or eradicating composition and especially
150 for an algicidal composition.
505, Superconductor Technology: Apparatus, Material,
Process, 100 for high temperature (T[subscrpt]c[end
subscrpt] 30 K) superconducting materials, per se, or
subclasses 300+ for processes of producing same.
520, Synthetic Resins or Natural Rubbers, for synthetic
resins, per se, and for resin containing compositions, the
use or utility of which is not specifically provided for
elsewhere. See Lines With Other Classes and Within This
Class in the Class Definition of this class (252) above.
Class 520 is the residual class for solid resin containing
subject matter.
585, Chemistry of Hydrocarbon Compounds, 1 for a composition
consisting of only hydrocarbons, at least one component of
which is a nonmineral oil hydrocarbon, or a composition of a
hydrocarbon with an agent for improving the general
properties of such hydrocarbon. See Lines With Other Classes
and Within This Class in the Class Definition of this class
(252) above.
SUBCLASSES
Subclass:
1
This subclass is indented under the class definition.
Compositions for which there is no provision elsewhere in
this class (e.g., artificial snow).
Subclass:
2
This subclass is indented under the class definition.
Compositions specialized and designed for or peculiar to use
in extinguishing fires or processes of making them.
SEE OR SEARCH THIS CLASS, SUBCLASS:
381 for compositions for forming protective coatings,
layers, or zones for excluding air or other substances.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, subclass 96 for compositions for
forming protective coatings, layers, or zones for protecting
molten metal from oxidation.
169, Fire Extinguishers, for fire extinguishing processes or
apparatus.
Subclass:
3
This subclass is indented under subclass 2. Compositions
which are, or contain, foams or gas phases or processes of
making the same.
SEE OR SEARCH THIS CLASS, SUBCLASS:
6 and 7, for fire extinguishive compositions containing
components for producing foams.
8 for gas-charged liquids or processes of making them for
extinguishing fires.
61 for compositions for producing foams for froth
flotation.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 10 for foam colloid systems or agents for such
systems or making or stabilizing such systems or agents, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
4
This subclass is indented under subclass 2. Compositions
which contain components for generating gas by chemical
reactions, substances peculiar thereto or processes which
include such reactions.
Subclass:
5
This subclass is indented under subclass 4. Compositions
which contain components for generating gas by combustion of
such components, substances peculiar thereto, or processes
which include such combustion.
Subclass:
6
This subclass is indented under subclass 4. Compositions
which contain components for generating gas by chemical
interreaction of such components, substances peculiar
thereto, or processes which include such interaction.
(1) Note. Claims which are drawn to compositions which are
chemically decomposable by heat to form a fire extinguishive
gas, but do not contain individually components which are
adapted to chemically interreact to produce a gas are not
classified in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 for fire extinguishive foams.
61 for compositions for making foam for froth flotation.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 10 for foam colloid systems or agents for such
systems or making or stabilizing such systems or agents, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
6.5
This subclass is indented under subclass 6. Compositions
which contain agents for stabilizing foams or other colloid
systems and processes of making them.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 8.05 and 61, for other compositions containing foam
stabilizing agents.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 10 for foam colloid systems or agents for such
systems or making or stabilizing such systems or agents, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
7
This subclass is indented under subclass 4. Compositions
which contain carbonates, ammonium compounds, or other
substances which are adapted to generate gas by
heat-decomposition thereof, substances peculiar thereto or
processes which include such heat-decomposition.
Subclass:
8
This subclass is indented under subclass 2. Compositions
which contain volatile noninflammable liquids (other than
water) or liquids charged with gases, the gases being
dissolved or liquefied, or processes of making the same.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 for fire extinguishive compositions which contain foams or
gas phases.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 10 for foam colloid systems or agents for such
systems or making or stabilizing such systems or agents, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
8.05
This subclass is indented under subclass 2. Compositions
which contain agents for stabilizing foams or other colloid
systems, and processes of making them.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 6.5, and 61, for other compositions containing foam
stabilizing agents.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 10 for foam colloid systems or agents for such
systems or making or stabilizing such systems or agents, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
8.57
This subclass is indented under the class definition.
Compositions for treating leather or fur not more
specifically provided for elsewhere.
(1) Note. Patents which claim a composition falling within
this subclass and also claim (a) processes involving no more
than the mere application of a composition to leather or fur
and/or (b) a leather or fur product characterized essentially
by the application of the composition are classified herein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
8.61 through 8.91, for textile treating compositions.
601 for compositions for fireproofing leather or hide.
SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers, 404 for leather or fur
dyeing compositions, and subclasses 94.1+ for (1) tanning
compositions, (2) compositions which chemically react with a
hide, skin, or fur, and (3) compositions for treating
untanned hides or skins and are not more specifically
provided for elsewhere.
106, Compositions: Coating or Plastic, for leather coating
compositions.
424, Drug, Bio-Affecting and Body Treating Compositions, for
a composition for destroying or repelling a pest and which
may be used to coat or saturate leather or fur.
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, particularly subclass 275 for cleaning
compositions for leather or fur.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
8.61
DURABLE FINISHES FOR TEXTILE MATERIALS, OR PROCESSES OF
PREPARING (E.G., CREASE RESISTANT, MOISTURE ABSORBENT,
ANTISTATIC, ETC., FINISHES):
This subclass is indented under the class definition.
Compositions specialized or designed for forming a lasting,
nonfugitive finish on a textile substrate, such as fabric,
yarn, or fiber, or processes of preparing the compositions.
(1) Note. Formation of these durable finishes (e.g.,
permanent-press, etc.) usually requires an additional step,
such as application of heat, in order to "set" the coating
after application.
(2) Note. Processes involving the mere use of a claimed
composition are included in this and indented subclasses. If
no composition is claimed or significant process steps are
involved in addition to such mere use, the patent is
classifiable in other appropriate classes.
(3) Note. As used herein, the term "textile materials"
includes fabrics (woven, knitted, etc.), yarn, filaments, and
fibers.
(4) Note. Patents including claims to both a composition
and a textile material treated with the composition are
classified in the class providing for the treated material
and cross-referenced to this or indented subclasses.
SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers, subclass 112 for
carroting compositions and subclasses 125+ for mercerizing
baths.
427, Coating Processes, appropriate subclasses for processes
of producing durable finishes on textile materials.
428, Stock Material or Miscellaneous Articles, appropriate
subclasses, particularly 224 and 357+, for textile materials
carrying durable finishes.
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, 515 for nondurable antistatic compositions
used in the course of a laundering operation or in a
finishing step, such as rinsing or drying, accompanying
laundering.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
8.62
Oil or water repellent or soil resistant or retardant:
This subclass is indented under subclass 8.61. Compositions
adapted to form on the substrate treated therewith an
oleophobic or hydrophobic finish, or one which prevents the
adherence of soil, such as spilled food, to the substrate.
Subclass:
8.63
Textile softening:
This subclass is indented under subclass 8.61. Compositions
adapted to impart a soft feel or hand to the substrate
treated therewith, other than laundry-use products.
SEE OR SEARCH CLASS:
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, 276 for cleaning compositions for textile
materials and subclasses 515+ for nondurable textile
softening compositions used in the course of a laundering
operation or in a finishing step, such as rinsing or drying,
accompanying laundering.
Subclass:
8.81
TEXTILE PROCESSING AID COMPOSITIONS, OR PROCESSES OF
PREPARING (E.G., LUBRICANTS OR ANTISTATIC AGENTS FOR FIBER,
YARN, FABRIC, ETC.):
This subclass is indented under the class definition.
Compositions specialized and designed to facilitate the
processing of textile materials, such as the conversion of
fibers, filaments, yarns, or fabrics into the finished
product (such as thread or yarn; knitted, woven, or nonwoven
fabric; or garment, carpet, blanket, etc.) whereupon the
finish may be removed by such means as washing or scouring.
(1) Note. Such finishes are applied to staple fiber or
continuous-filament yarns in order to reduce the tendency
toward breakage of the individual fibers or filaments making
up the yarn when subjected to mechanical processing, such as
spinning, twisting, winding, texturizing by crimping or false
twisting, etc.
(2) Note. Processes involving the mere use of a claimed
composition are included in this and indented subclasses. If
no composition is claimed or significant process steps are
involved in addition to such mere use, the patent is
classifiable in other appropriate classes.
(3) Note. Patents including claims to both a composition
and a textile material treated with the composition are
classified in the class providing for the treated material
and cross-referenced to this or indented subclasses.
SEE OR SEARCH CLASS:
427, Coating Processes, appropriate subclasses, for processes
of applying processing aid compositions to textile
materials.
428, Stock Material or Miscellaneous Articles, appropriate
subclasses, particularly 224 and 357+, for textile materials
carrying processing aid compositions.
508, Solid Antifriction Devices, Materials Therefor,
Lubricant or Separant Compositions for Moving Solid Surfaces,
and Miscellaneous Mineral Oil Compositions, for nontextile
lubricant compositions
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
8.82
For tire cord yarn, elastomeric filaments, or biologically
innocuous or absorbable fibers (e.g., spandex, textiles used
in food packaging, absorbable surgical sutures, etc.):
This subclass is indented under subclass 8.81. Compositions
specialized for use on tire-reinforcing yarn or cord;
elastomeric filaments, such as spandex; or fibers exhibiting
harmlessness to, or absorbability by, the tissues of a living
organism.
Subclass:
8.83
Sizing agents (e.g., for weaving yarn, etc.):
This subclass is indented under subclass 8.81. Compositions
specialized for maintaining the integrity of fibers or
filaments making up a thread or yarn while it is being
converted into a fabric, such as by knitting or weaving, or
of threads or yarn making up a fabric which is being
converted into a finished article by sewing or other means.
Subclass:
8.84
For textile materials consisting wholly or in part of
noncellulosic synthetic fibers (e.g., spin finish for nylon,
polyester, acrylic, etc., fibers; lubricants for blends
thereof with diverse fibers, etc.):
This subclass is indented under subclass 8.81. Compositions
wherein the textile material includes or consists of
polymeric fibers which are synthesized from starting
materials other than cellulose or its derivatives and are
sometimes referred to as man-made fibers.
(1) Note. A spin finish, which is generally applied
immediately after extrusion of the polymeric filament and
prior to drawing, comprises a combination of a
lubricant/antistatic agent system. The finish facilitates
subsequent processing of the filaments into yarn at very high
speeds, involving the generation of electrostatic charges and
friction, by preventing breakage of or damage to the
filaments.
(2) Note. Included in this subclass are blends of two or
more synthetic fibers and blends of a synthetic fiber with
animal hair, silk, or cellulosic fiber.
Subclass:
8.85
For textile materials consisting wholly or in part of animal
hair fibers (e.g., wool, etc.):
This subclass is indented under subclass 8.81. Compositions
wherein the textile material includes or consists of fibers
which are the hair or fur of an animal, such as vicuna.
(1) Note. Included in this subclass are blends of two or
more animal hair fibers and blends of an animal hair fiber
with silk or cellulosic fiber.
Subclass:
8.86
For textile materials consisting wholly or in part of silk or
cellulose-based fibers (e.g., cotton; artificial silk, such
as rayon, cellulose acetate, etc., or blends thereof; silk
soaking compositions; etc.):
This subclass is indented under subclass 8.81. Compositions
wherein the textile material includes or consists of silk
fibers or fibers of cellulose or its derivatives.
(1) Note. Fibers made of regenerated cellulose (e.g.,
rayon) or of cellulose esters or ethers, such as cellulose
acetate, are sometimes referred to as semisynthetic fibers or
artificial silk.
(2) Note. Included in this subclass are blends of any one
or more fibers with any other fiber under the subclass
definition, such as linen, jute, hemp, etc.).
(3) Note. Many compositions in this subclass facilitate
processing by softening (making more flexible) the above
fibers or materials made therefrom.
Subclass:
8.91
COMPOSITIONS FOR ENHANCING THE APPEARANCE OF CONSUMER TEXTILE
GOODS (OTHER THAN CLEANING COMPOSITIONS OR AUXILIARY
COMPOSITIONS FOR CLEANING), OR PROCESSES OF PREPARING (E.G.,
ANTISTATIC OR WRINKLE-REMOVING SPRAY FOR GARMENTS, ETC.):
This subclass is indented under the class definition.
Compositions specialized or designed for increasing the
positive visual impact of textile goods being used by a
consumer, such as by reducing static cling or eliminating
wrinkling by relaxing the fibers of an article of apparel, or
processes of preparing the compositions.
(1) Note. Processes involving the mere use of a claimed
composition are included in this and indented subclasses. If
no composition is claimed or significant process steps are
involved in addition to such mere use, the patent is
classifiable in other appropriate classes.
SEE OR SEARCH CLASS:
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, 276, for cleaning compositions for textile
materials; subclasses 515+ for textile softening or
antistatic compositions used in the course of a laundering
operation or in a finishing step, such as rinsing or drying,
accompanying laundering.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
60
This subclass is indented under the class definition.
Compositions specialized and designed for, or peculiar to,
use in physically separating from each other, by
froth-flotation or difference in specific gravity or rate of
subsidence, two or more components of a mixture which differ
from each other at least physically, or processes of making
them.
SEE OR SEARCH THIS CLASS, SUBCLASS:
181.1 for getter and gas or vapor generating compositions
for electric lamps, electric space discharge devices and
other evacuated or gas or vapor filled containers.
SEE OR SEARCH CLASS:
209, Classifying, Separating, and Assorting Solids, for
processes or apparatus for using such compositions.
Subclass:
61
This subclass is indented under subclass 60. Compositions
for use in separating components of mixtures by
froth-flotations or in each case by selective or differential
adherence of the composition, or agent containing the same,
with respect to two or more of the components of the
mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 6.5, 7, and 8.05, for foams, foamable liquids, and foam
stabilizing or producing agents.
88 for selective or differential particle-adherent
compositions.
SEE OR SEARCH CLASS:
209, Classifying, Separating, and Assorting Solids, subclass
5, 45+, and 163+ for processes or apparatus employing such
agents.
210, Liquid Purification or Separation, 703 for processes of
precipitation involving flotation, and subclasses 198.1+
particularly subclasses 220+ for separators having means to
add a treating material.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 10 for foam colloid systems or agents for such
systems or making or stabilizing such systems or agents, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
62
This subclass is indented under the class definition.
Compositions specialized and designed for use as heat or
sound insulating or deadening materials, substances peculiar
to such compositions, or processes of making the same.
SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, appropriate
subclasses, particularly subclass 122, 601+ and 672+ for
porous coating or plastic compositions.
181, Acoustics, 284 for a panel, web or sheet product with
particular internal or external structure disclosed as being
provided for the purpose of muffling sound.
428, Stock Material or Miscellaneous Articles, appropriate
subclasses for a stock material product in the form of a
single or plural layer web or sheet which may inherently
possess sound deadening or heat insulating properties; note
especially 131 for such a product including apertures,
subclasses 297+ for such a product including a component
containing structurally defined fibers, subclasses 304.4+ for
such a product including a component which is porous or
cellular, subclasses 323+ for such a product having a
component containing structurally defined particles,
subclasses 357+ for a mass or layer of a structurally defined
or coated element (e.g., flake, particle, rod, strand or
fiber); and subclass 920 (a cross-reference art collection)
for a product having heat insulating properties.
501, Compositions: Ceramic, subclass 39 and 80+ for
pore-forming ceramic compositions.
Subclass:
62.2
This subclass is indented under the class definition.
Compositions specialized and designed for use as an
electrolyte for an electrolytic cell of the type which is
used merely as an electrical circuit component.
SEE OR SEARCH CLASS:
205, Electrolysis: Processes, Compositions Used Therein, and
Methods of Preparing the Compositions, for electrolytic
processes and the electrolyte compositions used therein.
361, Electricity: Electrical Systems and Devices, 500 for
electrolytic devices, e.g., capacitors, rectifiers, not
elsewhere classifiable, the electrolytes for which generally
are found in this subclass (62.2).
429, Chemistry: Electrical Current Producing Apparatus,
Product and Process, 188 for battery electrolytes.
Subclass:
62.3
This subclass is indented under the class definition.
Compositions specialized and designed for use as one member
of two members whose interface exhibits barrier layer
properties.
(1) Note. A barrier layer device is defined for the purpose
of classification as an electrical component consisting of
two conductors placed either in contact with each other or
separated by an interface layer, to which contacts or
terminals have been secured which component has a nonlinear
resistance characteristic. The nonlinear resistance
characteristic may be such that the device will pass current
in one direction when the voltage is applied in one direction
but will not pass any appreciable current when the voltage is
applied in the other direction (e.g., rectifiers,
electrolytic condensers), or will pass a proportionately
different amount of current at different values of applied
voltage. In the latter case, where the device passes a
disapportionate amount of current, to be considered a barrier
layer device the nonlinearity must arise as a result of the
electrical action of the interface between the two conductors
rather than from the characteristics of the conductors. For
example, an electrical component having a resistance material
which varies its resistance due to inherent changes in
temperature with change in applied voltage is not a barrier
layer device. Among the types of devices which may have a
barrier layer are rectifiers, condensers, transistors and
lightning arresters.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, subclass .5 for single metals
including those containing a nonmetallic constituent,
subclass 236 for a composition having a continuous phase of
free metal made by consolidating metal particles and
containing carbide, and subclass 245 for such composition
having a transition metal base.
117, Single-Crystal, Oriented-Crystal, and Epitaxy Growth
Processes; Non-Coating Apparatus Therefor, for processes and
non-coating apparatus for growing therein-defined
single-crystal of all types of materials, including those
which may be suitable as or to produce a barrier layer
device. Class 118, Coating Apparatus, generally provides for
coating apparatus, including single-crystal (e.g., epitaxy)
coating means.
136, Batteries: Thermoelectric and Photoelectric, 236 for
thermoelectric batteries having a particular composition and
at least two elements of the battery, particularly subclasses
238 and 239 for semiconductive type.
148, Metal Treatment, 33 for layered stock material made
from compositions of this subclass and for superlattice
compositions.
257, Active Solid-State Devices (e.g., Transistors,
Solid-State Diodes), for devices which operate based on a
barrier region or layer.
361, Electricity: Electrical Systems and Devices, 212 for
discharging or preventing accumulation of electric charge,
and subclasses 500+ for electrolytic devices such as
electrolytic condensers and rectifiers.
420, Alloys or Metallic Compositions, appropriate subclasses
for single metals and alloys or metallic compositions and
subclass 903 for a cross reference collection of alloys
which are semiconductors.
428, Stock Material or Miscellaneous Articles, subclass 620
for metallic stock material having a semiconductor
component.
438, Semiconductor Device Manufacturing: Process, for
processes of making semiconductor devices utilizing
compositions of this subclass.
Subclass:
62.51
This subclass is indented under the class definition.
Compositions disclosed to be useful for magnetic purposes as
well as compositions and processes for making same.
(1) Note. This subclass takes processes of preparing
magnetic compositions and the compositions resulting
therefrom, as well as such processes followed by a
magnetizing and/or broad molding step. It also takes any
combination of these steps with a heat treating operation
except where the heat treatment modifies a magnetic property
of a metallic component which is intentionally present in the
composition.
(2) Note. This subclass includes magnetic articles claimed
in terms of the composition from which it is made, when said
articles do not contain sufficient structural limitations to
classify them elsewhere.
(3) Note. In some instances it is difficult to tell whether
a fused mixture of oxides (e.g., ferrites) is a compound or a
composition. If a claim of this type is restricted to atoms
combined in definite, whole number ratios, the product is
considered a compound. However, a patent not so limited;
e.g., if the ratios of the elements are variable or
"impurities" are intentionally present, is considered to be
drawn to a composition classifiable in this or indented
subclasses.
(4) Note. See section II, B, LINES WITH OTHER CLASSES AND
WITHIN THIS CLASS in the Class Definition for this class
(252), for a discussion of the lines between this subclass
area and other classes.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, appropriate subclasses for loose
metal powder compositions and consolidated compositions
having a random mixture of ingredients and a continuous phase
of free metal, even when claimed as magnetic and/or nominally
claimed as a rod, wire, strand, etc., especially 255 for a
composition of loose metal particles.
106, Compositions: Coating or Plastic, for strands,
filaments and compositions distinguished solely by being made
of plastic compositions (e.g., mixtures of metal powders and
a plastic or coating composition). Such compositions are
classified for the most part, in Class 106 in the subclasses
entitled "With filler, dye or pigment". All magnetic
compositions which would otherwise be classified in Class 106
are provided for in this subclass (62.51+) and its indents.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 209 for magnets and subclasses 296+ for
magnet structure, per se. See subclass 284 for magnetizing
and demagnetizing apparatus.
360, Dynamic Magnetic Information Storage or Retrieval, 131
for magnetic records claimed in terms of significant
structure. Note that merely claiming the record as a wire,
filament, rod, ribbon, strand or record, or no more structure
than one or more coatings on a base is not significant
structure under the definition of 360-131+.
419, Powder Metallurgy Processes, appropriate subclasses,
especially 61 for processes for making articles, which may
be magnetic, from metal containing powders using pressure but
no heat; and subclasses 1+ for similar process involving use
of heat.
420, Alloys or Metallic Compositions, appropriate subclasses
for a single elemental metal and for an alloy or metallic
composition defined only as "magnetic", "magnetized" or
"permanent magnet" or alloys or metallic composition claimed,
per se, which are inherently magnetic.
423, Chemistry of Inorganic Compounds, for magnetic inorganic
compounds, per se.
427, Coating Processes, 127 for coating processes, per se,
including a magnetic base or coating.
428, Stock Material or Miscellaneous Articles, 544 for stock
material which is all metal or has adjacent metal components,
even though claimed as being formed of magnetic material,
particularly subclasses 548+ for sintered composite metal
stock, subclass 611 for stock material having its magnetic
properties coordinated with its shape, subclasses 681+ for a
metallic composite which has an iron-base component, and
subclass 928 for metallic stock distinguished by magnetic
properties. See the main Class Definition of Class 428,
Lines With Other Classes, "Compounds and Compositions" for
the distinction between a composition and a stock material.
520, Synthetic Resins or Natural Rubbers, for compositions
containing a synthetic resin or natural rubbers and
comminuted metal. All magnetic compositions which would be
classified in the Class 520 area are provided for by this
subclass (62.51+).
523, Synthetic Resins or Natural Rubbers, subclass 181 for a
composition devoid of a magnetic material but which is
designed to contain same.
Subclass:
62.52
This subclass is indented under subclass 62.51. Compositions
intended for use in processes of testing articles for flaws,
e.g., "Magnaflux," or for use in magnetic clutches.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 21.5 for
clutches employing a medium having frictional characteristics
which are augmented or altered in response to a magnetic
field.
324, Electricity: Measuring and Testing, subclass 216 for
methods and apparatus for magnetic flaw detection.
Subclass:
62.53
This subclass is indented under subclass 62.51. Compositions
which contain a resin, wax, gum, or bitumenous material or
modified forms thereof. The term gum includes, e.g., natural
rubber and balatta. Many of the patents in this subclass are
drawn to particles of magnetic material in a resin wax or gum
binder for use as magnetic coatings or to be molded into
magnetic articles (e.g., tapes).
(1) Note. This subclass includes, e.g., cellulose ethers
and esters, drying oils, shellac, varnish, gum tragacanth,
and modified natural resins.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62.51 the definition thereof, for search information
relative to related coating or molding materials in other
classes.
Subclass:
62.54
This subclass is indented under subclass 62.53. Compositions
containing a synthetic resin or materials disclosed to be
polymerizable or resinifiable to produce a synthetic resin.
(1) Note. A synthetic resin for purposes of this subclass
is a solid film forming or moldable polymeric material having
physical properties akin to natural resins, the polymer
chains of said synthetic resins having been prepared by the
reaction of nonresinous compounds. This subclass also
includes compositions containing nonresinous compounds which
are recited as resinifiable to produce a synthetic resin as
defined above and composition containing a catalyst to effect
such resinification.
(2) Note. Specifically excluded from this subclass are
natural drying oils and the dried compositions therefrom and
cellulose or its derivatives.
Subclass:
62.55
This subclass is indented under subclass 62.51. Compositions
containing a free metal or an alloy thereof.
(1) Note. Arsenic is considered to be a metal for purposes
of this subclass.
(2) Note. Intermetallic compounds are considered alloys
under this subclass definition, e.g., CoPt, GdOs2.
Subclass:
62.56
This subclass is indented under subclass 62.51. Compositions
which contain compounds of iron and oxygen.
(1) Note. Most of the patents in this and indented
subclasses are drawn to so called "ferrites," namely complex
oxides of iron and other elements. The term ferrite is used
in the art both to denote definite compounds of iron with
other metals and oxygen, and to generically cover
compositions of fused mixed oxides of varying composition
classifiable in this class.
(2) Note. In some instances it is difficult to tell whether
a fused mixture of oxides (e.g., ferrites) is a compound or a
composition. If a claim of this type is restricted to atoms
combined in definite, whole number ratios, the product is
considered a compound. However, a patent not so limited;
e.g., if the ratios of the elements are variable or
"impurities" are intentionally present, is considered to be
drawn to a composition classifiable in this or indented
subclasses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62.55 for compositions containing both an iron-oxygen
compound and a free metal.
SEE OR SEARCH CLASS:
423, Chemistry of Inorganic Compounds, for definite compounds
of iron with other metals and oxygen.
Subclass:
62.57
This subclass is indented under subclass 62.56. Compositions
containing scandium, yttrium, gallium or an element from the
rare earth or actinide series in chemically combined form.
(1) Note. Rare earth includes an element of the Lanthanum
series, atomic numbers 57-71 inclusive.
(2) Note. Actinides includes the elements of atomic numbers
89-103.
Subclass:
62.58
This subclass is indented under subclass 62.56. Compositions
containing boron in any form or aluminum, thallium, or indium
in chemically combined form.
Subclass:
62.59
This subclass is indented under subclass 62.56. Compositions
containing silicon in any form or titanium, zirconium,
hafnium, germanium or indium in chemically combined form.
Subclass:
62.6
This subclass is indented under subclass 62.56. Composition
containing a group I metal in chemically combined form. This
subclass and its indent encompasses both subgroups IA and IB
and specifically includes lithium (see subclass 62.61),
sodium, potassium, rubidium, cesium, francium, copper, silver
and gold.
Subclass:
62.61
This subclass is indented under subclass 62.6. Compositions
wherein the group I metal is lithium.
Subclass:
62.62
This subclass is indented under subclass 62.56. Compositions
containing a group II metal or lead in combined form. Group
II metal as used in this and indented subclasses encompasses
subgroups IIA and IIB and specifically includes beryllium,
magnesium, calcium, strontium, barium, radium, zinc, cadmium
and mercury.
Subclass:
62.63
This subclass is indented under subclass 62.62. Compositions
containing calcium, barium, strontium or lead.
Subclass:
62.64
This subclass is indented under subclass 62.62. Compositions
containing magnesium.
Subclass:
62.9
This subclass is indented under the class definition.
Compositions specialized and designed for use as
piezoelectric materials and processes of making said
compositions.
(1) Note. A piezoelectric material, for the purpose of this
definition, is defined as a material which exhibits an
electrostatic polarization when subjected to mechanical
stress or which exhibits a mechanical stress, tending to
produce a deflection when subjected to electric stress.
(2) Note. Compositions, per se, are classified in this
subclass when, by either disclosure or claim, the composition
is piezoelectric.
SEE OR SEARCH THIS CLASS, SUBCLASS:
567 and 570+, for miscellaneous dielectric compositions,
which should be considered as a field of search because some
dielectrics, such as those used in electrets (the
electrostatic analogue of the permanent magnet) which exhibit
permanent polarization are believed to inherently possess
piezoelectric properties.
SEE OR SEARCH CLASS:
23, Chemistry: Physical Processes, 295 for processes of
crystallizing inorganic polycrystalline chemical compounds;
the products of these processes, and the seed crystals used
in the processes, are classified as chemical compounds.
Processes of detwinning crystals are classified in the
crystallizing subclasses. Method of preventing decomposition
of crystals by enclosing the crystals in an environment rich
in the decomposition products so that the equilibrium
tendency is against decomposition (as when an ammonium salt
is surrounded with ammonia gas) are classified with the
crystals. Also see subclass 273 for seed crystals combined
with supports, which combination is classified as
crystallizing apparatus.
29, Metal Working, subclass 25.35 for methods of and
apparatus for manufacturing piezoelectric devices.
117, Single-Crystal, Oriented-Crystal, and Epitaxy Growth
Processes; Non-Coating Apparatus Therefor, for processes and
non-coating apparatus (including seed crystal combined with
support) for growing thereindefined single-crystal of all
types of materials, including inorganic or organic. The
products of these processes, and the seed crystals used in
the processes, are classified as chemical compounds.
Processes of detwinning crystals are classified in the
crystallizing subclasses. Method of preventing decomposition
of crystals by enclosing the crystals in an environment rich
in the decomposition products so that the equilibrium
tendency is against decomposition (as when an ammonium salt
is surrounded with ammonia gas) are classified with the
crystals. Apparatus for detwinning crystals are classified
with the crystallizing apparatus as appropriate; for example,
Class 117, 200 for non-coating apparatus which forms a
therein-defined single-crystal.
118, Coating Apparatus, generally provides for coating
apparatus, including single-crystal (e.g., epitaxy) coating
means, especially 400, 500+, or 715+.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
subclass 17 for treating piezoelectric materials with an
etching composition.
260, Chemistry of Carbon Compounds, appropriate subclasses,
for processes of crystallizing organic compounds, the process
being classified with its product. The products of these
processes, and also the seed crystals used in the process,
are classified as chemical compounds. Organic compounds, per
se, are classified in Class 260, even though claimed or
disclosed as being piezoelectric, when the compound is not
claimed as being shaped with respect to the piezoelectric
property and where it is uncombined with piezoelectric
structure.
310, Electrical Generator or Motor Structure, 311 (e.g.,
357+) for piezoelectric organic or inorganic compositions of
particular shape where there is a disclosure that the shape
is significant to the piezoelectric property; subclass
323.11, for a piezoelectric element forming a resonant
structure used in a traveling wave motor constructed of a
specific substance or compound.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, 129 where a
chemical reaction means is provided and subclasses 245.1+
where a physical reaction means is provided. See Class 422,
subclasses 129+ or 245.1+ for crystallizing apparatus not
provided for elsewhere.
423, Chemistry of Inorganic Compounds, for inorganic
compounds, per se, even though disclosed or claimed as being
piezoelectric, where the compound is not claimed as being
shaped with respect to the piezoelectric property and where
it is not combined with piezoelectric structure.
501, Compositions: Ceramic, appropriate subclasses for
ceramic compositions and ceramic dielectrics, such as those
containing titanate compounds, glass, procelain, or steatite.
A disclosure of or claim to piezoelectric properties results
in classification in this subclass without a cross-reference
to Class 501.
562, Organic Compounds, subclass 580 for processes of
crystallizing Rochelle salt.
Subclass:
67
This subclass is indented under the class definition.
Compositions specialized and designed for, or peculiar to,
use in producing refrigeration, or heat or energy exchange,
by operations that include vaporization, or expansion or
compression, of a substance or of materials containing the
same.
(1) Note. This subclass provides, inter alia, for (1)
claiming admixtures of ingredients, or claims to an old
compound limited to use as a heat exchange agent, (2)
processes of heat exchange comprising known heat exchange
steps broadly recited and distinguished solely by the
composition or compound used, and (3) apparatus with the
composition or compound therein, where characteristics of
apparatus structure are not claimed. The preceding are
placed in this class even though freezing or boiling points
or temparatures of use are specified.
SEE OR SEARCH CLASS:
165, Heat Exchange, 104.11 for a heat exchange device with
an intermediate fluent material receiving and discharging
heat.
Subclass:
68
This subclass is indented under subclass 67. Compositions
which contain agents for lubrication, inhibiting corrosion or
chemical decomposition, indicating or inhibiting leakage, or
an auxiliary substance for persisting as a gas, without
liquefaction, solution, or absorption thereof in any
significant amount.
SEE OR SEARCH THIS CLASS, SUBCLASS:
408 for warning agents.
SEE OR SEARCH CLASS:
48, Gas: Heating and Illuminating, subclass 195 for
charging a combustible gas with warning agents.
106, Compositions: Coating or Plastic, subclass 33 for leak
stopping composition.
Subclass:
69
This subclass is indented under subclass 67. Compositions
which contain substances of relatively low volatility as
solvents or absorbents for gases or for substances of
relatively high volatility.
SEE OR SEARCH CLASS:
502, Catalyst, Solid Sorbent, or Support Therefor: Product or
Process of Making, for solid absorbents, per se, or processes
of making them.
Subclass:
70
This subclass is indented under the class definition.
Compositions specialized and designed for, or peculiar to,
use in preventing frost, thawing ice, maintaining
temperatures within narrow ranges, supplying or absorbing
heat, or producing low temperatures, by changes in phases
insubstances (e.g., solidification and liquefaction) or other
changes in substances other than mere temperature change, but
excluding combustion and irreversible chemical reactions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
67 for compositions for refrigeration by vaporization or
expansion, or processes of making such compositions.
SEE OR SEARCH CLASS:
44, Fuel and Related Compositions, for liquid or solid
compositions for producing heat by combustion, especially 250
for a composition which produces heat by a flameless or
glowless chemical reaction which is not readily reversible.
48, Gas: Heating and Illuminating, for gaseous fuels.
106, Compositions: Coating or Plastic, subclass 13 for
coating or plastic composition for preventing fog, frost or
ice on a surface.
126, Stoves and Furnaces, 263.01 for chemical heaters.
138, Pipes and Tubular Conduits, subclass 34 for pipes with
means to introduce an antifreeze substance.
523, Synthetic Resins or Natural Rubbers, appropriate
subclasses, particularly subclass 169 for a composition
containing a synthetic resin or natural rubbers having
utility to preserve visibility through a windshield or other
optical device by preventing the buildup of fog or rendering
the surface hydrophobic thereby causing the surface to repel
water or to processes of preparing said composition.
Subclass:
71
This subclass is indented under the class definition.
Compositions specialized and designed for, or peculiar to,
use in heat exchanges or which are low-freezing or
high-boiling, or which are adapted to form mixtures having a
lower pour-point or freezing point when mixed with other
substances.
(1) Note. Elements other than C and H and compounds which
contain such other elements are not considered to be
significant in this class, when they originate in and form a
part of petroleum or fractions thereof, unless such elements
or compounds are recited separately in the claims.
(2) Note. This subclass provides, inter alia, for (1)
claiming admixtures of ingredients, or claims to an old
compound limited to use as a heat exchange agent, (2)
processes of heat exchange comprising known heat exchange
steps broadly recited and distinguished solely by the
composition or compound used, and (3) apparatus with the
composition or compound therein, where characteristics of
apparatus structure are not claimed. The preceding are
placed in this class even though freezing or boiling points
or temparatures of use are specified.
SEE OR SEARCH THIS CLASS, SUBCLASS:
67 for fluids for use in expansible-fluid engines.
70 for low temperature eutectic compositions.
570 for fluent dielectric Compositions ("insulating oils")
which contain a hydrocarbon and a nonhydrocarbon.
SEE OR SEARCH CLASS:
122, Liquid Heaters and Vaporizers, for processes of heating
liquids, etc., which may involve the use of compositions
classified in this subclass (71) and its indents.
148, Metal Treatment, 27 for metal treating compositions
having a heat-transfer function.
165, Heat Exchange, 104.11 for a heat exchange device with
an intermediate fluent material receiving and discharging
heat.
203, Distillation: Processes, Separatory, for processes of
heating liquids, etc., which may involve the use of
compositions classified in this subclass and its indents.
208, Mineral Oils: Processes and Products, for processes of
heating liquids, etc., which may involve the use of
compositions classified in this subclass and its indents.
508, Solid Antifriction Devices, Materials Therefor,
Lubricant and Separant Compositions for Moving Solid
Surfaces, and Miscellaneous Mineral Oil Compositions, for
compositions similar to those of this subclass when such
compositions are specialized for use as lubricants.
Subclass:
72
This subclass is indented under subclass 71. Compositions
which contain agents for stopping or reducing leaks in
containers.
SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, subclass 33 for leak
stopping compositions, per se.
Subclass:
73
This subclass is indented under subclass 71. Compositions
which contain organic compounds.
Subclass:
74
This subclass is indented under subclass 73. Compositions
which contain metals, compounds thereof, inorganic compounds,
or elements, other than water.
Subclass:
75
This subclass is indented under subclass 74. Compositions
which contain organic compounds which contain nonmetallic
elements other than carbon, hydrogen and oxygen.
Subclass:
76
This subclass is indented under subclass 74. Compositions
which contain organic compounds which contain a carboxyl
radical (--COO--).
Subclass:
77
This subclass is indented under subclass 73. Compositions
which contain organic compounds which contain nonmetallic
elements other than carbon, hydrogen and oxygen.
Subclass:
78.1
This subclass is indented under subclass 77. Compositions
containing organic compounds which have nonmetallic elements
other than carbon, hydrogen, oxygen and nitrogen.
Subclass:
78.3
This subclass is indented under subclass 78.1. Compositions
in which the organic compounds contain silicon.
Subclass:
78.5
This subclass is indented under subclass 78.1. Compositions
in which the organic compounds contain phosphorus.
Subclass:
79
This subclass is indented under subclass 73. Compositions
which contain organic compounds which contain a carboxyl
radical (--COO--).
Subclass:
79.1
Compositions specialized and designed for the treatment of
mineral substances (including metal) by surface removal with
chemical agents.
(1) Note. This and indented subclasses also provide for
patents which in addition to a composition claim also contain
a claim to a nominal process of treating material therewith
(e.g., etching, contacting, etc.) even though the composition
of the material treated is recited.
(2) Note. Compositions for "bright polishing" involving the
production of a shiny, mirror-like or specular finish on
metals are considered to involve surface removal for this and
indented subclasses.
SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers, for compositions used in
dyeing fabrics for the chemical modification of the fiber or
fabric to produce ornamental effects.
134, Cleaning and Liquid Contact With Solids, subclass 2, 27,
28, 41, and 42 for processes for cleaning or pickling metals
using an acid or alkali.
148, Metal Treatment, 6 for forming of a coating on a metal
surface by chemical reaction.
166, Wells, subclass 307 and the subclasses there noted for
well treating methods which include materials which etch the
formation.
205, Electrolysis: Processes, Compositions Used Therein, and
Methods of Preparing the Compositions, 210, 221, and 223 for
etching processes combined with electrolytic coating and
subclasses 640+ and 687+ for electrolytic etching processes
without formation of an electrolytic coating.
216, Etching a Substrate: Processes, for etching processes.
Any detail of a treating step, e.g., dipping, spraying, etc.,
is sufficient to render an etching process more than nominal,
and to place the patent in Class 216.
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, for compositions used to clean a solid surface
by removal of foreign matter and not involving the removal of
the surface, per se, especially 245 for bare metal surface
cleaning compositions.
Subclass:
79.2
This subclass is indented under subclass 79.1. Compositions
containing an inorganic acid.
Subclass:
79.3
This subclass is indented under subclass 79.2. Compositions
which contain a fluorine compound.
(1) Note. The fluorine compound may be the acid or a
different compound in addition to the acid.
Subclass:
79.4
This subclass is indented under subclass 79.2. Compositions
which contain an organic material in addition to the acid.
Subclass:
79.5
This subclass is indented under subclass 79.1. Compositions
which contain an alkali metal hydroxide.
(1) Note. The hydroxide may be the etching or brightening
compound or may be used in addition thereto.
Subclass:
88.1
DUST SUPPRESSANTS FOR BULK MATERIALS, OR PROCESSES OF
PREPARING (E.G., FOR CONSOLIDATING DUST IN COAL MINES,
CONTROLLING SOIL EROSION, ETC.):
This subclass is indented under the class definition.
Compositions specialized or designed for suppressing dust
(e.g., by binding, consolidating, etc.) from materials stored
in large bulk, usually in open outdoor spaces, or processes
of preparing the compositions.
(1) Note. Processes involving the mere use of a claimed
composition are included in this subclass. If no composition
is claimed or significant process steps are involved in
addition to such mere use, the patent is classifiable in
other appropriate classes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
88.2 for compositions intended to be applied to a substrate
for collecting fine particles.
SEE OR SEARCH CLASS:
299, Mining or In Situ Disintegration of Hard Material,
subclass 12 for processes of assuring mine safety.
404, Road Structure, Process, or Apparatus, subclass 76 for
processes of dust fixation or soil stabilization.
Subclass:
88.2
COMPOSITIONS FOR COATING OR IMPREGNATING A SUBSTRATE USED FOR
COLLECTING FINE PARTICLES BY ADHERENCE, OR PROCESSES OF
PREPARING (E.G., FOR IMPREGNATING DUSTING CLOTHS, DUST
FILTERS, ETC.):
This subclass is indented under the class definition.
Compositions specialized or designed for collection of fine
particles, such as dust, by adherence to a substrate coated
or impregnated with the composition, such as furnace filters,
or processes of preparing the compositions.
(1) Note. Processes involving the mere use of a claimed
composition are included in this subclass. If no composition
is claimed or significant process steps are involved in
addition to such mere use, the patent is classifiable in
other appropriate classes.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, for dust
cloths.
95, Gas Separation: Processes, particularly 273 for
processes of separating solid particles from gas which may
include use of a particle adherent composition.
149, Explosive and Thermic Compositions or Charges, subclass
108.4 for waste containing explosives and methods of
removing their residues.
Subclass:
175
This subclass is indented under the class definition.
Compositions specialized and designed for, or peculiar to,
use in treating water to soften or purify it, to precipitate
impurities in it, or to inhibit formation of scale or
incrustation in steam boilers or other water containers, or
processes of making such compositions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
387 for corrosion inhibiting agents.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 660 for processes of
separation involving ion exchange or sorption, and subclasses
702+ for separating processes involving precipitation.
423, Chemistry of Inorganic Compounds, 324 for inorganic
silicates.
424, Drug, Bio-Affecting and Body Treating Compositions,
appropriate subclass for a biocidal composition which is
intended to sterilize water.
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, 247 for water scale removing compositions.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 113 for compositions for or subcombination
compositions for or breaking of or inhibiting of colloid
systems (e.g., foam breaking, emulsion breaking, dispersion
inhibiting, suspension settling, gel breaking, smoke
suppressing, coagulating, flocculating), when generically
claimed or when there is no hierarchically superior provision
in the USPC for the specifically claimed art.
Subclass:
176
This subclass is indented under subclass 175. Compositions
in the form of packages or which contain, in each case, a
particular heterogeneous arrangement of two or more
components, other than mixed granules, which differ from each
other chemically or physically.
Subclass:
178
This subclass is indented under subclass 175. Compositions
which contain deoxidants or free metals.
SEE OR SEARCH CLASS:
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, subclass 248 for descaling agents including a
free element component (e.g., metal).
Subclass:
179
This subclass is indented under subclass 175. Compositions
which contain substantially water-insoluble materials which
are adapted to bind or take up bases or cations in exchange
for other bases or cations.
SEE OR SEARCH THIS CLASS, SUBCLASS:
193 for compositions for chemically binding ammonia, alkali
or other bases.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 660 for processes of
separation involving ion exchange or sorption.
423, Chemistry of Inorganic Compounds, 700 for zeolites and
appropriate subclasses for aluminosilicate compounds having
base-exchange capabilities.
Subclass:
180
This subclass is indented under subclass 175. Compositions
which contain plants, plant parts or extracts, or organic
compounds.
Subclass:
181
This subclass is indented under subclass 180. Compositions
which contain inorganic compounds or elements other than
alkali metal hydroxides, alkali metal carbonates and water.
Subclass:
181.1
This subclass is indented under the class definition.
Compositions which are (1) designed for use as a getter for
an electric lamp, an electric space discharge device, or
other container which is either evacuated or contains a
confined atmosphere of gas or vapor, and (2) designed for use
in generating a gas or vapor within the container of an
electric lamp, and electric space discharge device or similar
container.
(1) Note. Getters are materials which, when used in closed
containers, reduce the gas or vapor content of the container.
A getter may react with the gas or vapor in the container to
form a solid nonvaporizable material, or to adsorb or absorb
the gas or vapor, or may reduce the amount of the gas or
vapor in the container in any other way. The material may be
a getter for one gas or vapor and may not have any effect
upon another gas or vapor.
(2) Note. These subclasses provide for all materials which
are limited by the claims to use as a getter. Where the
patent claims a material broadly as well as claiming a getter
made of the material, the patent will be classified with the
appropriate material where the material is classified in a
class other than Class 252 and cross-referenced here. These
subclasses provide for all materials broadly or specifically
claimed which are not otherwise classified which are
disclosed for use as getters.
(3) Note. These subclasses provide for patents which claim
merely a container or device which contains a particular
getter material where no structure of the container or device
is set forth. Where the device is claimed by name only, as an
electric lamp, or where details of the device are claimed,
the patent is classified with the device.
(4) Note. Where the patent claims a process of gettering
and also contains claims to the gettering material, the
patent is classified with the art which provides for the
process and is cross-referenced to these subclasses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
4 for compositions for use in extinguishing fires which
contain components for generating gas by chemical reactions.
182 for compositions for use as agents or materials for
absorbing or binding extraneous compounds or elements, or for
use in causing or carrying out other changes by chemical
reactions.
194 for compositions for use in absorbing, binding, removing
or retaining water.
364 for compositions for use as solvents, including such
compositions as are solvents for gases.
372 for compositions which are gaseous, and the processes of
making them.
500 for materials for filaments, electrodes and shields for
electric lamps and electric space discharge devices. Such a
material when also adapted to act as getter or a gas or vapor
generating material is classified in subclasses 181.1+, and
cross-referenced into subclasses 500+.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, 228 for a composition having a
continuous phase of free metal made by consolidating metal
particles, and subclasses 255+ for a loose metal particle
composition.
95, Gas Separation: Processes, for processes involving steps
resulting in separation of a gas from a fluid mixture
comprising (a) a gas and solid or liquid particles entrained
therein, (b) a liquid and gas entrained therein, or (c) a
plurality of gases. See particularly 90 for processes of
gas separation using a solid sorbent.
96, Gas Separation: Apparatus, for apparatus used in
separation of a gas from a fluid mixture comprising (a) a gas
and solid or liquid particles entrained therein, (b) a liquid
and gas entrained therein, or (c) a plurality of gases. See
particularly 108 for solid sorbent apparatus for gas
separation.
313, Electric Lamp and Discharge Devices, 545, 546, and 547
for electric lamps and electric space discharge devices which
are provided with a getter or gas or vapor generating
material within the envelope of the device.
417, Pumps, 48 for electrical or getter type devices, which
are more than merely the material, including significant
claimed containers holding getter material for disposition in
a chamber to be evacuated.
423, Chemistry of Inorganic Compounds, 210 for purifying or
separating gaseous components by a chemical reaction.
428, Stock Material or Miscellaneous Articles, 546 for
metallic stock comprising metal particles.
445, Electric Lamp or Space Discharge Component or Device
Manufacturing, particularly subclass 41 for gettering
processes.
502, Catalyst, Solid Sorbent, or Support Therefor: Product
or Process of Making, for a composition comprising a catalyst
or support therefor or sorbent of general utility.
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, for cleaning compositions of general or
specific utility, particularly 367 for those compositions
which are adapted to bleach or oxidize by chemical reaction.
Subclass:
181.2
This subclass is indented under subclass 181.1. Materials
which contain either (1) a plurality of getter substances,
(2) a plurality of materials capable of generating two or
more different gases or vapors, or (3) a material capable of
generating a gas or vapor and a different material capable of
acting as a getter.
(2) Note. As many getter and gas or vapor generating
materials contain two or more ingredients, classification in
this subclass depends principally upon the disclosure of the
patent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
181.1 for the case where there is only a single gas or vapor
generated and such gas or vapor is capable of acting as a
getter as well as being capable of supplying a gas or vapor.
Subclass:
181.3
This subclass is indented under subclass 181.1. Materials
which contain a plurality of substances not in chemical
combination with each other, at least two of the substances
being capable of chemically reacting with each other to
produce the getter or gas or vapor generating material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
182 for compositions for use as agents or materials in
causing or carrying out changes by chemical reactions.
Subclass:
181.4
This subclass is indented under subclass 181.3. Materials
which contain magnesium, an alkali metal or an alkaline earth
metal, or a compound thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
181.7 for other materials under subclass 181.1 which contain
magnesium, an alkali metal, an alkaline earth metal or a
compound thereof.
Subclass:
181.5
This subclass is indented under subclass 181.1. Getters
where the getter material is normally gaseous.
(1) Note. This subclass does not include materials which
are rendered gaseous or vaporous by treating a substance
which is normally nongaseous or vaporous.
SEE OR SEARCH THIS CLASS, SUBCLASS:
372 for gaseous compositions.
Subclass:
181.6
This subclass is indented under subclass 181.1. Materials
which contain a metal or metal compound.
SEE OR SEARCH THIS CLASS, SUBCLASS:
181.1 see (2) Note, for the line between this subclass and
the classes which provide for metals, alloys, and metal
compounds.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, appropriate subclasses for
processes of making metals, and 228 for consolidated and
255+ for loose metal particle compositions.
420, Alloys or Metallic Compositions, appropriate subclasses
for alloys or metallic compositions, per se.
423, Chemistry of Inorganic Compounds, appropriate subclasses
for metal containing inorganic compounds, per se.
556, Organic Compounds, appropriate subclasses for carbon
compounds which contain a metal, see 1 where the compound
contains a heavy metal and subclasses 170+ where the compound
contains aluminum.
Subclass:
181.7
This subclass is indented under subclass 181.6. Materials
which contain magnesium, an alkali metal, an alkaline earth
metal, or a compound thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
181.4 for this subject material where the getter or gas or
vapor material is generated from a reactive composition.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, 255 for loose mixtures of metal
or alloy powder.
420, Alloys or Metallic Compositions, appropriate subclasses
for a single alloy or metallic composition in the form of a
powder.
Subclass:
182.1
This subclass is indented under the class definition.
Compositions which are chemically reactive and have utility
in electro-chemical cell, e.g., battery, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
425.3 for process of making a catalytic electrode.
SEE OR SEARCH CLASS:
429, Chemistry: Electrical Current Producing Apparatus,
Product and Process, appropriate subclasses for materials of
this subclass combined with battery structure, e.g.,
electrolyte, electrode, etc.
Subclass:
182.11
COMPOSITIONS CONTAINING A SINGLE CHEMICAL REACTANT OR PLURAL
NONINTERACTIVE CHEMICAL REACTANTS; I.E., NOT VIS-A-VIS:
This subclass is indented under the class definition.
Composition s containing a single reactant or plural
reactants under the class definition specialized or designed
for use in subsequent reactions with other materials, but not
with each other.
(1) Note. The addition of a material which serves a dual
purpose, i.e., reactant plus diluent, solvent, plasticizer,
etc., will be classified as a reactant; if the patent is
silent as to its function than it will be classified as a
nonreactive material.
(2) Note. The relationship between a subclass and subclasses
indented thereunder is such that reference is always to the
same reactant, unless the indented subclass begins with "With
or Contains" in which case they may refer to any reactant.
(3) Note. A composition containing a reactant metal,
element or compound stabilized with a specified material, or
a process of making such a composition, is nonetheless
classified accordingly with the metal, element or compound
classes.
(4) Note. Whenever possible, full recognition should be
given to the term "catalyst" in describing a given substance
even though from prior art the substance is known to behave
as a reactant. Thus, triethanolamine can react with
polyisocyanates to form polyurethanes; however, if it stated
that triethanolamine functions as a catalyst in aiding the
condensation of polyols with polyisocyanate, then it is
classified in the catalyst class and not as a reactant.
Similarly, a composition specified to function as an
accelerating agent will be classified in the catalyst class.
Vulcanizing a curing compositions are considered proper
herein unless it is clear that their function is strictly
catalytic. Peroxide compositions, per se, will be considered
as catalysts, and therefore, proper for the catalyst class.
(5) Note. To be classified in this or the indented
subclasses a patent must not recite a claim drawn to a
composition containing a solid synthetic polymer. Where a
patent sets forth claims which are drawn to species that may
or may not be synthetic polymers as per disclosure, or where
a patent contains only generic claims and the disclosure, or
where a patent contains only generic claims and the
disclosure sets forth species which are appropriate as
synthetic polymers and species which are appropriate as
synthetic polymers and species which are not, the patent is
placed here as an original with the species which are
appropriate as synthetic polymers and species which are
nonresinous and cross-referenced to the appropriate polymer
classes. Polymers are limited to synthetic organic polymers
and excludes inorganic polymer, natural polymers, e.g.,
starch, cellulose, collegen, wool, etc.
(6) Note. A composition which contains (1) potentially
reactable ingredients to be polymerized and (2) all or the
necessary reactants to form a desired synthetic resin or (3)
those reactants which are potentially reactable at room
temperature or that require merely heat and/or pressure or
moisture when reactant contains Si-C, Si-H, -N=C=X, (X is
chalcogen) or is a liquid polysulfide is classified in
appropriate polymer classes.
(7) Note. See Lines With Other Classes and Within This
Class, in the main class definition of this class (252) for a
hierarchical listing of composition classes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
2 for gas generating compositions for extinguishing fires.
60 for gas generating compositions specialized for use in
forthfloation separation processes.
181.1 for getter and gas or vapor generating compositions
for electric lamps, electric space discharge devices and
other evacuated or gas or vapor filled containers.
183.11 for the additon of a stabilizer or inhibitor to a
composition to prevent the interaction between two or more
reactants, such that the reactants can interact on removal of
the stablizer or inhibitor.
SEE OR SEARCH CLASS:
149, Explosive and Thermic Compositions or Charges,
appropriate subclasses for gas generating compositions which
undergo a chemical change at a very rapid rate, or rate
approaching instantaneous reaction, resulting in the
production of usable force as in blasting, fire arms, jet
propulsion, filling automotive passenger gas-bags, etc.
502, Catalyst, Solid Sorbent, or Support Therefor: Product or
Process of Making, for catalysts and reaction accelerating
agents, per se.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art; including those instances when a composition would
otherwise be proper for this subclass (182.11) and its
indented subclasses.
521, Synthetic Resins or Natural Rubbers, 50 for
compositions containing all the required reactants or polymer
derived thereof plus a foam generating composition (blowing
agent).
Subclass:
182.12
Organic reactant:
This subclass is indented under subclass 182.11. Subject
matter wherein the composition contains a single reactant or
plural noninteractive chemical reactants at least one of
which is organic in nature.
(1) Note. The term organic denotes the reactant as one
which has carbon therein the which is further characterized
by the presence of (a) a C-C bond, or (b) C-H bond, or (c)
(C-halogen bond, or (d) C-N or C=N bond, with the proviso
that hydrocyanic acid, cyanogen, isocyanic acid, cyanamide,
cyanogen halide, isothiocyanic acid, and metal carbides are
excluded as being organic in nature.
Subclass:
182.13
For subsequent solid polymer treatment or preparation; e.g.,
crosslinking, grafting, curing, hardening, vulcanizing,
etc.:
This subclass is indented under subclass 182.12. Subject
matter designed for subsequent use in polymerization
processes and other polymer treating processes, e.g.,
crosslinking, grafting, blocking, curing, hardening,
vulcanizing, etc.
(1) Note. The term "subsequent" means that the claimed
composition will be used in one of the above stated processes
directly, immediately or in the very near future, and not
remotely. Thus, for example, a composition which contains a
glycol which is to be subsequently transformed into a liquid
polyester is not classified in this subclass. The subsequent
esterification will not lead to a solid polymer but merely
the preparation of a compound by definition. So, too, a
composition designed for subsequent preparation of cyclic
trimmers for tetrameres, etc, which, by disclosure are
compounds, are also excluded from this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
182.12 for a composition containing a glycol which is to be
subsequenly transformed into a liquid polyester.
Subclass:
182.14
Reactant contains element other than C, H, O, or N:
This subclass is indented under subclass 182.13. Subject
matter wherein a reactant contains an element other than C,
H, O, or N, e.g., an isocyanate compound containing silicon,
or a phosphorous-containing polyol both used for preparing
polyurethanes, etc.
Subclass:
182.15
Halogen:
This subclass is indented under subclass 182.14. Subject
matter wherein the organic halogen compound contains bromine
or iodine.
Subclass:
182.16
Bromine or iodine:
This subclass is indented under subclass 182.15. Subject
matter wherein the organic halogen compound contains bromine
or iodine.
Subclass:
182.17
Sulfur:
This subclass is indented under subclass 182.14. Subject
matter wherein the organic compound contains sulfur.
Subclass:
182.18
Reactant contains ethylenic group:
This subclass is indented under subclass 182.13. Subject
matter wherein the reactant contains an ethylenic group,
e.g., methyl methacrylate, acrylic acid, etc.
Subclass:
182.19
Cyclic anhydride moiety:
This subclass is indented under subclass 182.18. Subject
matter wherein the organic reactant containing an ethylenic
groups also contains an anhydride moiety, e.g., maleic
anhydride, etc.
Subclass:
182.2
Reactant contains isocyanate (-N=C=O) or blocked isocyanate
group:
This subclass is indented under subclass 182.13. Subject
matter wherein the organic reactant contains an isocyanate
(-N=C=O) or blocked isocyanate (-NHC(=O)-OR) group.
(1) Note. A blocked isocyanate is an isocyanate which has
been rendered inert by conversion to an inactive group
usually in the form of a urethane (-N-C(=O)-OR) group.
Subclass:
182.21
Two or more reactants containing isocyanate or blocked
isocyanate groups:
This subclass is indented under subclass 182.2. Subject
matter wherein the composition contains two or more reactants
which contain isocyanate or blocked isocyanate groups; e.g.,
an isomeric mixture of 2, 2'-, 2, 4'- and/or 4, 4'-
diisocyanate diphenylmethane, etc.
Subclass:
182.22
Urethane (-N-C(=O)-O-C-) group:
This subclass is indented under subclass 182.21. Subject
matter wherein the isocyanate compound in addition contains
either a blocked isocyanate or urethane group.
(1) Note. Found here typically is a polyisocyanate treated
with a polyol yielding an isocyanate terminated
polyurethane.
Subclass:
182.23
Reactant contains oxygen:
This subclass is indented under subclass 182.13. Subject
matter wherein the organic reactant contains oxygen.
Subclass:
182.24
Reactant contains plural hydroxyl groups:
This subclass is indented under subclass 182.23. Subject
matter wherein the organic reactant contains plural hydroxyl
groups, e.g., ethylene glycol, glycerine, sucrose, starch,
etc.
Subclass:
182.25
Three or more reactants containing plural hydroxyl groups:
This subclass is indented under subclass 182.23. Subject
matter where three or more organic reactants contain plural
hydroxyl groups.
Subclass:
182.26
Reactant contains nitrogen:
This subclass is indented under subclass 182.24. Subject
matter wherein the organic reactant contains nitrogen, e.g.,
triethanolamine, etc.
Subclass:
182.27
Reactant contains ether linkage:
This subclass is indented under subclass 182.14. Subject
matter wherein the organic reactant additionally contains an
ether linkage, e.g., polyethylene glycol, etc.
Subclass:
182.28
Reactant contains carboxylic acid group or derivative
thereof:
This subclass is indented under subclass 182.23. Subject
matter wherein the oxygen containing organic reactant is a
carboxylic acid or derivative thereof.
(1) Note. A carboxylic acid derivative denotes: nitrile,
ester, anhydride, salt, amide, imide, lactam, lactone, and
acyl halide. The metal salt and acyl halide are not
classified herein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
182.14 for the metal salt and acyl halide.
Subclass:
182.29
With stabilizer or inhibitor:
This subclass is indented under subclass 182.12. Subject
matter wherein the composition contains material whose sole
function is to impart stability to one or more compounds for
the purpose of delaying or retarding a chemical change in one
or more of these compounds, until such time when one or more
of these compounds may under so a subsequent reaction.
(1) Note. This stabilization or inhibition process may
occur in any number of ways too numerous, if not impossible
to elaborate here. However, some processes may be: coating,
encapsulation, impregnation, complexation, or other altered
chemicals forms, e.g., salting, hydrogen, bonding,
tautomerizing, clathration, etc. It is imperative to point
out that the stabilization or inhibition is related to only a
chemical change and not to any physical change. Thus, a
surfactant added to a composition to form a stable emulsion
of a given reactant is not classified in this subclass,
whereas the stabilization of a solution of a reactant wherein
said reactant is unstable in the presence of the solvent is
properly classified here, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
380 for stabilizing or inhibiting compositions.
186.24 for the addition of (1) a metal salt to stablize
H[subscrpt]2[end subscrpt]O[subscrpt]2[end subscrpt] against
decomposition and (2) a third substance e.g. a dye to
indicate possible peroxide decomposition by way of a color
change.
SEE OR SEARCH CLASS:
260, Chemistry of Carbon Compounds, main class definitions,
fourth full paragraph for a similar discussion as related to
organic compounds.
423, Chemistry of Inorganic Compounds, subclass 265 for a
detailed discussion on the use of additives to an inorganic
compound wherein the resultant composition is properly
classified herein. For example, the addition of a metal salt
to stabilize hydrogen peroxide against decomposition would be
classified in Class 423, subclass 273.
Subclass:
182.3
Reactant contains phosphorous, silicon, or sulfur atom, or
contains metal-to-carbon bond:
This subclass is indented under subclass 182.11. Subject
matter wherein the organic reactant contains a phosphorous,
silicon or sulfur atom or contains a metal-to carbon bond,
e.g., mixture of phosphite compounds to scavenge aldehydes
and ketones, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
2 for gas generating compositions for extinguishing fires.
60 for generating compositions specialized for use in
frothfloatation separation processes.
181.1 for getter and gas or vapor generating composition for
electric lamps, electric space discharge devices and other
evacuated or gas or vapor filled containers.
SEE OR SEARCH CLASS:
149, Explosive and Thermic Compositions or Changes,
appropriate subclasses for gas generating composition which
under go a chemical change at a very rapid rate, or a rate
approaching instantaneous reaction, resulting in the
production of usable force as in blasting, fire arms, jet
propulsion, filling automotive passenger restraining
gas-bags, etc.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art; including those instances when a composition would
otherwise be proper for this subclass (182.11) and its
indented subclasses.
521, Synthetic Resins or Natural Rubbers, 50 for
compositions containing all the required reactant or polymer
derived thereof plus foam generating composition (blowing
agent).
Subclass:
182.31
Reactant contains phenolic, phenolic ether, or inorganic
phenolate group:
This subclass is indented under subclass 182.12. Subject
matter wherein the organic reactant is a phenolic, phenolic
ether or inorganic phenolate compound, e.g., phenol,
bisphenol A, the diglycidyl ether or bisphenol A, sodium
pentachlorophenolate, etc.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, the Class
Definition glossary for a detailed definition of a phenol,
phenol ether and inorganic phenolate; this is encompassed
under the heading "phenolic reactant."
Subclass:
182.32
Inorganic reactant other than sulfur containing:
This subclass is indented under subclass 182.11. Subject
matter wherein the composition contains an inorganic reactant
other than sulfur, e.g., a solution of silicon tetrafluoride
in tetrahydrofuran, liquid hydrogen fluoride dimethyl
sulfoxide, etc.
Subclass:
182.33
Reactant contains heavy metal:
This subclass is indented under subclass 182.32. Subject
matter wherein the inorganic reactant contains a heavy metal,
e.g., titanium, vanadium, iron, manganese, etc.
Subclass:
182.34
Reactant contains nitrogen:
This subclass is indented under subclass 182.32. Subject
matter wherein the inorganic reactant contains nitrogen,
e.g., ammonium hydroxide sodium nitrate, etc.
Subclass:
182.35
Reactant contains aluminum or phosphorous:
This subclass is indented under subclass 182.32. Subject
matter wherein the inorganic reactant contains aluminum or
phosphorus, e.g., phosphoric acid, aluminum hydroxide, etc.
Subclass:
183.11
CHEMICALLY INTERACTIVE REACTANTS (VIS-A-VIS):
This subclass is indented under the class definition.
Compositions which contains a mixture or association of two
or more reactants chosen for subsequent and not immediate
chemical interaction thereof, i.e., vis-a-vis, substances
peculiar thereto, and processes of making the same.
(1) Note. This subclass provides for the addition of a
stabilizer or inhibitor to a composition to prevent the
interaction between two or more reactants such that the
reactants con interact subsequently upon removal or
interruption of the stabilizer or inhibitor or otherwise
render them reactive.
(2) Note. This subclass does not take solid synthetic
polymers as part of a composition.
(3) Note. A composition containing potentially reactable
ingredients which are to be polymerized and which contains
all of the necessary reactants to form the desired solid
synthetic resin; or contains those reactants which are
potentially reactable at room temperature or requiring merely
the addition of heat, pressure, or moisture when said
reactants contain a Si-C, Si-H bond or -N=C=X group (wherein
x is a chalcogen atom); or contains a liquid polysulfide is
classified in appropriate polymer classes.
SEE OR SEARCH CLASS:
428, Stock Material or Miscellaneous Articles, 402, for solid
polymer reactants A and B microencapsulated within a given
microcapsule or a sphere or specified dimensions, and wherein
the two are stabilized for subsequent reaction.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art; including those instances when a composition would
otherwise be proper for this subclass (183.11) and its
indented subclasses.
520, Synthetic Resins or Natural Rubbers, appropriate
subclasses for a composition containing a solid polymer
admixed with a reactant, which may be an additional solid
polymer.
Subclass:
183.12
With stabilizer or inhibitor:
This subclass is indented under subclass 183.11. Subject
matter wherein the composition contains a material whose sole
function is to impart stability or inhabitation to one or
more components in order to delay or retard a chemical
reaction from occurring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
182.29 for a more detailed discussion or this subject
matter.
Subclass:
183.13
Organic reactant admixed with inorganic reactant:
This subclass is indented under subclass 183.11. Subject
matter wherein composition contains both an organic reactant
and an inorganic reactant, e.g., tartaric acid and sodium
bicarbonate, desiccated alkali metal formate and dehydrated
aluminum sulphate, etc.
Subclass:
183.14
Inorganic reactants only:
This subclass is indented under subclass 183.11. Subject
matter wherein the composition contains only inorganic
reactants, e.g., a heat producing composition containing
magnesium sulfate and iron oxide, etc.
Subclass:
183.15
Calcium carbide precursors:
This subclass is indented under subclass 183.14. Subject
matter wherein the inorganic reactants are considered calcium
carbide precursors, i.e., which when reacted, will produce
calcium carbide, e.g., calcium oxide and coke, etc.
Subclass:
183.16
Contains carbonate or bicarbonate:
Subject matter under search class 183.14 wherein the
composition contains an inorganic carbonate or bicarbonate,
e.g., a buffering composition containing a mixture of
aluminum hydroxide and ammonium bicarbonate, etc.
Subclass:
184
(E.G, EXPLOSIVE DOOR HINGE, TOOL EXPLOSIVELY ACTUATED, BAND
RELEASE, EXPANSION OF TUBE, CABLE CUTTER, EXPLOSIVELY
OPERATED SPLITTING WEDGES)
This subclass is indented under subclass 182. Compositions
in each case specialized and designed for, or peculiar to,
use in both absorbing or binding an extraneous substance,
physically or chemically, and yielding by chemical reaction a
chemically-free third substance which does not contain the
substance which is absorbed or bound, or in making substances
for such use; such as ion exchange compositions.
SEE OR SEARCH CLASS:
521, Synthetic Resins or Natural Rubbers, subclasses 25-39
for synthetic ion exchange resins.
Subclass:
185
This subclass is indented under the class definition.
Compositions which contain substances which contain lead or a
lead compound for, or peculiar to, use in treating petroleum
to "sweeten" it, or eliminate therefrom or modify sulfur or
sulfur compounds therein, or chemically binding extraneous
sulfur or chemically modifying extraneous sulfur compounds,
or in making substances for such use.
SEE OR SEARCH CLASS:
208, Mineral Oils: Processes and Products, 197 for
processes of sweetening mineral oils using lead compounds.
Subclass:
186.1
OXIDATIVE BLEACHANT, OXIDANT CONTAINING, OR GENERATIVE:
This subclass is indented under the class definition.
Compositions which contain substances for, or peculiar to,
use in bleaching by oxidation, or in other oxidation of
extraneous substances, or in generating oxygen, or in making
substances for such use, or processes of making such
compositions or mere method of using such compositions.
(1) Note. A material qualifies as an oxidizing agent either
if it is so claimed, disclosed, or if it is generally art
recognized as such.
SEE OR SEARCH THIS CLASS, SUBCLASS:
184 for such compositions which are also chemically
yielding.
372 for gaseous compositions containing an oxidant.
SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers, 101 for processes of
bleaching or decoloring textiles and which are other than the
mere application of a novel oxidizing bleach composition.
149, Explosive and Thermic Compositions or Charges, subclass
1 and 119 for a collection of organic and inorganic
compounds having oxidative uses in compositions of that
class.
210, Liquid Purification or Separation, 749 for processes of
chemically treating a liquid for the purpose of purifying the
liquid using an oxidizing composition, e.g., a method to
reduce the bacteria count in water using sodium hypochlorite
would be classified in Classes 210, subclass 756.
260, Chemistry of Carbon Compounds, appropriate subclasses
for organic compounds, per se, which may be oxidative and
admixture of such compounds with agents designed to improve
the stability of such compounds.
423, Chemistry of Inorganic Compounds, 265 for an inorganic
compound, which may be oxidative, admixed with an agent
designed to improve the stability of such a compound.
424, Drug, Bio-Affecting and Body Treating Compositions,
subclass 62 for compositions under the class definition
which bleach or remove color from live skin or hair and which
are applied topically.
502, Catalyst, Solid Sorbent, or Support Therefor: Product or
Process of Making, for compositions containing an oxidant
claimed or solely disclosed as a catalyst.
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, especially 302 and 367+ for cleaning
compositions including an oxidant or chemical bleach
component.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 10 for foam colloid systems or agents for such
systems or making or stabilizing such systems or agents,
subclasses 31+ for colloid systems of colloid-sized solid or
semisolid phase dispersed in primarily organic continuous
liquid phase, subclasses 77+ for colloid systems of
colloid-sized solid phase dispersed in aqueous continuous
liquid phase; or agents for such systems or making or
stabilizing such systems or agents; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
520, Synthetic Resins or Natural Rubbers, appropriate
subclasses for treating a resin with an oxidizing agent or
generative.
Subclass:
186.2
Composition containing two or more solid materials with
defined physical dimensions; e.g., surface areas, volumes,
etc., or process of producing said composition:
This subclass is indented under subclass 186.1. Compositions
wherein two or more solid materials possess defined physical
dimensions or surface areas.
(1) Note. The solid materials may be reactants, polymeric
or nonpolymeric or nonreactant materials.
Subclass:
186.21
Plural oxidants:
This subclass is indented under subclass 186.1. Compositions
which contains two or more oxidizing agents, e.g., a
liquified mixture of chlorine and chlorine dioxide, sodium
chlorate and sodium peroxide, etc.
Subclass:
186.22
Contains plural peroxides:
This subclass is indented under subclass 186.21.
Compositions wherein at least two of the oxidants are
peroxides, e.g., ammonium persulfate and sodium peroxide,
etc.
Subclass:
186.23
Organic peroxide:
This subclass is indented under subclass 186.22.
Compositions wherein at least one of the peroxides is
organic, e.g., peracetic acid, ditertiary butyl peroxide,
etc.
Subclass:
186.24
Contains elemental material devoid of water:
This subclass is indented under subclass 186.1. Compositions
which contains an elemental material and which composition is
further devoid of water, e.g., graphite, charcoal, metal
alloys, oxygen, ozone, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
186.33 186.36 and 187.1+, for compositions containing
elemental material in admixture with water.
372 for gaseous compositions containing elemental gases,
e.g., hydrogen and carbon monoxide, hydrogen and nitrogen,
etc.
Subclass:
186.25
Composition containing a stabilizer or a product in the form
of a surface-modified, impregnated, encapsulated, or
surface-coated article; or process of producing said
composition:
This subclass is indented under subclass 186.1. Compositions
containing a stabilizer wherein the stabilizer is accompanied
by additional materials properly classifying the composition
herein, e.g., a composition comprised of an oxidant,
stabilizer, plasticizer and densifying agent, etc.; a
composition containing a product therein which is a surface
coated, impregnated, encapsulated, or surface modified
material, e.g., fiber, sheet, particle, or web, etc.
(1) Note. This subclass does not require that the product
admixed be in the same physical or chemical state after
achieving the final composition, e.g., the composition or
product, per se, may be comminuted, chemically treated,
transitory, etc.
SEE OR SEARCH CLASS:
149, Explosive and Thermic Compositions or Charges, subclass
3 for a coated component.
423, Chemistry of Inorganic Compounds, for a Class 423
product admixed with a stabilizer and the admixture is
neither disclosed nor claimed as having any utility.
428, Stock Material or Miscellaneous Articles, 221 for web
or sheet containing structurally defined element or
component; and subclasses 357+ for coated or structurally
defined flake, particle, cell, strand, strand-portion, rod,
filament, macroscopic fiber, or mass thereof.
520, Synthetic Resin or Natural Rubbers, appropriate
subclasses for a material impregnated, encapsulated, surface
modified or surface coated in a solid polymer.
Subclass:
186.26
Organic peroxide:
This subclass is indented under subclass 186.25.
Compositions which contains an organic peroxide, e.g., a
composition containing sodium peroxy carbonate coated with a
stabilizing quantity of fatty alkanol-amides, etc.
Subclass:
186.27
Inorganic peroxide:
This subclass is indented under subclass 186.25.
Compositions which contains an inorganic peroxide, e.g., a
stabilized composition containing sodium peroxide, magnesium
acetate, and alkali metal silicate, etc.
Subclass:
186.28
Contains hydrogen peroxide:
This subclass is indented under subclass 186.27.
Compositions wherein the inorganic peroxide is hydrogen
peroxide, e.g., a composition comprised of hydrogen peroxide
stabilized with sodium stannate and aluminum acetate, etc.
Subclass:
186.29
With organic material:
This subclass is indented under subclass 186.28. Composition
which contains an organic material, e.g., a composition
comprised of hydrogen peroxide admixed with a stabilizing
amount of 1-hydroxy ethylidene-1, 1-diphosphonic acid, etc.
(1) Note. The presence of the organic material need not be
attributed exclusively to either a stabilizing agent or a
material used to coat, impregnate, encapsulate, or surface
modify a particle, but may function in other capacities,
e.g., filler, plasticizer, solvent, etc.
Subclass:
186.3
Contains perborate:
This subclass is indented under subclass 186.27.
Compositions which contains inorganic perborate salts, e.g.,
a composition comprised of sodium perborate stabilized with
particle coating of sodium carbonate, etc.
Subclass:
186.31
With organic material:
This subclass is indented under subclass 186.3. Composition
which contains an organic material, e.g., a bleaching
composition comprised of sodium perborate and benzoic
anhydride coated onto expanded perlite particles, etc.
(1) Note. The presence of the organic material need not be
attributed exclusively to either a stabilizing agent or a
material used to coat, encapsulate, impregnate, or surface
modify a particle, but may function in other capacities,
e.g., a filler, plasticizer, solvent, etc.
Subclass:
186.32
Contains Group IA metal peroxide:
This subclass is indented under subclass 186.27. Composition
which contains a Group IA metal peroxide (Li, Na, K, Rb, Cs),
e.g., a composition comprised of sodium percarbonate coated
with aqueous sodium silicate solution, etc.
Subclass:
186.33
Contains Group VIIB or Group VIII metal or compound thereof:
This subclass is indented under subclass 186.25. Composition
which contains a Group VIIB metal (Mn, Tc, Re) or Group VIII
metal (Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) or compound
thereof, e.g., a composition comprised of zinc oxide
particles coated with silver permanganate, etc.
Subclass:
186.34
Contains organohalogen compound as oxidant:
This subclass is indented under subclass 186.25. Composition
which contains an organohalogen compound as the oxidizing or
oxygen generating agent, e.g., N, N1 -di (2, 4, 6 -
trichlorophenyl) -N, N1 -di - chlorourea stabilized with zinc
oxide, etc.
Subclass:
186.35
Chloroisocyanurate:
This subclass is indented under subclass 186.34. Composition
which contains chloroisocyanurates as the organohalogen-type
oxidant, e.g., a composition comprised of
trichloroisocyanuric acid stabilized with magnesium sulfate,
etc.
Subclass:
186.36
Contains free halogen or oxy-halogen acid type:
This subclass is indented under subclass 186.25. Composition
which contains an oxy-halogen acid compound, an anhydride
thereof, free halogen, or a compound which yields such a
halogen body when treated with water, basic material,
nonhalogen acid, or heat, e.g., a composition comprised of
aqueous sodium hypochlorite stabilized against trace amounts
of iron impurities with calcium chloride and sodium
carbonate, etc.
Subclass:
186.37
Contains alkaline earth metal:
This subclass is indented under subclass 186.36. Composition
which contains a Group IIA metal (Be, Mg, Ca, Sr, Ba), e.g.,
a composition comprised of calcium hypochlorite core coated
with a mixture of calcium hypochlorite dihydrate and sodium
chloride, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
625 radioactive compositions which contains radium in
admixture with materials normally classified in this
subclass.
Subclass:
186.38
Contains activator admixed with inorganic peroxide:
This subclass is indented under subclass 186.1. Composition
which contains an activator admixed with an inorganic
peroxide, i.e., a material which enhances or assists in the
decomposition of the peroxide, e.g., a bleaching composition
comprised of an aqueous solution of hydrogen peroxide admixed
with a carboxylic acid anhydride, etc.
Subclass:
186.39
Contains heterocyclic compound:
This subclass is indented under subclass 186.38. Composition
which contains a heterocylic compound, e.g., a composition
comprised of hydrogen peroxide and 1-acetyl - 5, 6 -
dihydrouracil, etc.
Subclass:
186.4
Oxygen heterocycle:
This subclass is indented under subclass 186.39. Composition
which contains an oxygen heterocycle, e.g., a composition
comprised of sodium perborate and beta-propiolactone, etc.
Subclass:
186.41
Hydrogen peroxide:
This subclass is indented under subclass 186.38. Composition
which contains hydrogen peroxide admixed with an activator,
e.g., a composition comprised of hydrogen peroxide and
sodamide, etc.
Subclass:
186.42
Contains organic peroxide:
This subclass is indented under subclass 186.1. Composition
which contains an organic peroxide, e.g., a composition
comprised of monoperoxyphthalic acid and magnesium sulfate,
etc.
Subclass:
186.43
Contains inorganic peroxide:
This subclass is indented under subclass 186.1. Composition
which contains an inorganic peroxide, e.g., a composition
comprised of hydrogen peroxide and a fabric discoloration
inhibitor, 3-Salicyloylamido benzimidazole, etc.
Subclass:
186.44
Contains inorganic nitrogen containing compound:
This subclass is indented under subclass 186.1. Composition
which contains an inorganic nitrogen containing compound,
e.g., a composition comprised of sodium hypochlorite and the
surface active agent, C-decyl-N-tri-methyl-alpha-betaine,
etc.
Subclass:
187.1
Free halogen or oxy-halogen acid type:
This subclass is indented under subclass 186.1. Composition
which contains an oxy-halogen acid compound, an anhydride
thereof, free halogen, or a compound which yields such a
halogen body when treated with water, basic material,
nonhologen acid, or heat, e.g., a bleaching composition
comprised of perchloric acid and polyvinylpyrrolidone, etc.
Subclass:
187.2
Oxidant contains halogen other than chlorine:
This subclass is indented under subclass 187.1. Composition
which contains a halogen oxidant other than chlorine, e.g., a
cleaning composition comprised of iodine and ethylene glycol,
etc.
Subclass:
187.21
Chlorine dioxide or monoxide:
This subclass is indented under subclass 187.1. Composition
which contains chlorine dioxide or monoxide, e.g., a
composition comprised of chlorine monoxide and 1, 1,
1-trichloroethane, etc.
Subclass:
187.22
With elemental chlorine:
This subclass is indented under subclass 187.21. Composition
which contains elemental chlorine, e.g., an aqueous
composition comprised of chlorine dioxide and chlorine, etc.
Subclass:
187.23
Chlorite:
This subclass is indented under subclass 187.1. Composition
which contains a chlorite salt, e.g., a composition comprised
of sodium hypochlorite admixed with sodium chloride, etc.
Subclass:
187.24
Hypochlorite:
This subclass is indented under subclass 187.23. Composition
which contains a hypochlorite salt, e.g., a composition
comprised of sodium hypochlorite admixed with magnesium
oxide, etc.
Subclass:
187.25
Alkali metal hypochlorite:
This subclass is indented under subclass 187.24. Composition
which contains a Group IA metal hypochlorite salt (Li, Na, K,
Rb, Cs), e.g., a dustless bleaching composition comprised of
lithium hypochlorite, sodium chloride, and chlorinated
biphenyl, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
625 radioactive compositions which contains francium in
admixture with materials normally classified in this
subclass.
Subclass:
187.26
Sodium:
This subclass is indented under subclass 187.25. Composition
which contains the hypochlorite in the form of its sodium
salt, e.g., a composition comprised of sodium hypochlorite
and magnesium silicate, etc.
Subclass:
187.27
Alkaline earth metal hypochlorite:
This subclass is indented under subclass 187.24. Composition
which contains a Group IIA metal hypochlorite (Be, Mg, Ca,
Sr, Ba), e.g., a composition comprised of magnesium
hypochlorite and citric or tartaric acid as solubilizing
agent, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
625 radioactive compositions for compositions which contain
radium in admixture with materials normally classified in
this subclass.
Subclass:
187.28
Calcium:
This subclass is indented under subclass 187.27. Composition
which contains a hypochlorite in the form of its calcium
salt, e.g., a composition comprised of calcium hypochlorite
and sodium chloride filler, etc.
Subclass:
187.29
With alkali metal compound:
This subclass is indented under subclass 187.28. Composition
which contains in addition to calcium hypochlorite a Group I
A metal compound (Li, Na, K, Rb, Cs), e.g., a composition
comprised of calcium hypochlorite, calcium oxide and sodium
carbonate, etc.
Subclass:
187.3
With alkaline earth metal compound:
This subclass is indented under subclass 187.28. Composition
which contains in addition to the calcium hypochlorite a
Group IIA metal compound (Be, Mg, Ca, Ba, Sr), e.g., a
composition comprised of calcium hypochlorite and sodium
stearate as lubricant, etc.
Subclass:
187.31
Chlorate or perchlorate:
This subclass is indented under subclass 187.1. Composition
which contains a chlorate or perchlorate salt as an oxidizing
agent, e.g., a composition comprised of sodium chlorate and
sodium chloride, etc.
Subclass:
187.32
Hypochlorous acid:
This subclass is indented under subclass 187.1. Composition
which contains hypochlorous acid, e.g., a solution of
hypochlorous acid in methyl ethyl ketone, etc.
(1) Note. Hypochlorous acid compositions claimed in terms
of their precursors are classified on the latter whenever
possible.
Subclass:
187.33
Oxidant contains N-C1 bond:
This subclass is indented under subclass 187.1. Composition
which contains a compound containing a nitrogen-to-chlorine
bond, as a hypochlorite precursor, e.g., a bleaching
composition comprised of 1, 3 - di-chloro - 5, 5 -
dimethylhydantoin and tetrasodium pyrophosphate buffer, etc.
Subclass:
187.34
Chloroisocyanurate:
This subclass is indented under subclass 187.33. Composition
which contains chloroisocyanurates, e.g., a composition
comprised of dichlorisocyanurate and a carrier, sodium
sulfate, etc.
Subclass:
188.1
REDUCTIVE BLEACHANT, DEOXIDANT, REDUCTANT, OR GENERATIVE:
This subclass is indented under the class definition.
Composition which contains substances for use in bleaching by
chemical reduction, in deoxygenation, or in other chemical
reductions of extraneous substances or in generating
hydrogen, or in making substances for such use, or in
processes of making such compositions or mere method of using
such compositions.
(1) Note. A material qualifies as a reducing agent either
if it is so claimed, disclosed or otherwise art-recognized as
such.
(2) Note. This subclass and its indents take compositions
which are claimed as detergents, but which recite only a
reductant and do not recite detergent-type ingredients.
SEE OR SEARCH THIS CLASS, SUBCLASS:
70 for a reversible, heat generating composition containing
a reductant or deoxygenating material.
178 for water softening or purifying or scale inhibiting
agent containing a deoxidant.
184 for compositions which are also chemically yielding.
372 for gaseous compositions containing a reductant (e.g.,
H2 + CO).
410 for compositions containing a reductant and claimed or
solely disclosed as a catalyst. Included herein are oxygen
scavenging or deoxidant compositions which function by
physical adsorption or absorption; where the absorptive or
adsorptive process in unclear or unspecified as being either
physical or chemical, the assumption will be made that the
process is physical.
SEE OR SEARCH CLASS:
8, Bleaching and Dyeing: Fluid Treatment and Chemical
Modification of Textiles and Fibers, 101 for processes of
bleaching or decolorizing textiles and which are other than
the mere application of a novel reducing bleach composition.
44, Fuel and Related Compositions, appropriate subclasses for
those reducing agents which can be considered fuels.
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Particulate Mixtures, appropriate subclasses for loose
mixtures of metal powders.
149, Explosive and Thermic Compositions or Charges,
appropriate subclasses for fuel intended for blasting,
firearms, jet propulsion of rockets, vehicles, rapidly
filling automotive passenger restraining gas bags, chemical
lasers, etc. Included in this class are propellants which,
upon initiation, are capable of undergoing a chemical change
at a relatively high rate of speed. The class also provides
for compositions which utilize a reducing agent to produce
usable heat in an irreversible or nonregenerating manner.
210, Liquid Purification or Separation, 749 for processes of
chemically treating a liquid for the purpose of purifying the
liquid using a deoxygenating or reducing composition;
subclass 750 for a method of removing dissolved oxygen from
water using alkylhydrazines.
260, Chemistry of Carbon Compounds, appropriate subclasses
for organic compounds, per se, which may be reductive and
admixtures of such compounds with agents designed to improve
the stability of such a compound.
420, Alloys or Metallic Compositions, appropriate subclasses
for powder of a single metal and for powder of an alloy or
metallic composition.
423, Chemistry of Inorganic Compounds, 265 for an inorganic
compound, which may be reductive, admixed with an agent
designed to improve the stability of such a compound.
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, for cleaning compositions, particularly 247
for deoxidant containing descaling agents and subclasses 302+
and 367+ for compositions including a chemical bleach
component which is a reducing agent.
520, Synthetic Resins or Natural Rubber, appropriate
subclasses for treating a resin with a reducing agent.
Subclass:
188.2
Sulfur containing reductant, bleachant, deoxidant, or
generative:
This subclass is indented under subclass 188.1. Composition
which contains a sulfur containing reductive bleachant,
deoxidant, reductant, or generative, e.g., a reductive
bleaching composition comprised of sodium formaldehyde
sulfoxylate and zinc sulfate, etc.
Subclass:
188.21
Sulfite:
This subclass is indented under subclass 188.2. Composition
which contains a sulfite, e.g., a dye-reducing aqueous
composition comprised of sodium borohydride and sodium
sulfite, etc.
Subclass:
188.22
Hydrosulfite (dithionite):
This subclass is indented under subclass 188.21. Composition
which contains the specific hydrosulfite (dithionite) salt,
i.e., (S2 04)-2, e.g., an oxygen consuming composition
comprised of sodium dithionite (Na2 S2 04) and sodium
sulfate, etc.
Subclass:
188.23
With organic additive:
This subclass is indented under subclass 188.22. Composition
which contains an organic additive e.g., a reducing
composition comprised of sodium dithionite and zinc
hydroxymethanesulfinate, etc.
Subclass:
188.24
Contains nitrogen:
This subclass is indented under subclass 188.23. Composition
which contains either an organic or inorganic nitrogen
containing additive, e.g., a reducing composition which
contains an aqueous dispersion of sodium dithionite (also
known as hydrosulfites or hyposulfites) and ammonium chloride
as a solubility suppressant, etc.
Subclass:
188.25
Hydrogen generating:
This subclass is indented under subclass 188.1. Composition
which generates hydrogen, i.e., one which either contains or
is designed to supply through chemical action hydrogen, e.g.,
a hydrogen generating composition consisting essentially of
lithium hydride particles suspended in a liquid mixture of
pyridine and benzene, etc.
(1) Note. For patents to be placed here there must be a
positive recitation that the composition generates hydrogen.
(2) Note. The ionization of hydrogen containing materials
is not considered as a hydrogen generating process and
therefore not classified here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
188.26 for a reducing composition of Li H particles
suspended in a mixture of benzene and pyridine for which
mixture there is no positive recitation of hydrogen
generation.
Subclass:
188.26
Hydride containing:
This subclass is indented under subclass 188.1. Composition
which contains a hydride, i.e., a more positive element which
contains the H - anion, e.g.,Li H, CaH[subscrpt]2[end
subscrpt], Li AlH[subscrpt]4[end subscrpt], etc.
Subclass:
188.27
Contains Al to H bond:
This subclass is indented under subclass 188.26. Composition
which contains a compound with an aluminum-to-hydrogen bond,
e.g., a reducing composition comprising, a solution of Na Al
H[subscrpt]2[end subscrpt] (O CH[subscrpt]2[end subscrpt]
CH[subscrpt]2[end subscrpt] - N(CH[subscrpt]3[end
subscrpt])[subscrpt]2[end subscrpt])[subscrpt]2[end
subscrpt]) in tetra-hydrofuran, etc.
Subclass:
188.28
Deoxidant or oxygen scavenging:
This subclass is indented under subclass 188.1. Composition
which functions to remove oxygen by chemical means, e.g., an
oxygen scavenger composition which consists of metallic iron,
silicic acid, soduim bromide, and calcium sulfate filler,
etc.
Subclass:
189
This subclass is indented under the class definition.
Compositions which contain substances for, or peculiar to,
use in chemically absorbing or binding extraneous CO, S,
negative elements, acids, or acid-anhydrides (includes salts
of weak acids).
SEE OR SEARCH CLASS:
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, appropriate subclasses, particularly 220+,
272+, 339+, 435, etc., for cleaning compositions containing
an alkaline component.
Subclass:
190
This subclass is indented under subclass 189. Compositions
which contain an adsorbent.
Subclass:
191
This subclass is indented under subclass 189. Compositions
which contain elementary iron, or an oxide of iron, or other
basic iron compound.
Subclass:
192
This subclass is indented under subclass 189. Compositions
which contain significant amounts of an alkali-metal or a
compound thereof.
SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers, for mercerizing
compositions.
Subclass:
193
This subclass is indented under the class definition.
Compositions which contain substances for, or peculiar to,
use in chemically absorbing or binding extraneous metals,
ammonia, alkalis, or other extraneous bases, or in making
substances for such use.
SEE OR SEARCH THIS CLASS, SUBCLASS:
179 for base exchange compositions for water softening or
scale inhibiting.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 696 for liquid
treating processes which prevent, decrease or delay
precipitation.
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, appropriate subclasses for setting bath
compositions disclosed to be solely for the purpose of
precipitation or formation of articles, e.g., filaments from
a spinning or article forming composition extruded or spun
thereinto, for example, see 183.
423, Chemistry of Inorganic Compounds, 700 for zeolites and
appropriate subclasses for aluminosilicate compounds having
base-exchange capabilities.
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, appropriate subclasses, particularly subclass
253, 255, 257, 258+, 269+, etc., for cleaning compositions
containing an acid component.
521, Synthetic Resins or Natural Rubbers, 25 for solid
polymeric ion-exchange materials, processes of preparing or
regenerating them.
Subclass:
194
This subclass is indented under the class definition.
Compositions specialized and designed for, or peculiar to,
use in absorbing, binding, removing, retaining, or emitting
water, or maintaining water concentrations within certain
ranges, excepting mere adsorbents and mere analytical,
testing, or indicating compositions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
181.1 for getters for electric lamps, electric space
discharge devices, and other evacuated or gas or vapor filled
containers which are designed to absorb, bind, remove, or
retain water vapor from the atmosphere in the container.
408 for analytical, testing, or indicating compositions.
SEE OR SEARCH CLASS:
502, Catalyst, Solid Sorbent, or Support Therefor: Product
or Process of Making, for a composition comprising a catalyst
which may be used in or as an incandescent mantle
composition.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 98 for colloid systems of continuous or
semicontinuous solid phase with discontinuous liquid phase
(gels, pastes, flocs, coagulates) or agents for such systems
or making or stabilizing such systems or agents, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
299.01
LIQUID CRYSTAL COMPOSITIONS:
This subclass is indented under the class definition.
Compositions containing a mesormorphic state of matter which
is intermediate between a crystalline solid and a normal
isotropic liquid; they resemble liquids mechanically (as to
viscosity) but crystals optically (light scattering and
reflection).
(1) Note. The combination of a liquid crystal composition
and structure is classified with the class providing for the
structure.
SEE OR SEARCH CLASS:
40, Card, Picture, or Sign Exhibiting, subclass 448 for
display devices using liquid crystals.
250, Radiant Energy, subclass 331 for nonchemical infrared
imaging including liquid crystal detector.
345, Computer Graphics Processing, Operator Interface
Processing, and Selective Visual Display Systems, subclass
38, 50+, and 87+ for selective electrical control of liquid
crystal display devices.
349, Liquid Crystal Cells, Elements and Systems, 1 and
182+, respectively wherein a particular liquid crystal
composition is used.
360, Dynamic Magnetic Information Storage or Retrieval, for
liquid crystal used to store or retrieve dynamic information
stored magnetically.
365, Static Information Storage and Retrieval, subclass 108
for liquid crystal used to store or retrieve static
information.
368, Horology: Time Measuring Systems or Devices, subclass
30, 84, and 242 for timepieces using liquid crystal
compositions.
428, Stock Material or Miscellaneous Articles, subclass 1
for liquid crystal stock material, i.e., a composition having
structure provided for by the class.
430, Radiation Imagery Chemistry: Process, Composition, or
Product Thereof, appropriate subclasses for radiation imagery
chemistry involving a process, product, or composition using
a liquid crystal.
436, Chemistry: Analytical and Immunological Testing, 1 for
analytical and analytical control processes employing liquid
crystals.
552, Organic Compounds, particularly 502 for organic
compounds having liquid crystal properties.
Subclass:
299.1
Containing pleochroic dye:
This subclass is indented under subclass 299.01.
Compositions containing a dye capable of variable absorption
of light, e.g., colorless to colored, colorless to
fluorescent, etc.
Subclass:
299.2
Containing dopant salt:
This subclass is indented under subclass 299.01.
Compositions containing a minor amount of salt added to a
liquid crystalline material.
Subclass:
299.3
Containing charge-transfer agents:
This subclass is indented under subclass 299.01.
Compositions containing charge carriers of the redox type,
etc.
Subclass:
299.4
Containing nonchiral aligning agents:
This subclass is indented under subclass 299.01.
Compositions containing additives not optically active which
promote the alignment of the composition relative to the cell
walls of the device containing the same.
Subclass:
299.5
Containing nonchiral additive having no specified mesophase:
This subclass is indented under subclass 299.01.
Compositions containing additives not optically active which
do not have liquid crystal properties, e.g., liquids which
improve the viscosity, response time, anisotropy, etc.
Subclass:
299.6
Containing nonsteryl liquid crystalline compound of specified
structure:
This subclass is indented under subclass 299.01.
Compositions containing a liquid crystal compound of
specified chemical structure for which a definite structural
formula can be drawn and which does not contain the
cyclopentanophenanthren neucleus, i.e.,
[figure]
(1) Note. A polymer which is not of a single molecular
species and is identifiable as an average of various
molecular species is excluded herefrom. A polymer which is a
single molecular species, e.g., dimer, etc., is included
hereunder. The recitation "polymer" will be presumed to be
material of no single molecular species in the absence of
specific contrary disclosure.
Subclass:
299.61
Including heterocyclic ring:
This subclass is indented under subclass 299.6. Compositions
wherein the liquid crystal compound has a ring of three or
more members, at least one of which is carbon and one or more
members selected from nitrogen or chalcogen.
Subclass:
299.62
Including fused or bridged rings:
This subclass is indented under subclass 299.6. Compositions
wherein the liquid crystal compound has at least two rings
with two or more carbon atoms in common, i.e., polycyclic
rings.
Subclass:
299.63
Including fully saturated ring:
This subclass is indented under subclass 299.6. Compositions
wherein the liquid crystal compound has a carbocyclic ring
which does not have any carbon to carbon unsaturation.
Subclass:
299.64
Aryl ester of aryl acid having three benzene rings:
This subclass is indented under subclass 299.6. Compositions
wherein the liquid crystal compound has an acid containing a
benzene ring which is attached through its acid function to
the radical derived by the removal of -OH from an alcohol
containing a benzene ring. The compound must also contain
three or more benzene rings.
Subclass:
299.65
Benzene rings linked by direct bond:
This subclass is indented under subclass 299.64.
Compositions wherein the liquid crystal ester compound having
three or more benzene rings also has at least two benzene
rings linked together by a direct bond.
Subclass:
299.66
Benzene rings linked by direct bond:
This subclass is indented under subclass 299.6. Compositions
wherein the liquid crystal compound has at least two benzene
rings linked together by a direct bond.
Subclass:
299.67
Phenyl benzoate derivative:
This subclass is indented under subclass 299.6. Compositions
wherein the liquid crystal compound is a ring substituted
derivative of [figure]
Subclass:
299.68
Including benzene rings bonded through azo, azoxy, or
azomethine linkage:
This subclass is indented under subclass 299.6. Compositions
wherein the liquid crystal compound is a ring substituted
derivative of the structure illustrated below, wherein X is
-CH=N-, -N=N, or -NO-N-. [figure]
Subclass:
299.7
Cholesteric liquid crystal composition containing a sterol
derivative:
This subclass is indented under subclass 299.01.
Compositions having a cholesteric containing compound which
is a derivative of the structure [figure]
Subclass:
301.16
This subclass is indented under the class definition.
Compositions which contain an organic substance having the
property of emitting light or analogous rays as a result of
irradiation by wave energy radiated by some other source.
(1) Note. In this subclass are placed patents directed to
compositions which contain ingredients which require
excitation to become fluorescent or phosphorescent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62.51 for luminescent magnetic compositions.
301.1 for luminescent compositions containing substances
which are spontaneously radioactive.
700 for chemiluminescent compositions.
SEE OR SEARCH CLASS:
250, Radiant Energy, subclass 302 for radiation tracer
methods including fluorescent and phosphorescent tracer
materials, subclasses 361+ for invisible radiant energy
responsive signalling devices which include a fluorescent or
phosphorescent detector responsive to the invisible
radiation, subclass 458.1 for methods and apparatus to
irradiate fluorescent and phosphorescent devices, and
subclass 483.1 for fluorescent and phosphorescent devices.
260, Chemistry of Carbon Compounds, appropriate subclasses
for luminescent organic compounds, per se.
313, Electric Lamp and Discharge Devices, subclass 92 for
cathode ray tubes having a fluorescent or phosphorescent
screen or target, and subclasses 483+ for electric lamps and
space discharge devices which include a fluorescent or
phosphorescent substance as a part thereof.
362, Illumination, subclass 84 for illuminating devices in
combination with fluorescent or phosphorescent material.
427, Coating Processes, 157 for processes of making a
luminescent coating.
430, Radiation Imagery Chemistry: Process, Composition, or
Product Thereof, subclass 139 for luminescent imagery.
508, Solid Antifriction Devices, Materials Therefor,
Lubricant and Separant Compositions for Moving Solid
Surfaces, and Miscellaneous Mineral Oil Compositions,
particularly 110, for lubricating oils containing fluorescent
ingredients.
520, Synthetic Resins or Natural Rubbers, appropriate
subclasses, particularly Class 523, subclass 161 for a
composition containing a synthetic resin or natural rubber
having utility as an invisible, ballpoint, or typewriter ink
or to processes of preparing said composition.
Subclass:
301.17
This subclass is indented under subclass 301.16.
Compositions in which the luminescent material either (1) can
be stimulated to emit coherent light or other electromagnetic
radiation, i.e., optical maser, or (2) luminesces under
exposure to ionizing radiation, i.e.,
radio-photoluminescent.
SEE OR SEARCH CLASS:
117, Single-Crystal, Oriented-Crystal, and Epitaxy Growth
Processes; Non-Coating Apparatus Therefor, for processes and
non-coating apparatus for growing therein-defined
single-crystal of all types of materials, including those
which may be suitable as or to produce a lasing or
scintillating composition. Class 118 generally provides for
coating apparatus, including single-crystal (e.g., epitaxy)
coating means.
372, Coherent Light Generators, appropriate subclasses for
lasers.
Subclass:
301.18
This subclass is indented under subclass 301.17.
Compositions which contain a metal having a specific gravity
greater than four.
Subclass:
301.19
This subclass is indented under subclass 301.16.
Compositions which are to be employed as flaw penetrants for
detecting surface discontinuties in test bodies.
Subclass:
301.21
This subclass is indented under subclass 301.16.
Compositions which are to be applied to or incorporated in
materials in order to obtain a bleaching effect or a whiter
appearance in daylight.
Subclass:
301.22
This subclass is indented under subclass 301.21.
Compositions which contain a heterocyclic compound having two
cyclic nuclei joined together through a straight chain
linkage containing at least one methine group.
Subclass:
301.23
This subclass is indented under subclass 301.22.
Compositions in which the compound contains a six-membered
ring consisting of three ring carbons and three ring
nitrogens.
Subclass:
301.24
This subclass is indented under subclass 301.22.
Compositions in which the compound contains a five-membered
ring having at least two hetero atoms of which one is
nitrogen and the other is either oxygen or sulfur.
Subclass:
301.25
This subclass is indented under subclass 301.21.
Compositions which contain a heterocyclic compound having a
six-membered ring with at least two hetero atoms, at least
one of which is nitrogen.
SEE OR SEARCH CLASS:
544, Organic Compounds, for compounds, per se, having a
six-membered ring consisting of four ring carbons and two
ring hetero atoms, at least one of which is nitrogen.
Subclass:
301.26
This subclass is indented under subclass 301.21.
Compositions which contain a heterocyclic compound having a
hexatomic ring made up of five carbon atoms and one nitrogen
atom.
SEE OR SEARCH CLASS:
546, Organic Compounds, 1 for compounds, per se, having a
six-membered ring consisting of five ring carbons and one
ring nitrogen.
Subclass:
301.27
This subclass is indented under subclass 301.21.
Compositions which contain a heterocyclic compound having a
five-membered ring having at least two hetero atoms, at least
one of which is a nitrogen atom.
SEE OR SEARCH CLASS:
548, Organic Compounds, 100 for azole compounds, per se.
Subclass:
301.28
This subclass is indented under subclass 301.27.
Compositions in which the ring also contains sulfur or
oxygen.
SEE OR SEARCH CLASS:
548, Organic Compounds, appropriate subclasses for thiazole
and oxazole compounds, per se.
Subclass:
301.29
This subclass is indented under subclass 301.27.
Compositions in which the ring contains three or four
nitrogen atoms.
SEE OR SEARCH CLASS:
548, Organic Compounds, subclasses 250-269.4 for tri- or
tetrazole compounds, per se.
Subclass:
301.31
This subclass is indented under subclass 301.21.
Compositions which contain a heterocyclic compound having a
pentatomic ring made up of four carbon atoms and one nitrogen
atom.
SEE OR SEARCH CLASS:
548, Organic Compounds, 400 for compounds, per se, having a
five-membered ring composed of four carbon atoms and one
nitrogen atom.
Subclass:
301.32
This subclass is indented under subclass 301.21.
Compositions which contain a heterocyclic compound which
contains either oxygen or sulfur as a hetero atom.
SEE OR SEARCH CLASS:
549, Organic Compounds, 1 for sulfur containing hetero rings
and subclasses 200+ for hetero-O-atom compounds, per se.
Subclass:
301.33
This subclass is indented under subclass 301.16.
Compositions which contain an inorganic material which is
luminescent in addition to the organic luminescent material.
Subclass:
301.34
This subclass is indented under subclass 301.16.
Compositions which includes (1) a film forming material which
occurs in nature (2) "cellulose" which is a carbohydrate
material derived from the structural matter of plant life
including lignocellulose, cotton and modified forms such a
cellophane and rayon or (3) cellulosic derivatives such as
cellulose esters or ethers.
Subclass:
301.35
This subclass is indented under subclass 301.16.
Compositions which include a synthetic resin.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, the Class
Definition for a discussion of "synthetic resin."
523, Synthetic Resins or Natural Rubbers, subclass 136 for a
composition containing a synthetic resin or natural rubber
which is resistant to, yet does not absorb, radioactive
materials or cathode rays or to processes of preparing said
composition.
Subclass:
301.36
This subclass is indented under the class definition.
Compositions which contain an inorganic material having the
property of emitting light or analogous rays as a result of
irradiation by wave energy radiated by some other source, and
an organic material which does not have such a property.
SEE OR SEARCH THIS CLASS, SUBCLASS:
301.4 and 301.16+, for organic and other inorganic
luminescent compositions respectively, and see the search
notes therein for itemization of other possible pertinent
fields of search.
Subclass:
301.4
INORGANIC LUMINESCENT COMPOSITIONS:
This subclass is indented under the class definition.
Compositions which are constituted entirely of inorganic
material and contain a component having the property of
emitting light or analogous rays as a result of irradiation
by wave energy radiated by some other source.
(1) Note. This and the indented subclasses also include
compositions in the preparation of which a temporary organic
vehicle, binder or adjuvant is employed and which is removed
or destroyed in the course thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
301.16 and 301.36, for luminescent compositions containing
organic material which may include inorganic luminescent
material; and see the search notes therein for itemization of
other possibly pertinent fields of search.
SEE OR SEARCH CLASS:
423, Chemistry of Inorganic Compounds, appropriate
subclasses, for inorganic luminescent compounds, per se.
Subclass:
301.5
This subclass is indented under subclass 301.4. Compositions
which contain tungsten in combined or elemental form.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, subclass 248 for a consolidated
metal powder composition having a noble metal or copper
base.
Subclass:
301.6
This subclass is indented under subclass 301.4. Compositions
which contain zinc or cadmium in combined or elemental form.
Subclass:
302
This subclass is indented under the class definition.
Compositions which are colloid systems; processes of making
or of resolving (breaking) the same; gels, coagulates;
potential dispersands (compositions containing in each case a
material adapted to be colloidally dispersed and a substance
for colloidally dispersing or stabilizing a colloidal
dispersion of the same); processes of using colloid systems;
compositions specialized and designed for use in, or peculiar
to, such systems, gels, coagulates, dispersands, or
processes, including wetting agents, substances for
stabilizing, resolving, or inhibiting formation of such
systems, and for dispersing materials.
(1) Note. A single chemical compound or element in
finely-divided solid state is not considered to be a colloid,
a colloid system, or colloidal, irrespective of the degree of
subdivision thereof. Search for such mere finely-divided
compounds or elements in the classes where such compounds or
elements, respectively are classifiable.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, 40 for flow restrictor
apparatus for forming emulsions of a plurality of liquids.
241, Solid Material Comminution or Disintegration,
appropriate subclasses, particularly 15 and 38+ for
processes and apparatus for producing suspensions of a solid
in a liquid by comminuting operations. See section 3 of the
main class definition of Class 241 for a complete statement
of the line.
366, Agitating, particularly 176.1 for process and apparatus
for forming suspensions or emulsions by agitation.
424, Drug, Bio-Affecting and Body Treating Compositions, 1.11
for the class defined compositions or methods comprising a
radionuclide or intended radionuclide, including those which
may be colloidal or an emulsion.
426, Food or Edible Material: Processes, Compositions, and
Products, appropriate subclasses, for processes of forming
food materials in collodial suspensions and emulsions and the
products or compositions produced thereby.
520, Synthetic Resins or Natural Rubbers, particularly
Classes 523 and 524 for aqueous dispersions, latexes, or
colloidal dispersions of a polymer including natural rubber
proper for that class.
Subclass:
303
This subclass is indented under subclass 302. Processes
which include (1) separating two or more materials, which
differ from each other either chemically or merely
physically, or (2) comminuting or preparing materials in a
finely-divided state, as final products substantially free
from colloid stabilizers therefor, by procedures which
comprise formations of resolutions of colloid systems or use
of such systems as agents, or (3) products under subclass 302
when made by such processes.
(1) Note. Mere processes of resolving (breaking) colloid
systems and products each of which contains a finely-divided
substance and an agent for stabilizing colloid dispersions
thereof, and processes of making such products are excluded
from this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
319 for processes of resolving colloidal systems.
363.5 for finely-divided solids combined with an agent to
facilitate dispersion.
SEE OR SEARCH CLASS:
208, Mineral Oils: Processes and Products, subclass 29 for
processes of separating paraffin from associated mineral oil
which include the formation of an emulsion or dispersion.
209, Classifying, Separating, and Assorting Solids, subclass
5 for processes of separating solids from solids by
flocculation or deflocculation.
241, Solid Material Comminution or Disintegration,
appropriate subclasses; see the reference to Class 241 under
"Search Class" in subclass 302 above.
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, 5 for processes of forming solid particulate
material directly from a molten or liquid mass, e.g., liquid
comminuting.
Subclass:
304
This subclass is indented under subclass 302. Colloid
systems or processes of making the same.
(1) Note. Colloidal systems are compositions which include
a discontinuous dispersion of one phase in a continuous
second phase.
Subclass:
305
This subclass is indented under subclass 304. Colloid
systems in which the outermost continuous phase (outermost
dispersion medium) is a gas, or processes of making the
same.
SEE OR SEARCH CLASS:
40, Card, Picture, or Sign Exhibiting, subclass 213 for
smoke producing apparatus and systems limited to skywriting.
149, Explosive and Thermic Compositions or Charges,
appropriate subclasses and particularly 29, 37+ and 78+ for
explosive or thermic compositions which may be intended to
yield smoke as result of combustion.
239, Fluid Sprinkling, Spraying, and Diffusing, subclass 8
and 9 for processes of dispersing liquids into gases.
Subclass:
306
This subclass is indented under subclass 304. Colloid
systems in which the outermost continuous phase (outermost
dispersion medium) is a liquid, or processes of making the
same.
SEE OR SEARCH CLASS:
508, Solid Antifriction Devices, Materials Therefor,
Lubricant and Separant Compositions for Moving Solid
Surfaces, and Miscellaneous Mineral Oil Compositions,
particularly 110, for lubricants containing colloidally
dispersed solid matter.
Subclass:
307
This subclass is indented under subclass 306. Colloid
systems which include a gas directly dispersed in the
outermost (liquid) phase, or processes of making the same.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 6.5 and 8.05, for fire extinguishive foams.
61 for froth flotation compositions.
350 for compositions containing a gas generative agent and a
foam stabilizing agent.
Subclass:
308
This subclass is indented under subclass 306. Colloid
systems in which the major part of the outermost continuous
phase consists of one or more organic compounds, or processes
of making the same.
Subclass:
309
This subclass is indented under subclass 308. Colloid
systems in which the major part of the solid or liquid
matter, directly dispersed in the outermost phase, consists
of one or more chemical elements or inorganic compounds.
Subclass:
310
This subclass is indented under subclass 308. Colloid
systems in which the major part of the outermost continuous
phase consists of water, or processes of making the same.
SEE OR SEARCH CLASS:
507, Earth Boring, Well Treating, and Oil Field Chemistry,
100 for earth boring and well treating colloidal
dispersions.
Subclass:
311
This subclass is indented under subclass 310. Colloid
systems in which the major part of the solid or liquid matter
directly dispersed in the outermost phase consists of one or
more organic compounds.
Subclass:
311.5
This subclass is indented under subclass 311. Colloid
systems wherein the dispersands comprise a bituminous
material which is usually a solid or semi-solid hydrocarbon
such as, for example, asphalt, pitch, tar or paraffin wax.
(1) Note. See Class 106, Compositions: Coating or Plastic,
subclass 277 for coating or plastic compositions prepared by
admixing bituminous emulsions with other ingredients. The
line between Classes 106 and 252 in regard to bituminous
emulsions is as follows: Processes of preparing bituminous
emulsions and the emulsions so produced are in Class 252 even
though the emulsions have utility as coating or plastic
compositions, unless the emulsions contain ingredients over
and above those necessary for the preparation or maintenance
of the colloid system, such as, for example, cementitious
material, pigments, fillers or aggregates.
SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, see (1) Note above.
Subclass:
312
This subclass is indented under subclass 311. Colloid
systems in which the matter directly dispersed in the
outermost phase is an oil or is in a liquid state.
SEE OR SEARCH CLASS:
424, Drug, Bio-Affecting and Body Treating Compositions, 1.11
for class defined compositions or methods comprising a
radionuclide or intended radionuclide.
514, Drug, Bio-Affecting and Body Treating Compositions, 939
for a class-defined composition which is a mineral oil-water
emulsion.
426, Food or Edible Material: Processes, Compositions, and
Products, 194 for food emulsions.
508, Solid Antifriction Devices, Materials Therefor,
Lubricant and Separant Compositions for Moving Solid
Surfaces, and Miscellaneous Mineral Oil Compositions,
particularly 110, for lubricants containing colloidal
dispersions of oil.
Subclass:
313.1
Inorganic major dispersands only:
This subclass is indented under subclass 310. Colloid
systems in which the major part of the solid or liquid matter
directly dispersed in the outermost phase consists of one or
more chemical elements or inorganic compounds.
SEE OR SEARCH CLASS:
508, Solid Antifriction Devices, Materials Therefor,
Lubricant and Separant Compositions for Moving Solid
Surfaces, and Miscellaneous Mineral Oil Compositions,
particularly 110, for lubricants containing colloidallly
dispersed inorganic matter.
Subclass:
313.2
Silica:
This subclass is indented under subclass 313.1. Subject
matter wherein silica is the chemical element or in the
inorganic compound.
Subclass:
314
This subclass is indented under subclass 306. Processes
which include making colloid systems in which in each case
the outermost continuous phase is a liquid.
(1) Note. Patents which include claims for colloid system
products are not classifiable here but in the appropriate
subclass above providing for the product.
Subclass:
315.01
Gels, coagulates, or dispersands:
This subclass is indented under subclass 302. Subject matter
which includes a gel, coagulate or a potential dispersand,
i.e., a composition which contains a material, adapted to be
colloidally dispersed, admixed with a substance either for
colloidally dispersing or stabilizing a colloidal dispersion
or processes of making thereof.
(1) Note. A gel is defined as a two-component system of a
semi-solid nature, i.e., a colloidal solution of a liquid in
a solid. The gelling component is usually of the lyophilic
type and present in concentrations less than 10 percent. As
defined, this would exclude silica gels and aluminosilicate
gels and other materials which are described as being
particulate, microspheroidal, spheroidal, etc. or possessing
descriptive properties, e.g., pore volume, pore diameter,
surface area, etc. and any term or expression which will
indicate destruction of the two-component system.
(2) Note. A gelled composition which is claimed or solely
as having a function or utility is provided for in one of the
composition classes. See this class, Lines With Other
Classes and Within This Class, first paragraph.
SEE OR SEARCH THIS CLASS, SUBCLASS:
194 for a composition which is designed to remove or bind
water in the form of a gel.
410 for materials is designed to catalyze, absorb or adsorb
liquids and producing gels.
SEE OR SEARCH CLASS:
260, Chemistry of Carbon Compounds, 112 for gelatin or
gel-like proteins.
521, Synthetic Resins or Natural Rubbers, subclass 28 for
the mixture of a synthetic ion exchange resin in gel form;
subclasses 53+, for the gel of aporous synthetic resin.
523, Synthetic Resins or Natural Rubbers, subclasses 100-173,
for nonporous synthetic polymeric gels with specified
functions or uses.
524, Synthetic Resins or Natural Rubbers, 1 for synthetic
polymeric gels.
Subclass:
315.1
Organic:
This subclass is indented under subclass 315.01. Subject
matter wherein the composition contains organic material.
SEE OR SEARCH CLASS:
260, Chemistry of Carbon Compounds, the main Class
Definition, for the definition of organic compounds.
Subclass:
315.2
Inorganic material coated, impregnated, or surface-modified
with organic material:
This subclass is indented under subclass 315.1. Subject
matter wherein inorganic material has been rendered
organophilic by coating, inpregnating or surface-modifying
with organic material.
Subclass:
315.3
Carbohydrate or derivative:
This subclass is indented under subclass 315.1. Subject
matter wherein the organic material is a carbohydrate or
derivative thereof.
Subclass:
315.4
Carboxylic acid ester, acid, or salt thereof:
This subclass is indented under subclass 315.1. Subject
matter wherein the organic material is a carboxylic acid
ester, acid or salt thereof.
Subclass:
315.5
Metal silicate or clay:
This subclass is indented under subclass 315.01. Subject
matter wherein the composition contains a metal silicate or
clay, e.g., bentonite, kaolin, etc.
Subclass:
315.6
Silica:
This subclass is indented under subclass 315.01. Subject
matter wherein the composition contains silica.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.01 for the definition of a gel proper for this
subclass.
SEE OR SEARCH CLASS:
423, Chemistry of Inorganic Compounds, subclass 338 silica
by gelling, wherein the silica is described in particulate
terms, e.g., microspheroidal, spheroidal, pore volume, pore
diameter, surface area, etc., or wherein described as an
aerogel or xerogel.
Subclass:
315.7
Alumina:
This subclass is indented under subclass 315.01. Subject
matter wherein the composition contains alumina.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.01 for the definition of a gel proper for this
subclass.
SEE OR SEARCH CLASS:
423, Chemistry of Inorganic Compounds, 625 aluminum
compounds, for alumina gel, wherein the alumina gel is
described in particulate terms, e.g., microspheroidal,
spheroidal, pore volume, pore diameter, surface area, etc.
Subclass:
318
This subclass is indented under subclass 302. Compositions
which include material which, per se, is adapted to a
colloidally disperse, or be colloidally dispersed, or
function as a colloid dispersion medium, and a substance for
preventing or inhibiting colloidal dispersal of or in such
material.
Subclass:
319
This subclass is indented under subclass 302. Processes
which include breaking an emulsion; separating part or all of
any colloidally dispersed phase or colloid dispersion medium
from part, or all, of any other phase of a colloid system;
destroying the colloidal dispersion state of part or all of
any colloidally dispersed phase; inhibiting formation of an
emulsion or other colloid system, or inhibiting colloidal
dispersal of matter.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, for processes involving steps
resulting in separation of a gas from a fluid mixture
comprising (a) a gas and solid or liquid particles entrained
therein, (b) a liquid and gas entrained therein, or (c) a
plurality of gases.
166, Wells, 244.1 for processes of preventing
emulsification, or breaking emulsions in a well, which
include significantly claimed process steps of well treating
or well operation.
204, Chemistry: Electrical and Wave Energy, for electric or
electrolytic processes of resolving colloid systems
compositions which are the result of a wave energy process
are classified with the art use of said composition or
apparatus thereof.
208, Mineral Oils: Processes and Products, appropriate
subclasses for processes of breaking mineral oil and water
emulsions combined with some other treatment of the mineral
oil, and 177 for removal of a colloid stabilizing agent from
a mineral oil to prevent formation of an emulsion, or
colloid, containing the mineral oil.
209, Classifying, Separating, and Assorting Solids, for
separating solid from solids in general.
210, Liquid Purification or Separation, 600 for a process of
separating a liquid or solid from a liquid by a method which
is more than mere resolution of a colloid.
435, Chemistry: Molecular Biology and Microbiology, 262 for
processes of resolving colloid systems which include
fermentation.
Subclass:
320
This subclass is indented under subclass 319. Processes in
which the colloid systems treated or formations thereof
inhibited, include in each case a colloid system in which the
outermost continuous phase (outermost dispersion medium) is a
liquid.
SEE OR SEARCH CLASS:
435, Chemistry: Molecular Biology and Microbiology, 262 for
processes of resolving colloid systems which include
fermentation.
Subclass:
321
This subclass is indented under subclass 320. Processes in
which the substance directly dispersed in the outermost phase
of the colloid system treated, or formation thereof
inhibited, is a gas.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 241 for processes of
degasification of a liquid.
137, Fluid Handling, 170.1 for apparatus for controlling the
degree of frothing or foaming in the handling of gas charged
liquids.
202, Distillation: Apparatus, subclass 264 for apparatus
for breaking foam during distillation.
203, Distillation: Processes, Separatory, subclass 20 for a
distillation process including defoaming or inhibiting foam.
435, Chemistry: Molecular Biology and Microbiology, 301.1
for fermentation apparatus including means for breaking
foams.
Subclass:
322
This subclass is indented under subclass 320. Processes
which include bringing the materials to be treated into
contact with solid agents which function as adsorbents, solid
physical absorbents, differential adherence surfaces, or
otherwise as loose particulate solid matter functioning
physically only.
Subclass:
323
This subclass is indented under subclass 322. Processes in
which the treating substance contains both an organic
compound and a free chemical element or an inorganic
compound, other than water.
Subclass:
324
This subclass is indented under subclass 322. Processes in
which the treating substances contain free chemical elements
or inorganic compounds, other than water.
Subclass:
325
This subclass is indented under subclass 322. Processes in
which the treating substances contain organic compounds.
Subclass:
326
This subclass is indented under subclass 320. Processes
which include adding solid or liquid treating substances
other than the principal components of the material treated.
Subclass:
327
This subclass is indented under subclass 326. Processes
which include adding treating substances, other than mere
carrier-solvents for other treating agents, and other than
the principal components of the material treated in each
case, which physically or chemically dissolve, bind, or
destroy, part or all of the colloidally dispersed substances
or colloid dispersion media, other than the stabilizing
agents or which are liquid baths.
SEE OR SEARCH THIS CLASS, SUBCLASS:
348 for processes which include addition of one or more of
the principal components of the material being treated.
Subclass:
328
This subclass is indented under subclass 326. Processes in
which the colloid systems treated, or formation thereof
inhibited, include colloidal dispersions of water in
petroleum or hydrocarbons or vice versa.
Subclass:
329
This subclass is indented under subclass 328. Processes in
which the added treating substance includes both an organic
compound and a free chemical element or an inorganic compound
other than water.
Subclass:
330
This subclass is indented under subclass 328. Processes in
which the added treating substance includes a free chemical
element or inorganic compound other than water.
Subclass:
331
This subclass is indented under subclass 328. Processes in
which the added treating substance includes an organic
compound.
Subclass:
332
This subclass is indented under subclass 331. Processes in
which the added substance includes an organic compound which
contains a sulfo or sulfate radical or sulfur joined directly
to oxygen.
Subclass:
333
This subclass is indented under subclass 332. Processes in
which the added substance includes an organic compound
produced by treating petroleum or fraction thereof with
sulfuric acid or other sulfonating agent.
Subclass:
334
This subclass is indented under subclass 333. Processes in
which the added substance includes an organic amine, amide,
or nitrogen-base radical.
Subclass:
335
This subclass is indented under subclass 332. Processes in
which the added substance includes a protein or an organic
compound having a carboxyl radical.
Subclass:
336
This subclass is indented under subclass 335. Processes in
which the added substance includes an organic amine, amide,
or nitrogen-base radical.
Subclass:
337
This subclass is indented under subclass 335. Processes in
which an added sulfoxy or carboxylic compound contains a
carbon ring or is not an aliphatic compound.
Subclass:
338
This subclass is indented under subclass 332. Processes in
which the added substance includes an organic amine, amide,
or nitrogen-base radical.
Subclass:
339
This subclass is indented under subclass 332. Processes in
which the added substance includes an organic compound which
does not contain a sulfo or sulfate radical, sulfur joined
directly to oxygen, or a carboxyl, amine, amide, or
nitrogen-base radical.
Subclass:
340
This subclass is indented under subclass 331. Processes in
which the added substance includes a protein or an organic
compound having a carboxyl radical.
Subclass:
341
This subclass is indented under subclass 340. Processes in
which the added substance includes an organic amine, amide,
or nitrogen-base radical.
Subclass:
342
This subclass is indented under subclass 340. Processes in
which an added carboxylic compound contains a carbon ring or
is not an aliphatic compound.
Subclass:
343
This subclass is indented under subclass 340. Processes in
which the added treating substance includes an organic
compound which does not contain a carboxylic, amine, amide,
or nitrogen-base radical.
Subclass:
344
This subclass is indented under subclass 331. Processes in
which the added substance includes an organic amine, amide,
or nitrogen-base radical.
Subclass:
345
This subclass is indented under subclass 331. Processes in
which the added treating substance comprises an organic
compound which contains an element other than carbon,
hydrogen, and oxygen.
Subclass:
346
This subclass is indented under subclass 320. Processes
which include vaporizing, heating, or cooling part, or all,
of any phase.
Subclass:
347
This subclass is indented under subclass 346. Processes
which include mechanical treatment.
(1) Note. This subclass includes, for instance filtering,
specific agitation, mechanically shocking or centrifuging.
Subclass:
348
This subclass is indented under subclass 346. Processes
which include addition, to the material being treated of one
or more of the principal components thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
327 for resolving colloids which include solvents or liquid
baths other than a component of the colloid.
Subclass:
349
This subclass is indented under subclass 320. Processes
which include filtering, centrifuging, mechanical shock or
other mechanical treatment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for use of adsorbents, or screens or filter beds in
resolving colloids.
Subclass:
350
This subclass is indented under subclass 302. Compositions
for use in producing foams which comprise in each case a
foam-stabilizing agent and a substance for use in generating
a gas chemically or otherwise.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 6.5 and 8.05, for fire extinguishing foams or making same
or compositions for making same.
61 for compositions for froth flotation.
307 for foam compositions and processes for making foams.
Subclass:
351
This subclass is indented under subclass 302. Compositions
which comprise wetting, emulsifying, foam-stabilizing or
colloid dispersing or stabilizing agents, or processes of
making such compositions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 6.5, 7, 8.05, and 350, for other compositions including
colloid stabilizing or wetting agents.
SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers, subclasses 400-696 for
dyeing compositions including wetting agents.
Subclass:
352
This subclass is indented under subclass 351. Compositions
which comprise both an organic compound and a free chemical
element or an inorganic compound other than water, or
processes of making such compositions.
Subclass:
353
This subclass is indented under subclass 351. Compositions
which comprise organic compounds which contain a sulfo or
sulfate radical or sulfur joined directly to oxygen, or
processes of making such compositions.
Subclass:
354
This subclass is indented under subclass 353. Compositions
which comprise proteins or organic compounds which contain
carboxyl radicals, or processes of making such compositions.
Subclass:
355
This subclass is indented under subclass 353. Compositions
which comprise organic compounds which contain amine, amide
or nitrogen-base radicals, or processes of making such
compositions.
Subclass:
356
This subclass is indented under subclass 351. Compositions
which comprise proteins or organic compounds which contain
carboxyl radicals, or processes of making such compositions.
Subclass:
357
This subclass is indented under subclass 351. Compositions
which comprise organic compounds which contain amine, amide,
or nitrogen-base radicals, or processes of making such
compositions.
Subclass:
358
This subclass is indented under subclass 302. Compositions
which are substances for use in breaking emulsions or
resolving colloid systems, or inhibiting formation of
emulsions or other colloids, in which the primary dispersants
are liquids, or processes of making such compositions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
318 for compositions including potential dispersands or
dispersants with agents which will inhibit the formation of a
colloid system.
319 for processes of resolving colloids or inhibiting
colloidization involving the use of colloid resolving or
colloidalization inhibiting agents.
Subclass:
363.5
This subclass is indented under the class definition.
Compositions in which each contains a main substance present
as a solid phase and a second substance incorporated or
associated therewith for accelerating the rate of solution or
dispersion of the main substance in a fluid, and processes of
making the same.
(1) Note. For compositions containing substances in a
granular state and agents associated therewith for inhibiting
caking of the granules, search where the substances are
classifiable respectively.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, for compositions each of which contains a main
solid substance and a second substance associated therewith
for stabilizing or accelerating colloidal dispersion of the
main substance.
Subclass:
364
This subclass is indented under the class definition.
Compositions specialized and designed for, or peculiar to use
as solvents.
SEE OR SEARCH THIS CLASS, SUBCLASS:
69 for solvents for volatile refrigerants.
SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, subclass 311 for
vehicles or solvents for use in the production of coating or
plastic compositions.
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, appropriate subclasses, particularly subclass
118, 177+, 201+, and 405+, for cleaning compositions which
include solvents.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art; including those instances when a composition would
otherwise be proper for this subclass (364).
Subclass:
365
This subclass is indented under the class definition.
Compositions which in each case contain a substance as a base
and another substance (denaturant) for preventing or
hindering use of the base substance as a beverage or
ingestion thereof, materials (denaturants) for use as such
other substances, or processes of making such compositions or
materials.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art; including those instances when a composition would
otherwise be proper for this subclass (365) and its indented
subclasses.
Subclass:
366
This subclass is indented under subclass 365. Compositions
in which in each case the base substance contains an
alcohol.
SEE OR SEARCH CLASS:
44, Fuel and Related Compositions, 266 for solidified
alkanol, and subclasses 402, 411, 438, 446, and 451+ for
liquid fuels containing alkanol.
Subclass:
367.1
SOAPS (I.E., ALKALI-METAL SALTS OF WATER-INSOLUBLE FATTY
ACIDS OR OF ROSIN ACIDS):
This subclass is indented under the class definition.
Compositions which include an alkali-metal (i.e., Li, Na, K,
Rb, or Cs) salt of an unsubstituted or hydroxy-substituted,
saturated or unsaturated, higher fatty acid, or of rosin
(abietic) acid, which are of general utility and lack any
shape or structure to adapt them for use as cleaning agents;
or processes of preparing such compositions.
(1) Note. A higher fatty acid is a water-insoluble
monocarboxylic acid having an acyclic chain of at least seven
carbons attached directly to the carboxyl group by nonionic
bonding.
(2) Note. The compositions in this class frequently include
salts of mixtures of fatty acids derived from different
natural sources, such as two or more vegetable or fish oils,
animal fats, etc.
(3) Note. The compositions included herein are, for
example, used in well-drilling fluids, used in lubricant
compositions, combined with other components, or refined for
use as detergents and the like.
SEE OR SEARCH CLASS:
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, appropriate subclasses, particularly 152, 447+,
481+, etc., for soap-containing cleaning compositions.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art; including those instances when a composition would
otherwise be proper for this subclass (367.1).
554, Organic Compounds, appropriate subclasses, for higher
fatty acid salts, per se.
Subclass:
372
This subclass is indented under the class definition.
Compositions which are gaseous, or processes of making them.
SEE OR SEARCH THIS CLASS, SUBCLASS:
181.5 for gaseous getters for electric lamps, electric space
discharge devices and other evacuted or gas or vapor filled
containers.
SEE OR SEARCH CLASS:
48, Gas: Heating and Illuminating, for processes of, and
apparatus for, making producer gas, water-gas or other fuel
gases.
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, 300 for gaseous compositions
used in metallurgical processes.
313, Electric Lamp and Discharge Devices, 567 for electric
lamps and electric space discharge devices (e.g., radio
tubes) which have an envelope containing a gas and/or vapor
composition.
424, Drug, Bio-Affecting and Body Treating Compositions,
appropriate subclass for a gaseous anesthetic composition
classified on the basis of the anesthetically active
compound.
514, Drug, Bio-Affecting and Body Treating Compositions,
appropriate subclasses for a gaseous anesthetic composition
classified on the basis of the anesthetically active
compound; subclass 789 for a life-supporting gaseous
composition, e.g., deep-sea breathing gases, etc.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 1 for continuous gas or vapor phase colloid
system (e.g., smoke, fog, aerosol, cloud, mist) or agents for
such systems or making or stabilizing such systems or agents,
when generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art; including those instances when a composition would
otherwise be proper for this subclass (372) and its indented
subclasses.
Subclass:
373
This subclass is indented under subclass 372. Compositions
which contain significant amounts of both carbon monoxide, or
carbon-dioxide, and hydrogen, or processes of making such
compositions.
SEE OR SEARCH CLASS:
48, Gas: Heating and Illuminating, especially subclass 198.1,
for process claims deriving the gaseous mixture from a
hydrocarbon gas, and no product claim is present.
518, Chemistry: Fischer-Tropsch Processes; or Purification
or Recovery of Products Thereof, for processes of reacting
carbon oxides with hydrogen and the products thereof.
Subclass:
374
This subclass is indented under subclass 372. Compositions
which in each case contain significant amounts of both
nitrogen and hydrogen, or processes of making such
compositions.
Subclass:
375
This subclass is indented under subclass 374. Compositions
in which the direct source of the nitrogen is air or
elementary nitrogen only and the direct source of the
hydrogen is wholly or partly a chemcial compound of
hydrogen.
Subclass:
376
This subclass is indented under subclass 375. Compositions
in which the direct source of the hydrogen is wholly or
partly hydrocarbon matter.
Subclass:
377
This subclass is indented under subclass 374. Compositions
in which the direct sources of the nitrogen and hydrogen are
elementary nitrogen and hydrogen only, processes of making
such compositions, or processes of purifying compositions
which individually contain both elementary nitrogen and
elementary hydrogen.
Subclass:
378
This subclass is indented under the class definition.
Processes of exfoliating or intumescing vermiculite, other
micaceous substances, or other materials, or the products of
such processes.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, subclass 323.4 for
apparatus for puffing or intumescing cereal foods.
106, Compositions: Coating or Plastic, appropriate
subclasses particularly subclass 122, 601+ and 672+ for
coating or plastic compositions containing expanded
materials, and subclasses 417+ for micaceous pigments or
fillers.
125, Stone Working, 23.01 for processes of or apparatus for
splitting mica or other materials.
241, Solid Material Comminution or Disintegration, subclass 4
for processes of comminuting micaceous substances.
426, Food or Edible Material: Processes, Compositions, and
Products, appropriate subclasses for puffing or intumescing
food grain.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art; including those instances when a composition would
otherwise be proper for this subclass (378).
Subclass:
380
This subclass is indented under the class definition.
Compositions specialized and designed for, or peculiar to,
use as or in agents or materials for preventing, inhibiting
or reducing chemical or physical changes in other substances
or bodies when incorporated or associated therewith, and
processes of making the same, excepting compositions and
processes of making them which are primarily for use as
analytical, testing, or indicating compositions.
(1) Note. This subclass and indented subclasses take old
compounds limited to use as preserving agents and also the
combination of a preserving agent with the substance
preserved where such substance is so broadly claimed as not
to afford a basis of classification, e.g., "an organic
substance."
(2) Note. For compositions, or processes of making them,
each of which contains a main substance and an agent for
inhibiting caking of granules of, chemical decomposition of,
or other chemical or physical change of, the main substance,
search where the main substance is classifiable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
71 for compositions specialized and designed for, or
peculiar to, use in heat exchanges or which are low-freezing
(freezing point depressing) or high-boiling (boiling point
elevating), or which are adapted to form mixtures having a
lower pour-point or freezing point when mixed with other
substances.
601 for fire-proofing compositions.
SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, for protective
coating or impregnating compositions.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, appropriate
subclasses for processes for disinfecting, deodorizing,
preserving, or sterilizing.
424, Drug, Bio-Affecting and Body Treating Compositions, for
a composition for repelling, inhibiting or destroying a pest
such as bacteria, fungus, etc.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art; including those instances when a composition would
otherwise be proper for this subclass (380) and its indented
subclasses.
Subclass:
381
This subclass is indented under subclass 380. Compositions
specialized and designed for or peculiar to use as or in
agents for preventing, inhibiting or reducing caking of
granular material, or use in the form of distinct coating
blankets, layers or zones with respect to the materials with
which they are associated respectively.
(1) Note. For compositions each of which contains a main
substance and an agent for inhibiting caking of granules of
the main substance, search where the main substance is
classifiable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
2 for fire extinguishing.
601 for fire-retarding agents.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, 303 for solid treating
compositions for molten metal and subclass 709 for processes
of covering the surface of molten metal with a material to
prevent contact with the ambient atmosphere.
106, Compositions: Coating or Plastic, for coating
compositions.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, 40 for process of
storage or protection using a protective layer over the
material being stored or protected.
Subclass:
382
This subclass is indented under subclass 381. Compositions
which are essentially foams, liquids, or other fluids.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 for fire extinguishing foams.
8.1 for fire preventing foams.
62 for heat-insulating compositions.
Subclass:
383
This subclass is indented under subclass 381. Compositions
each of which contains both an organic compound and an
inorganic compound or element.
Subclass:
384
This subclass is indented under subclass 381. Compositions
which contain organic compounds.
Subclass:
385
This subclass is indented under subclass 381. Compositions
which contain inorganic compounds or elements.
Subclass:
387
This subclass is indented under subclass 380. Compositions
specialized and designed for, or peculiar to, use as or in
agents for preventing, inhibiting, or reducing, corrosion or
chemical attack of solid metals, or other solid materials, of
receptacles or apparatus.
(1) Note. For compositions each of which contains a main
substance and an agent for inhibiting corrosion by the main
substance, search where the main substance is classifiable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
381 for anti-caking, separative, or protective coatings or
zones.
397 for agents which inhibit corrosion by inhibiting
formation of corrosive products of chemical change.
SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, particularly subclass
14.05, for corrosion-inhibiting coating compositions.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, 7 for process of
maintaining an environment nondestructive to metal.
510, Cleaning Compositions for Solid Surfaces, Auxiliary
Compositions Therefor, or Processes of Preparing the
Compositions, subclass 255, 258+, 335+, 401+, etc., for
cleaning compositions that include anticorrosion agents.
Subclass:
388
This subclass is indented under subclass 387. Compositions
which contain organic compounds.
Subclass:
389.1
Component inorganic or organic comprising element other than
C,H,O,N,S, and halogen:
This subclass is indented under subclass 388. Compositions
comprising either an inorganic compound or an organic
compound which includes an element other than carbon,
hydrogen, oxygen, nitrogen, sulfur or a halogen (i.e.,
fluorine, chlorine, bromine, iodine and astatine).
Subclass:
389.2
Phosphorus containing:
This subclass is indented under subclass 389.1. Compositions
which includes a compound containing an atom of the element
phosphorus.
(1) Note. This subclass is the location for phosphoric and
polyphosphoric acids and esters and other derivatives
thereof.
Subclass:
389.21
Nitrogen and/or sulfur in phosphorus compound:
This subclass is indented under subclass 389.2. Compositions
in which the compound which includes an atom of phosphorus
also includes an atom of the element nitrogen, or the element
sulfur, or both nitrogen and sulfur.
Subclass:
389.22
Pentavalent P, except H(n + 2) PnO(3n + 1):
This subclass is indented under subclass 389.21.
Compositions in which the Phosphorus containing compound
includes pentavalent Phosphorus, such as phospho and
phosphono compounds, while excluding compounds of the formula
H (n+2)P nO (3n+1) (i.e., the phosphoric and polyphosphoric
acids).
Subclass:
389.23
Pentavalent P, except H (n+2)P nO (3n+1):
This subclass is indented under subclass 389.2. Compositions
in which the Phosphorus containing compound includes
pentavalent Phosphorus, such as phospho and phosphono
compounds, while excluding compounds of the formula H (n+2)P
nO (3n+1) (i.e., the phosphoric and polyphosphoric acids).
Subclass:
389.24
Trivalent P (e.g., phosphorus acid, phosphites, etc.):
Compositions under subclas 389.2 in which the phosphorus
containing compound includes trivalent phosphorous such as
phosphorus acid or its salts, the phosphites.
Subclass:
389.3
Silicon containing:
This subclass is indented under subclass 389.1. Compositions
which include a compound containing an atom of the element
silicon.
Subclass:
389.31
Organo silicon:
This subclass is indented under subclass 389.3. Compositions
in which the silicon containing compound is an organic
compound.
SEE OR SEARCH CLASS:
260, Chemistry of Carbon Compounds, the main class definition
for the definition of Organic Compounds.
Subclass:
389.32
Nitrogen containing (e.g., amino, etc.):
This subclass is indented under subclass 389.31. Composition
in which the organic silicon compound further includes an
atom of nitrogen.
Subclass:
389.4
Boron containing:
This subclass is indented under subclass 389.1. Compositions
which include a compound containing an atom of the element
boron.
Subclass:
389.41
Organo boron:
This subclass is indented under subclass 389.4. Compositions
wherein the boron containing compound is an organic
compound.
SEE OR SEARCH CLASS:
260, Chemistry of Carbon Compounds, the main class definition
for the definition of Organic Compounds.
Subclass:
389.5
Chromium containing:
This subclass is indented under subclass 389.1. Compositions
which include a compound containing an atom of the element
chromium.
Subclass:
389.51
Lead containing:
This subclass is indented under subclass 389.1. Compositions
which include a compound containing an atom of the element
lead.
Subclass:
389.52
Zinc or aluminum containing:
This subclass is indented under subclass 389.1. Compositions
which include a compound containing an atom of the element
zinc or the element aluminum.
Subclass:
389.53
Nickel, iron, cobalt, copper, maganese, mercury, or cadmium
containing:
This subclass is indented under subclass 389.1. Compositions
which include a compound containing an atom of any of the
elements nickel, iron, cobalt, copper, manganese, mercury or
cadmium.
Subclass:
389.54
Molybdenum, arsenic, antimony, vanadium, bismuth, tungsten,
selenium, or tellurium containing:
This subclass is indented under subclass 389.1. Compositions
which include a compound containing an atom of any of the
elements molybdenum, arsenic, antimony, vanadium, bismuth,
tungsten, selenium or tellurium.
Subclass:
389.61
Group IIA metal containing:
This subclass is indented under subclass 389.1. Compositions
which include a compound containing an atom of a group IIA
metal (i.e., beryllium, magnesium, calcium, strontium, barium
or radium).
Subclass:
389.62
Alkali metal or NH(4)+ containing:
This subclass is indented under subclass 389.1. Compositions
which include a compound containing an atom of an alkali
metal (i.e., lithium, sodium, potassium, rubidium, cesium or
francium or NH(4)+).
Subclass:
390
This subclass is indented under subclass 388. Compositions
which contain organic compounds which contain amine, amide,
azo, or nitrogen-base radicals.
Subclass:
391
This subclass is indented under subclass 390. Compositions
which contain organic compounds which contain sulfur.
Subclass:
392
This subclass is indented under subclass 390. Compositions
which contain organic compounds which contain oxygen.
Subclass:
393
This subclass is indented under subclass 388. Compositions
which contain organic compounds which contain a phenol or
quinone radical (oxygen bonded directly to carbon of a
benzene or naphthalene ring or other aromatic nucleus).
Subclass:
394
This subclass is indented under subclass 388. Compositions
which contain organic compounds which contain nitrogen.
Subclass:
395
This subclass is indented under subclass 388. Compositions
which contain organic compounds which contain sulfur.
Subclass:
396
This subclass is indented under subclass 388. Compositions
which contain organic compounds which contain oxygen.
Subclass:
397
This subclass is indented under subclass 380. Compositions
specialized and designed for, or peculiar to, use or in
anti-oxidants or agents for preventing, inhibiting, or
reducing oxidation, chemical decomposition, or other chemical
change.
(1) Note. For compositions each of which contains a main
substance and an agent for inhibiting chemcial decomposition
or other chemical change of the main substance, search where
the main substance is classifiable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
381 for protective layers.
386 for agents for inhibiting knock or explosions.
387 for anticorrosion agents.
Subclass:
398
This subclass is indented under subclass 397. Compositions
which contain plant or animal matter, or extracts thereof, of
unknown constitutions.
Subclass:
399
This subclass is indented under subclass 397. Compositions
which contain organic compounds.
Subclass:
400.1
Component inorganic or organic comprising element other than
C,H,O,N,S, and halogen:
This subclass is indented under subclass 399. Compositions
comprising either an inorganic compound or an organic
compound which includes an element other than carbon,
hydrogen, oxygen, nitrogen, sulfur or a halogen (i.e.,
fluorine, chlorine, bromine, iodine and astatine).
Subclass:
400.2
Phosphorus containing:
This subclass is indented under subclass 400.1. Compositions
which includes a compound containing an atom of the element
phosphorus.
(1) Note. This subclass is the location for phosphoric and
polyphosphoric acids and ester and other derivatives
thereof.
Subclass:
400.21
Nitrogen or sulfur in phosphorus compound:
This subclass is indented under subclass 400.2. Compositions
in which the compound which includes an atom of phosphorus
also includes an atom of the element nitrogen, or the element
sulfur.
Subclass:
400.22
Pentavalent P, but not fully oxygenated:
This subclass is indented under subclass 400.21.
Compositions in which the Phosphorus containing compound
includes pentavalent Phosphorus wherein an element other than
Oxygen is directly bonded to the Phosphorus.
Subclass:
400.23
Pentavalent P, but not fully oxygenated:
This subclass is indented under subclass 400.2. Compositions
in which the Phosphorus containing compound includes
pentavalent Phosphorus wherein an element other than Oxygen
is directly bonded to the Phosphorus.
Subclass:
400.24
Trivalent P (e.g., phosphorous acid, phosphites, etc.):
This subclass is indented under subclass 400.2. Compositions
in which the phosphorus containing compound includes
trivalent phosphorus.
Subclass:
400.3
Silicon containing:
This subclass is indented under subclass 400.1. Compositions
which include a compound containing an atom of the element
silicon.
Subclass:
400.31
Organo silicon:
This subclass is indented under subclass 400.3. Compositions
in which the silicon containing compound is an organic
compound.
SEE OR SEARCH CLASS:
260, Chemistry of Carbon Compounds, the main class definition
for the definition of Organic Compounds.
Subclass:
400.4
Boron containing:
This subclass is indented under subclass 400.1. Compositions
which include a compound containing an atom of the element
boron.
Subclass:
400.41
Organo boron:
This subclass is indented under subclass 400.4. Compositions
wherein the boron containing compound is an organic
compound.
SEE OR SEARCH CLASS:
260, Chemistry of Carbon Compounds, the main class definition
for the definition of Organic Compounds.
Subclass:
400.5
Chromium containing:
This subclass is indented under subclass 400.1. Compositions
which include a compound containing an atom of the element
chromium.
Subclass:
400.51
Lead containing:
This subclass is indented under subclass 400.1. Compositions
which include a compound containing an atom of the element
lead.
Subclass:
400.52
Zinc or aluminum containing:
This subclass is indented under subclass 400.1. Compositions
which include a compound containing an atom of the element
zinc or the element aluminum.
Subclass:
400.53
Nickel, iron, cobalt, copper, maganese, mercury, or cadmium
containing:
This subclass is indented under subclass 400.1. Compositions
which include a compound containing an atom of any of the
elements nickel, iron, cobalt, copper, manganese, mercury or
cadmium.
Subclass:
400.54
Molybdenum, arsenic, antimony, vanadium, bismuth, tungsten,
selenium or tellurium containing:
This subclass is indented under subclass 400.1. Compositions
which include a compound containing an atom of any of the
elements molybdenum, arsenic, antimony, vanadium, bismuth,
tungsten, selenium or tellurium.
Subclass:
400.61
Group IIA metal containing:
This subclass is indented under subclass 400.1. Compositions
which include a compound containing an atom of a group IIA
metal (i.e., beryllium magnesium, calcium, strontium, barium
or radium).
Subclass:
400.62
Alkali metal or NH(4)+ containing:
This subclass is indented under subclass 400.1. Compositions
which include a compound containing an atom of an alkali
metal (i.e., lithium, sodium, potassium, rubidium, cesium or
francium or NH([subscrpt]4[end subscrpt])+).
Subclass:
401
This subclass is indented under subclass 399. Compositions
which contain organic compounds which contain amine, amide,
azo, or nitrogen-base radicals.
Subclass:
402
This subclass is indented under subclass 401. Compositions
which contain organic compounds which contain sulfur.
Subclass:
403
This subclass is indented under subclass 401. Compositions
which contain organic compounds which contain oxygen.
Subclass:
404
This subclass is indented under subclass 399. Compositions
which contain organic compounds which contain a phenol or
quinone radical (oxygen bonded directly to carbon of a
benzene or naphthalene nucleus or other aromatic nucleus).
Subclass:
405
This subclass is indented under subclass 399. Compositions
which contain organic compounds which contain nitrogen.
Subclass:
406
This subclass is indented under subclass 399. Compositions
which contain organic compounds which contain sulfur.
Subclass:
407
This subclass is indented under subclass 399. Compositions
which contain organic compounds which contain oxygen.
Subclass:
408.1
NONREACTIVE ANALYTICAL, TESTING, OR INDICATING COMPOSITIONS:
This subclass is indented under the class definition.
Compositions specialized and designed for, or peculiar to,
use in physical analysis, testing or indicating, or as
warning agents which do not chemically react in use.
SEE OR SEARCH THIS CLASS, SUBCLASS:
68 for refrigerants containing warning agents.
301.16 for compositions containing fluorescent or
phosphorescent substances as analytical, testing, or
identification agents.
SEE OR SEARCH CLASS:
48, Gas: Heating and Illuminating, subclass 195 for fuel
gases containing warning agents.
73, Measuring and Testing, for testing processes and
apparatus not otherwise classified.
424, Drug, Bio-affecting and Body Treating Compositions, 9.1
for a composition adapted to diagnose a body condition or for
a method of determining the potency of a composition of that
class (424) by a test in a living body.
436, Chemistry: Analytical and Immunological Testing, for
compositions useful as standards or as materials used in a
process of analysis involving a chemical reaction.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art; including those instances when a composition would
otherwise be proper for this subclass (408.1).
Subclass:
478
Compositions specialized and designed to prevent the passage
of X-radiation or other wave energy, outside the visible
spectrum, such as is released in nuclear transformation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
300 for compositions specialized for use as optical filter
compositions including those which filter ray energy outside
the visible spectrum.
SEE OR SEARCH CLASS:
250, Radiant Energy, 515.1 for radiation shields including
X-ray shields.
378, X-Ray or Gamma Ray Systems or Devices, 145 for beam
control devices.
420, Alloys or Metallic Compositions, 122.1 for alloys which
are opaque to X-radiation or neutrons.
424, Drug, Bio-Affecting and Body Treating Compositions, 4
for an X- ray contrast composition to be used in an animal
body and subclasses 59+ for a sun or radiation screening
composition to be applied to a living body, e.g., sun tanning
lotion, etc.
520, Synthetic Resins or Natural Rubbers, appropriate
subclasses, particularly Class 523, subclass 136 for a
composition containing a synthetic resin or natural rubber
which is resistant to, yet does not absorb, radioactive
materials or cathode rays or to processes of preparing said
composition.
Subclass:
492
This subclass is indented under the class definition.
Composition specialized for use in preparing, coating or
regenerating incandescent mantles, and mantles defined solely
in terms of the composition of which they are composed.
(1) Note. The term "mantle" is intended to include all
devices which are designed to give off light by being heated
to incandescence by a combustion flame.
(2) Note. Included herein are also processes of making
mantles which involve no more than preparing or regenerating
the composition of which the mantle is composed. For
example, this subclass includes processes wherein a textile
base is coated or impregnated with a composition classifiable
in this subclass and the textile base is then burned off.
SEE OR SEARCH THIS CLASS, SUBCLASS:
479 for similar compositions which are claimed as
electrodes, filaments and shields for electric lamps and
electric space discharge devices.
SEE OR SEARCH CLASS:
427, Coating Processes, subclass 159 for coating processes
wherein the product is an incandescent mantle.
431, Combustion, 100 for a burner using a mantle, or for
mantle structure.
502, Catalyst, Solid Sorbent, or Support Therefor: Product
or Process of Making, for a composition comprising a catalyst
which may be used in or as an incandescent mantle
composition.
Subclass:
500
This subclass is indented under the class definition.
Compositions which either conduct or emit electrons not
provided for above.
(1) Note. This is the residual home for all conductive and
emissive compositions and all electrical devices defined
solely in terms of their composition with no claimed
significant device structure. By way of example only, these
devices are electrodes, filaments or shields for electric
lamps and electric space discharge devices, welding
electrodes, contacts, switches, brushes, and resistances.
(2) Note. Where the device is claimed in terms of the
composition of which it is composed and also in terms of
significant device structure, it is classified in the
appropriate class providing for such art devices. See the
search notes below for such art classes.
(3) Note. Where a patent contains claims to the electrical
device defined only by its composition classified in this or
indented subclasses and also claims to a method of preparing
such device provided for in another class, the patent is
classified in this class (252) and cross-referenced to such
other class. See the search notes below for other classes
which provide for methods of making electrical devices.
(4) Note. This and indented subclasses are superior to
other composition classes as to coating or plastic
compositions useful in making or coating electrical devices.
See Lines With Other Classes and Within This Class, Lines For
Particular Class 252 Subclass Areas, for a discussion of the
lines between this area and other classes.
(5) Note. Where the claimed electrically conductive or
emissive device is defined in terms of only a single
material, it is classified in the appropriate class providing
for such material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62.2 for electrolytes for electrical devices such as
rectifiers and condensers.
62.3 for barrier layer device compositions.
62.5 for magnetic compositions.
62.9 for piezoelectric compositions.
181.1 for compositions specialized for use as getters for
electric lamps and electric space discharge devices and for
materials and compositions specialized for use in generating
a gas or vapor within the container of an electric lamp or
electric space discharge device. Where the composition has
utility as a getter or gas or vapor generating material
within the envelope of an electric lamp or electric space
discharge device, and also as an electrode or filament useful
for purposes other than gettering or generating a gas or
vapor (e.g., emitting electrons), it is classified in
subclasses 181.1+ and cross-referenced to subclasses 500+.
301.1 for radio-active compositions and materials.
301.16 through 301.6, for fluorescent and phosphorescent
compositions and materials.
502 for electrically conductive or emissive compositions
comprising carbon.
570 for fluent dielectric compositions ("insulating oils")
which contain a hydrocarbon and a nonhydrocarbon.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, 228 for products with a
continuous phase of metal made by consolidating metal
particles which are electrically conductive or emissive.
96, Gas Separation: Apparatus, subclass 95 and 98 for
electrode stock material or composite which has been
specifically altered, configured, or constructed for use in
electric or electrostatic field separation apparatus for gas
separation.
106, Compositions: Coating or Plastic, appropriate
subclasses for miscellaneous coating, impregnating and
plastic compositions including electrical insulating
compositions. See the (2) Note of the class definition of
Class 106, and the reference to this class (252) therein.
148, Metal Treatment, 240 for processes of treating solid
metal with a reactive material to form a coating thereon.
200, Electricity: Circuit Makers and Breakers, subclass 166
for contacts and switches wherein there is significant
structure of the device claimed whether or not the device is
also defined in terms of the composition of which it is
composed.
204, Chemistry: Electrical and Wave Energy, 280 for
electrodes and electrode compositions specialized for use in
electrolytic apparatus adapted to carry out processes within
the scope of Class 204.
219, Electric Heating, 50 for arc welding and heating of
metal. Note particularly indented subclasses 146.1+ for
welding electrodes.
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, appropriate subclasses for processes within the
class definition, for production of articles which may be
disclosed to be electrodes for electrical devices or
electrical conductors. In particular, see 61 and 104+.
Subclasses 165+ pertains to forming of continuous or
indefinite length articles, e.g., filamentary products. See
subclass 30 for furnace lining formation or repair and see
the notes thereto.
310, Electrical Generator or Motor Structure, 252 for
electric current conducting brushes wherein there is
significant brush structure whether or not the composition of
which the brushes are composed is recited.
313, Electric Lamp and Discharge Devices, subclass 311 and
the subclasses specified in the Notes thereto for discharge
devices which have an electrode defined by the composition or
material of which it is composed, and subclasses 326+ for
filaments, electrodes and shields for electric lamps and
electric space discharge devices which are defined by
significant structure of the device, whether or not the
composition of the device is recited.
337, Electricity: Electrothermally or Thermally Actuated
Switches, appropriate subclasses for electrothermal and
thermally actuated switches with contacts of a particular
material or composition of material especially 270 and 416+
for particular fusible material.
338, Electrical Resistors, appropriate subclasses, for
electrical resistors wherein there is significant resistance
structure of the device claimed, whether or not the device is
also defined in terms of the composition of the element or
terminals.
373, Industrial Electric Heating Furnaces, 88 and 71+ for
furnace electrodes and furnace linings, respectively, of
specific composition where combined with furnace structure or
when defined in terms of significant electrode or lining
structure.
381, Electrical Audio Signal Processing Systems and Devices,
179 for resistance element used in the transmission of sound
by means of electricity recited in terms of significant
resistant structure.
419, Powder Metallurgy Processes, subclass 4 for powder
metallurgical methods for producing filaments or fibers.
420, Alloys or Metallic Compositions, for single metals and
for alloys and metallic compositions.
427, Coating Processes, 58 for processes of coating, per se,
wherein the product is an electrical article.
428, Stock Material or Miscellaneous Articles, appropriate
subclasses, especially 375, 408, 411+, 539.5, 545, 553+, and
615+ for a mere impregnated or coated base which may exhibit
electrically conductive and emissive properties. Such coated
bases include electrodes, filaments and shields for electric
lamps and discharge devices, welding electrodes, resistances,
brushes, contacts, wires and electrodes in general which are
not specifically provided for elsewhere, or do not include
sufficient structure to indicate classification elsewhere.
429, Chemistry: Electrical Current Producing Apparatus,
Product and Process, 209 for battery electrodes.
445, Electric Lamp or Space Discharge Component or Device
Manufacturing, and the classes specified in the notes thereto
for process and apparatus for the manufacture of electrical
conductors or emitters such as electrodes or emitters such as
electrodes or shields for electric space discharge devices.
505, Superconductor Technology: Apparatus, Material,
Process, 100 for high temperature (T[subscrpt]c[end
subscrpt] 30 K) superconducting materials, per se, or
subclasses 300+ for processes of producing same.
Subclass:
501.1
Light sensitive:
This subclass is indented under subclass 500. Compositions
wherein the electrical conductivity or emissivity varies with
the intensity of the light to which it is exposed.
SEE OR SEARCH CLASS:
250, Radiant Energy, the definitions of subclass 200 under
(7) Note, for the various classifications of photcells, per
se. These generally embody photosensitive compositions or
layers.
430, Radiation Imagery Chemistry: Process, Composition, or
Product Thereof,32 for compositions of this type limited to
use in radiation imagery.
Subclass:
502
This subclass is indented under subclass 500. Compositions
which contain as an ingredient elemental carbon.
(1) Note. Where the composition or device is composed of
carbon obtained from either plural sources or from natural
fibers, the patent is classified in this and indented
subclasses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
510 for compositions wherein an organic component is present
in addition to the elemental carbon, even if the organic
component is to be subsequently carbonized in whole or in
part.
SEE OR SEARCH CLASS:
201, Distillation: Processes, Thermolytic, appropriate
subclasses for a process of carbonizing carbonaceous
material.
423, Chemistry of Inorganic Compounds, 445 for carbon, per
se, including manufacturing processes involving a chemical
reaction.
501, Compositions: Ceramic, 99 for refractory composition
containing elemental carbon.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, subclass 901 for a collection of art under the
Class definition which discloses subject matter relating to a
colloid system comprising substantially pure elemental Carbon
in one of its various forms such as graphite, lamp black,
carbon black, fullerenes.
Subclass:
503
This subclass is indented under subclass 502. Compositions
which contain free metal in addition to the elemental
carbon.
Subclass:
504
This subclass is indented under subclass 502. Compositions
which contain a carbide in addition to the elemental carbon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
516 for other conductive or emissive compositions which
contain carbides.
Subclass:
505
This subclass is indented under subclass 502. Compositions
which contain a radio-active material in addition to the
elemental carbon.
(1) Note. Compounds of radium, uranium and thorium, for
example, are included in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
301.1 for miscellaneous compositions containing radio-active
materials.
517 for other conductive or emissive compositions which
contain a radio-active material.
SEE OR SEARCH CLASS:
427, Coating Processes, subclass 5 for coating processes,
per se, wherein the base or coating is radioactive.
Subclass:
506
This subclass is indented under subclass 502. Compositions
which contain a metal compound not provided for above in
addition to the elemental carbon.
Subclass:
507
This subclass is indented under subclass 506. Compositions
which contain a titanium or zirconium compound in addition to
the elemental carbon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
519.12 and 520.2+, for other conductive or emissive
compositions which contain titanium or zirconium compounds.
Subclass:
508
This subclass is indented under subclass 506. Compositions
which contain an aluminum compound in addition to the
elemental carbon.
Subclass:
509
This subclass is indented under subclass 506. Compositions
which contain a magnesium, alkaline earth metal or rare earth
metal compound in addition to the elemental carbon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
521.1 for other conductive or emissive compositions which
contain a rare earth compound.
Subclass:
510
This subclass is indented under subclass 502. Compositions
which contain an organic component in addition to the
elemental carbon.
(1) Note. Even if the organic component is to be
subsequently carbonized, wholly or in part, the composition
is classified herein.
Subclass:
511
This subclass is indented under subclass 510. Compositions
wherein the organic component is a resin (natural or
synthetic), a natural rubber or a derivative thereof.
SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, appropriate subclass
for plastic or coating compositions which contain a natural
resin and elemental carbon, particularly subclass 241.
520, Synthetic Resins or Natural Rubbers, appropriate
subclasses for synthetic resins or natural rubber and
compositions thereof.
Subclass:
512
This subclass is indented under subclass 500. Compositions
which contain free metals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
503 for conductive or emissive compositions containing free
metal and elemental carbon.
Subclass:
513
This subclass is indented under subclass 512. Compositions
wherein the free metal is a metal from the iron group.
(1) Note. The iron group comprises iron, nickel and
cobalt.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, 246 for a consolidatd metal
particle composition having a base of an Iron group, Copper
(Cu), or Noble metal.
Subclass:
514
This subclass is indented under subclass 512. Compositions
wherein the free metal is a noble metal.
(1) Note. The noble metals as herein provided for are gold,
silver, ruthenium, rhodium, palladium, osmium, iridium and
platinum.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, 246 for a consolidated metal
particle composition having a base of an Iron group, Copper
(Cu), or Nobel metal.
Subclass:
515
This subclass is indented under subclass 512. Compositions
wherein the free metal is tungsten.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, subclass 248 for a consolidated
metal particle composition having a tungsten base.
Subclass:
516
This subclass is indented under subclass 500. Compositions
which contain a carbide.
SEE OR SEARCH THIS CLASS, SUBCLASS:
504 for conductive or emissive compositions containing a
carbide and elemental carbon.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, subclass 236 for a consolidated
metal particle composition containing carbide.
Subclass:
517
This subclass is indented under subclass 500. Compositions
which contain a radio-active material.
(1) Note. Compounds of radium, uranium and thorium, for
example, are included in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
505 for conductive or emissive compositions containing
elemental carbon and a radio-active material.
Subclass:
518.1
Metal compound containing:
This subclass is indented under subclass 500. Compositions
which contain a metal compound not provided for above.
SEE OR SEARCH THIS CLASS, SUBCLASS:
506 for conductive or emissive compositions containing a
metal compound and elemental carbon.
Subclass:
519.1
Compound viewed as composition (i.e., wherein atoms or
molecules in a chemical formula are not present as whole
small integer values or cannot be multiplied by a
single-digit factor to yield integer values):
This subclass is indented under subclass 518.1. Compositions
which contain a compound wherein atoms or molecules in a
chemical formula are not present as whole small integer
values or cannot be multiplied by a factor in the single
digit to yield integer values. Such a compound is considered
a composition for purposes of this subclass and its indents.
(1) Note. The electrically conductive compounds provided
for herein are regarded as compositions according to the
Class 423 class definition (i.e., see Note (13) of Class
423). A mixture of such a compound proper for this subclass
with a separate and distinct component is also proper for
this subclass.
(2) Note. Class 505 is superior to Class 423 or Class 252.
SEE OR SEARCH CLASS:
423, Chemistry of Inorganic Compounds, for an inorganic
compound wherein plural elements are present in specifically
defined whole integer values.
505, Superconductor Technology: Apparatus, Material,
Process, for electrically conducting superconducting
compounds or compositions operative above 30 K.
Subclass:
519.12
Titanium containing:
This subclass is indented under subclass 519.1. Compositions
wherein the chemical formula has titanium therein.
Subclass:
519.13
Bismuth, ruthenium, or iridium containing:
This subclass is indented under subclass 519.1. Compositions
wherein the chemical formula has bismuth, ruthenium, or
iridium therein.
Subclass:
519.14
Sulfur, tellurium, selenium, nitrogen, phosphorus, or boron
containing:
This subclass is indented under subclass 519.1. Compositions
wherein the chemical formula has sulfur, tellurium, selenium,
nitrogen, phosphorus, or boron therein.
Subclass:
519.15
Four diverse metals containing:
This subclass is indented under subclass 519.1. Compositions
wherein the chemical formula has four or more diverse metals
therein.
Subclass:
519.2
Organometallic (e.g., soap, complex, etc.):
This subclass is indented under subclass 518.1. Compositions
wherein the metal compound is an organic compound.
(1) Note. The expression "organic compound" in this and
indented subclasses corresponds to the Class 260 class
definition (i.e., compounds containing carbon, which are
further characterized by the presence in a molecule thereof
of (a) two carbon atoms bonded together, (b) one atom of
carbon bonded to at least one atom of hydrogen or halogen, or
(c) one atom of carbon bonded to at least one atom of
nitrogen by a single or double bond, with the proviso that
HCN, CN-CN, HNCO, HNCS, cyanamide, cyanogen halides, fulminic
acid, metal carbides, and graphite are excluded from being
organic compounds).
Subclass:
519.21
With additional organic compound:
This subclass is indented under subclass 519.2. Compositions
which contain, in addition to the organometallic compound, an
additional organic compound which may itself be
organometallic.
SEE OR SEARCH THIS CLASS, SUBCLASS:
510 for conductive or emissive compositions containing an
organic compound and elemental carbon.
Subclass:
519.3
With organic compound:
This subclass is indented under subclass 518.1. Compositions
which contain an organic compound in addition to the metal
compound.
SEE OR SEARCH THIS CLASS, SUBCLASS:
510 for conductive or emissive compositions containing an
organic compound and elemental carbon.
Subclass:
519.31
The organic compound contains silicon:
This subclass is indented under subclass 519.3. Compositions
wherein the organic compound has at least one silicon atom
therein.
Subclass:
519.32
The organic compound is a natural resin, protein, lignin,
carbohydrate, or derivative thereof:
This subclass is indented under subclass 519.3. Compositions
wherein the organic compound is a natural resin, protein,
lignin, carbohydrate, or derivative thereof.
(1) Note. Natural resins include but are not limited to
shellac, copals from various sources (e.g., congo, manila,
etc.), amber, dammar, dead dammar, gum rosin, japan, japan
varnish, rosin (colophony), tall oil (liquid rosin), wood
rosin, burgundy pitch, gurjun balsam, canada balsam, sandrac,
mastic, accroides, benzoin, elemi, gamboge, gum thus, venice
turpentine, bordeaux turpentine, abietic acid, pimaric acid,
etc.
(2) Note. Examples of derivatives of natural resins
included herein are hydrogenated, esterified, polymerized, or
sulfurized natural resins, or salts thereof.
(3) Note. Protein is a naturally occurring polypeptide
(polyamide) of more than 100 a-amino acid residues or of
molecular weight greater than 10,000.
(4) Note. Lignin is a noncarbohydrate, polymeric substance
found in wood and woody plants which functions as a natural
plastic binder for the cellulose fibers. It is isolated
directly from wood or wood products or from the treatment of
wood (e.g., waste sulfite liquor or black liquor). The
structure of the lignin monomer is not completely known.
(5) Note. The term "carbohydrate or derivative" in this
subclass corresponds to the Class 536, subclass 1.1
definition (i.e., a carbohydrate is a saccharide whose
monomeric units are polyhydroxy monoaldehydes or polyhydroxy
monoketones, having the formula C[subscrpt]n[end
subscrpt](H[subscrpt]2[end subscrpt]O)[subscrpt]n[end
subscrpt] (wherein n is five or six), or the corresponding
cyclic hemiacetals thereof, or the reaction derivatives
thereof in which the product is of indeterminate structure or
the carbon skeleton and the carbonyl function or hemi-acetal
function of the saccharide unit are not destroyed).
Subclass:
519.33
The organic compound is a polymer:
This subclass is indented under subclass 519.3. Compositions
wherein the organic compound is a large molecule of many
repeating units; both liquid and solid polymers are
encompassed herein, as are both homopolymeric and copolymeric
substances.
(1) Note. Examples of polymers provided for herein are
polyacetylene, polypropylene, epoxy resin, poly(xylylidene),
polyester, poly(oxyalkylene), and polyacrylonitrile.
SEE OR SEARCH THIS CLASS, SUBCLASS:
511 for conductive or emissive compositions containing a
resin, rubber, or derivative thereof and elemental carbon.
Subclass:
519.34
The metal compound contains halogen, sulfur, selenium,
phosphorus, arsenic, boron, or nitrogen:
This subclass is indented under subclass 519.33.
Compositions wherein nitrogen, boron, arsenic, phosphorus,
selenium, sulfur, or halogen is present in the metal
compound.
Subclass:
519.4
Sulfur, selenium, or tellurium containing:
This subclass is indented under subclass 518.1. Compositions
wherein sulfur, selenium, or tellurium is present in the
metal compound.
Subclass:
519.5
Zinc compound:
This subclass is indented under subclass 518.1. Compositions
wherein the metal compound is a zinc compound.
Subclass:
519.51
Additional diverse metal containing:
This subclass is indented under subclass 519.5. Compositions
wherein an additional diverse metal atom is present in the
zinc compound.
Subclass:
519.52
With boron compound:
This subclass is indented under subclass 519.5. Compositions
which contain a boron compound in addition to the zinc
compound.
Subclass:
519.53
With halogen compound:
This subclass is indented under subclass 519.5. Compositions
which contain a halogen compound in addition to the zinc
compound.
Subclass:
519.54
Silicon containing or with compound of bismuth or silicon:
This subclass is indented under subclass 519.5. Compositions
wherein the zinc compound has at least one silicon atom
therein or wherein a bismuth or silicon compound is present
in addition to the zinc compound.
Subclass:
520.1
Tin compound:
This subclass is indented under subclass 518.1. Compositions
wherein the metal compound is a tin compound.
Subclass:
520.2
Titanium or zirconium compound:
This subclass is indented under subclass 518.1. Compositions
wherein the metal compound is a titanium compound or a
zirconium compound.
SEE OR SEARCH THIS CLASS, SUBCLASS:
507 for conductive or emissive compositions containing a
titanium or zirconium compound and elemental carbon.
Subclass:
520.21
Additional diverse metal containing:
This subclass is indented under subclass 520.2. Compositions
wherein an additional diverse metal atom is present in the
zirconium compound or in the titanium compound.
Subclass:
520.22
Boron, silicon, phosphorus, nitrogen, hydrogen, carbon, or
halogen containing:
This subclass is indented under subclass 520.2. Compositions
wherein boron, silicon, phosphorus, nitrogen, hydrogen,
carbon, or halogen is present in the titanium compound or in
the zirconium compound.
Subclass:
520.3
Silver, gold, or platinum compound:
This subclass is indented under subclass 518.1. Compositions
wherein the metal compound is a silver compound, a gold
compound, or a platinum compound.
Subclass:
520.4
Vanadium compound:
This subclass is indented under subclass 518.1. Compositions
wherein the metal compound is a vanadium compound.
Subclass:
520.5
Tungsten or yttrium compound:
This subclass is indented under subclass 518.1. Compositions
wherein the metal compound is a tungsten compound or an
yttrium compound.
Subclass:
521.1
Rare earth metal compound:
This subclass is indented under subclass 518.1. Compositions
wherein the metal compound is a rare earth metal compound.
(1) Note. The rare earth metals are lanthanum (La), cerium
(Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm),
samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb),
dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm),
ytterbium (Yb), and lutetium (Lu).
SEE OR SEARCH THIS CLASS, SUBCLASS:
509 for conductive or emissive compositions containing a
rare earth metal compound and elemental carbon.
Subclass:
521.2
Iron, cobalt, or nickel compound:
This subclass is indented under subclass 518.1. Compositions
wherein the metal compound is an iron compound, a cobalt
compound, or a nickel compound.
Subclass:
521.3
Silicon containing or with silicon compound:
This subclass is indented under subclass 518.1. Compositions
wherein silicon is present in the metal compound or wherein a
silicon compound is present in addition to the metal
compound.
Subclass:
521.4
Boron containing or with boron compound:
This subclass is indented under subclass 518.1. Compositions
wherein boron is present in the metal compound or wherein a
boron compound is present in addition to the metal compound.
Subclass:
521.5
Halogen, carbon, phosphorus, or nitrogen containing:
This subclass is indented under subclass 518.1. Compositions
wherein halogen, carbon, phosphorus, or nitrogen is present
in the metal compound.
Subclass:
521.6
With nonmetal compound containing halogen, nitrogen,
phosphorus, or sulfur:
This subclass is indented under subclass 518.1. Compositions
which have, in addition to the metal compound, a nonmetal
compound containing halogen, nitrogen, phosphorus, or
sulfur.
Subclass:
567
DEFINED LIQUID DIELECTRIC DISPERSED IN DEFINED WEB OR SHEET:
This subclass is indented under the class definition.
Subject matter wherein a self-sustaining web or sheet,
defined in terms of its composition, has distributed therein
a material, liquid at ambient temperatures, which also is
claimed in terms of its composition and which has indicated
electric insulating properties.
(1) Note. According to current PTO practice, a single-layer
web or sheet uniformly impregnated or swelled with another
material is considered to be a composition, rather than a
stock material.
(2) Note. The composition of the web or sheet itself must
be claimed in terms which indicate the presence of at least
one periodic-table group or atom other than carbon. Such
terms as "cellulosic", "silicic", "halogen", etc., are
sufficiently definite as to composition of the web or sheet
to be classified in this subclass (567). When the web or
sheet is identified only in broad, functional, or property
terms such as "substrate", "fibrous", "plastic", "porous",
"organic", "metallic", "dielectric", etc., and the liquid
component is described in terms of its composition and is
either claimed or disclosed as having such property as its
sole utility, classification is not proper herein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
570 for a fluent dielectric composition, per se, and for
situations wherein the web or sheet is identified only in
broad, functional, or property terms such as "substrate",
"fibrous", "plastic", "porous", "organic", "metallic",
"dielectric", etc., and the liquid composition is described
in terms of its composition and is either claimed or
disclosed as having such property as its sole utility, see
the notes thereto for the location of other electrically
insulating compositions.
SEE OR SEARCH CLASS:
106, Compositions: Coating and Plastic, appropriate
subclasses for nonresinous plastic web or sheet impregnated
with a solid dielectric or liquid dielectric impregnant which
is not claimed in terms of its composition or which is not
claimed or solely disclosed as a dielectric.
162, Paper Making and Fiber Liberation, 103 and 123+ for
multilayer materials, including a layer of paper, which may
be impregnated with another material; subclasses 135+ for a
single layer of paper which may contain a solid dielectric
impregnant or a liquid dielectric impregnant which is not
claimed in terms of its composition or which is not claimed
or solely disclosed as a dielectric; and subclass 138 for a
paper layer having an electrical characteristic.
427, Coating Processes, appropriate subclasses for a method
of impregnating.
428, Stock Material or Miscellaneous Articles, 260 for
fabric impregnated with a solid dielectric or a liquid
dielectric impregnant which is not claimed in terms of its
composition or which is not claimed or solely disclosed as a
dielectric; and subclasses 411+ for a multilayer material
which may have electric insulating properties.
521, Synthetic Resins or Natural Rubbers, 53 for a preformed
porous or cellular synthetic resin impregnated with a solid
dielectric or a liquid dielectric impregnant which is not
claimed in terms of its composition or which is not claimed
or solely disclosed as a dielectric.
Subclass:
570
FLUENT DIELECTRIC:
This subclass is indented under the class definition.
Nonsolid claimed as a nonconductor of electricity.
(1) Note. A nonsolid is a material which, at ambient
temperatures, does not hold its shape without confinement.
Most solid nonmetal compositions ordinarily are electrical
insulators and classification of such construction mateials
on the basis of electrical properties has been found
impractical; therefore, another way of defining "fluent" in
this context is as any composition which cannot be
accommodated in Class 106 or the Class 520 series. A mass of
particulate solids is not considered fluent for purposes of
this subclass, but a "slumpable" nonparticulate material,
e.g., a grease, etc., is considered fluent.
(2) Note. Where a patent claims an electrical device
containing a dielectric, the patent is classified with the
device, no matter how nominal the recitation of the device
may be.
SEE OR SEARCH THIS CLASS, SUBCLASS:
71 for heat exchange, low-freezing or low-pour-point or
hihg-boiling-point compositions, which compositions may have
electrical insulating properties.
500 for nonmetal compositions which, under some or all
circumstances, conduct electricity, including electric
"resistance" elements having a defined conductivity, even
though the conductivity is small.
SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, for normally solid
inorganic, organic nonresinous, and organic natural-resin
solid materials, or materials which solidify upon "setting",
whether described and/or claimed as electric insulators or
not.
174, Electricity: Conductors and Insulators, 8 for such
subject matter which includes a fluid; subclasses 110+ for an
insulated conductor, even when the conductor is only
nominally claimed; and subclasses 137+ for a shaped
insulator.
208, Mineral Oils, Processes and Products, subclass 14 for
electrically insulating compositions, consisting entirely of
mineral oil components.
218, High-Voltage Switches With Arc Preventing and
Extinguishing Devices, 89 for such subject matter having an
interposed nonconductor.
219, Electric Heating, 538 for an insulated electric heating
element.
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, especially 56 and 109+ for methods of making
articles by uniting randomly associated particles.
313, Electric Lamp and Discharge Devices, appropriate
subclasses for such devices containing an insulating
material.
336, Inductor Devices, for electric voltage transformers of
this type, especially subclass 94 for such a device having
fluid insulation.
338, Electrical Resistors, appropriate subclasses for such
subject matter including a dielectric material.
361, Electricity: Electrical Systems and Devices, 301.1 for
a fixed capacitor (condenser) which may include a named
dielectric.
501, Compositions: Ceramic, appropriate subclasses for
ceramic compositions capable of functioning as an electrical
insulator.
508, Solid Antifriction Devices, Materials Therefor,
Lubricant and Separant Compositions for Moving Solid
Surfaces, and Miscellaneous Mineral Oil Compositions,
particularly 110, for lubricants and miscellaneous
compositions containing a mineral oil and a nonhydrocarbon
additive, including compositions claimed as having both
lubricating and electric insulating properties.
520, Synthetic Resins or Natural Rubbers, appropriate
subclasses for a nonfluent composition containing a synthetic
resin or natural rubber which composition has the property of
insulating objects electrically from each other.
523, Synthetic Resins or Natural Rubbers, subclass 173 for a
synthetic resin or natural rubber composition having utility
as a filling or flooding composition for cables or to
processes of preparation thereof.
585, Chemistry of Hydrocarbon Compounds, 6.3 for an
"insulating oil" composition consisting only of hydrocarbons
where at least one of the components is not a mineral oil.
Subclass:
571
Gaseous or gas-containing:
This subclass is indented under subclass 570. Subject matter
wherein the composition is one which has a volume the size of
the container which holds it or is a liquid containing a
defined gaseous component.
SEE OR SEARCH THIS CLASS, SUBCLASS:
372 for miscellaneous gaseous compositions.
SEE OR SEARCH CLASS:
48, Gas: Heating and Illuminating, appropriate subclasses
for gaseous compositions set forth for such uses.
585, Chemistry of Hydrocarbon Compounds, subclass 6 for
gaseous compositions comprising hydrocarbons only.
Subclass:
572
Metal- or insoluble component-containing; e.g., slurry,
grease, etc.:
This subclass is indented under subclass 570. Subject matter
wherein the fluent material contains a metal, a metal
compound or a component which does not dissolve in the fluent
material.
(1) Note. The composition must maintain its fluent
properties that is, its ability to change its shape under a
minimum-stress force, such as gravity.
Subclass:
573
Si-containing:
This subclass is indented under subclass 570. Subject matter
wherein the fluent material contains silicon in elemental or
combined form.
Subclass:
574
B-, P-, S-, Se- or Te-containing:
This subclass is indented under subclass 570. Subject matter
in which a component of the component contains boron,
phosphorus, sulfur, selenium, or tellurium.
Subclass:
575
N-containing:
This subclass is indented under subclass 570. Subject matter
in which a component of the composition contains nitrogen.
Subclass:
576
O in N compound:
This subclass is indented under subclass 575. Subject matter
in which a single discrete compound contains both oxygen and
nitrogen.
(1) Note. Where a component is described as the "reaction
product" of an oxygen-containing material and a
nitrogen-containing material it is assumed that the reaction
product is or contains a compound having both N and O.
Subclass:
577
Nitro or nitroso compound:
This subclass is indented under subclass 576. Subject matter
having the =N=O moiety, characteristic of nitro and nitroso
compounds.
Subclass:
578
O-containing:
This subclass is indented under subclass 570. Subject matter
in which a component of the composition contains oxygen.
Subclass:
579
Carboxylic acid ester:
This subclass is indented under subclass 578. Subject matter
having the group, as illustrated below, characteristic of the
reaction product of a carboxylic acid and an alcohol.
R--O-R'
(1) Note. The ester, e.g., a vegetable oil, may be the
major component of the composition.
Subclass:
580
Halogen-containing:
This subclass is indented under subclass 578. Subject matter
in which a component of the composition contains fluorine,
chlorine, bromine or iodine.
SEE OR SEARCH THIS CLASS, SUBCLASS:
570 and 581, for an electrically insulating fluid which
contains halogen, but not oxygen.
Subclass:
581
Halogenated polycyclic compound-containing:
This subclass is indented under subclass 570. Subject matter
which contains an organic material comprised of more than one
carbocyclic ring, the organic material also containing
fluorine, chlorine, bromine or iodine.
Subclass:
582
LIGHT TRANSMISSION MODIFYING COMPOSITIONS:
This subclass is indented under the class definition.
Compositions used usually in various optical applications
which change light and visible solar radiations (including
infrared and ultraviolet) transmittance properties when
exposed to energy, usually visible radiation.
(1) Note. This subclass includes compositions specialized
for use as optical filters or as coatings which have optical
filtering or as coatings which have optical filtering
properties, as well as optical filters defined solely in
terms of their composition with no claimed significant filter
structure.
(2) Note. Where the filter is claimed in terms of the
composition of which it is composed and also in terms of
significant filter structure, it is classified in the
appropriate class providing for such structure and
cross-referenced to this subclass (582). See the search
notes below.
(3) Note. Where the claimed filter is defined in terms of
only a single material and no significant filter structure is
recited, it is classified in the appropriate class providing
for such material.
SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, 47 for glass
compositions which have optical filtering properties.
204, Chemistry: Electrical and Wave Energy, especially
157.15 for processes making photochromic material (other
than coating) involving chemical reaction brought about by
wave energy.
359, Optics: Systems (Including Communication) and Elements,
350, 885+, and the classes specified in the notes thereto,
for devices which include as part thereof an optical filter
and for optical filters, per se, which are claimed in terms
of significant filter structure.
424, Drug, Bio-Affecting and Body Treating Compositions,
subclass 59 for cosmetic compositions performing a filtering
function, e.g., suntan lotions.
Subclass:
583
Modification caused by energy other than light:
This subclass is indented under subclass 582. Composition
wherein the transmission property change is occasioned by use
of energy other than light, e.g., heat, electricity, etc.
Subclass:
584
Inorganic crystalline solid:
This subclass is indented under subclass 582. Composition in
the form of an inorganic crystalline solid material.
Subclass:
585
Producing polarized light:
This subclass is indented under subclass 582. Composition
which polarize light passing therethrough.
Subclass:
586
Displaying color change:
This subclass is indented under subclass 582. Composition
which modify the transmission property by changing color.
Subclass:
587
Infrared:
This subclass is indented under subclass 582. Composition
which affect the transmission of infrared rays.
Subclass:
588
Ultraviolet:
This subclass is indented under subclass 582. Composition
which affect the transmission of ultraviolet rays.
Subclass:
589
Organic material:
This subclass is indented under subclass 588. Composition
which are organic substances.
Subclass:
600
RADIATION SENSITIVE:
This subclass is indented under the class definition.
Compositions which are designed to be responsive to
radiation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62.3 for barrier device compositions.
62.5 for magnetic compositions.
299 for liquid crystal compositions.
301.1 for radioactive compositions.
301.36 for inorganic luminescent compositions with organic
nonluminescent material.
301.4 for inorganic luminescent compositions.
500 for electrically conductive or emissive compositions.
SEE OR SEARCH CLASS:
430, Radiation Imagery Chemistry: Process, Composition, or
Product Thereof, appropriate subclasses for radiation
sensitive compositions limited to radiation imagery.
501, Compositions: Ceramic, subclass 13 for glass
compositions which are photochromic and for processes of
making such compositions.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art; including those instances when a composition would
otherwise be proper for this subclass (600).
520, Synthetic Resins or Natural Rubbers, appropriate
subclasses for a composition containing a synthetic resin or
natural rubber which is radiation sensitive and which utility
is not provided for in any other class or in any special use
or function area in Class 252.
Subclass:
601
FIRE RETARDING:
This subclass is indented under the class definition.
Compositions specialized and designed for use in treating
materials to make them less combustible or more resistant to
fire.
SEE OR SEARCH THIS CLASS, SUBCLASS:
380 for preservative agents in general.
SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers, 115.5 for use of a
fire-retarding composition to chemically modify a textile or
fiber.
106, Compositions: Coating or Plastic, particularly 15.05
for compositions, e.g., paints or varnishes which when
applied to surfaces, set or harden to form hard tenacious
films, even if such compositions include a fireproofing agent
or are inherently fireproofing.
162, Paper Making and Fiber Liberation, subclass 159 for
fireproofing agent used in the process or product of the
class.
169, Fire Extinguishers, subclass 45 for process of
preventing fire by use of a fire-retarding composition.
424, Drug, Bio-Affecting and Body Treating Compositions,
appropriate subclasses for a biocidal composition which may
also be fireproofing.
427, Coating Processes, appropriate subclasses for coating a
fire-retarding composition and treating the same.
428, Stock Material or Miscellaneous Articles, appropriate
subclasses for a stock material product in the form of a
single or plural layer web or sheet; see especially 276 for
such a product embodying mechanically interengaged strands or
strand portions of a cellulosic material, impregnated with a
phosphorus compound and having fire resistant or retardant
features; and subclass 921 (a cross-reference art collection)
for a product having fire or flame proof features.
520, Synthetic Resins or Natural Rubbers, appropriate areas
for compositions containing synthetic resin or natural rubber
which, when applied to surfaces, set or harden to form hard
tenacious adherent films, even if such compositions include a
fireproofing agent or are inherently fireproofing. See Lines
With Other Classes and Within This Class, for a general
outline of subject matter of the Class 520 series.
Subclass:
602
Having disparate function:
This subclass is indented under subclass 601. Compositions
performing a function other than fire retardation, e.g.,
waterproofing, corrosion resistance, etc.
Subclass:
603
For living matter:
This subclass is indented under subclass 601. Compositions
used to retard the burning of living plant matter, e.g.,
trees, grass, etc.
Subclass:
604
Material physically quantified:
This subclass is indented under subclass 601. Compositions
having material defined by dimensions, crystal structure,
X-ray difraction, etc.
Subclass:
605
Containing a gas:
This subclass is indented under subclass 601. Compositions
having a nonliquid fluid as a part thereof.
Subclass:
606
Intumescent:
This subclass is indented under subclass 601. Compositions
which swell under heat or direct flame to produce a
puffed-up, nonglowing insulating cellular mass which
insulates the substrate from the heat source and at the same
time excludes oxygen.
Subclass:
607
For wood or cellulosic material other than textile:
This subclass is indented under subclass 601. Compositions
designed to be used with wood or cellulosic matter other than
textile.
SEE OR SEARCH THIS CLASS, SUBCLASS:
608 for cellulosic textiles.
609 for solid synthetic polymers and reactants thereof.
Subclass:
608
For textile (i.e., woven material:
This subclass is indented under subclass 601. Compositions
for rendering woven material fire retardant.
Subclass:
609
For solid synthetic polymer and reactants thereof:
This subclass is indented under subclass 601. Compositions
designed for use with solid synthetic polymers and reactants
of the same.
Subclass:
610
For dispersion or collodial system:
This subclass is indented under subclass 601. Compositions
comprising systems of minute particles distinct and separate
from one another and suspended in a medium.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
611
For dispersion or collodial system:
This subclass is indented under subclass 610. Compositions
designed to be incorporated into a dispersion or collodial
system.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
625
RADIOACTIVE COMPOSITIONS:
This subclass is indented under the class definition.
Compositions s which contain a substance which is
spontaneously radioactive and processes pertaining to same.
SEE OR SEARCH THIS CLASS, SUBCLASS:
505 and 517, for conductive or emissive compositions
containing radioactive matter and electrical devices defined
only in terms of their composition.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, 84 for processes of preparing
radioactive and actinide series metals; subclass 235 for a
composition having a continuous phase of free metal made by
consolidating metal particles and having an oxide of
aluminum, a Group IIA, IIIB or Group IVB metal; and subclass
84.1 for such composition having a base of a transition
metal.
148, Metal Treatment, subclass 560 for processes of
significant heating of solid or semi-solid actinide or
trans-actinide metal to modify or maintain the internal
physical structure (i.e., microstructure) or chemical
property of the metal.
164, Metal Founding, subclass 450.2 for a metal casting
apparatus having control means influenced by a radioactive
sensor and which may include a radioactive source.
250, Radiant Energy, 303 for radioactive tracer processes;
subclass 308 for the inspection of solids or liquids by
radioactive charged particles; subclass 379 for electric
signalling devices including a radioactive gas or gas-borne
radioactive particles or a radioactive source; subclass 384
for gas discharge signalling devices responsive to radiation
from radioactive sources; subclasses 462.1+ for self-luminous
articles; and subclasses 493.1+ for radiant energy generation
and sources, including subclasses 496.1+ for contained
radioactive sources.
313, Electric Lamp and Discharge Devices, subclass 54 for
electrical lamps and electric space discharge devices (e.g.,
radio tubes) which include a radioactive substance as a part
thereof.
376, Induced Nuclear Reactions: Processes, Systems, and
Elements, appropriate subclasses for the production of
radioactive compositions by irradiation.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, subclass 159 for
apparatus for radioactive reactant or product.
423, Chemistry of Inorganic Compounds, 2 and 249+ for
radioactive compounds, per se, including manufacturing
processes involving a chemical reaction.
424, Drug, Bio-Affecting and Body Treating Compositions, 1.11
for class defined compositions and methods comprising a
radionuclide or intended radionuclide (e.g., in vivo
testing).
427, Coating Processes, subclass 5 and 6 for coated articles
containing a radioactive material.
428, Stock Material or Miscellaneous Articles, 411 for
composite web or sheet characterized merely by composition,
one of which layers may contain radioactive material.
976, Nuclear Technology, D277, Dig. 375+, and Dig. 403+, for
an alternative search based on a modification of the European
Patent Office Classification.
Subclass:
634
In form of sol solution or gel:
This subclass is indented under subclass 625. Subject matter
comprising an aqueous or organic liquid containing dissolved
or dispersed radioactive matter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
302 for nonradioactive colloids.
637 particularly 640, for nuclear reactor fuel material
dissolved or dispersed in a nonaqueous, nonorganic liquid,
i.e., liquid metal.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
635
Including production of solid particles by chemical
reaction:
This subclass is indented under subclass 634. Subject matter
wherein the liquid is treated by a process which includes a
chemical reaction, other than simple precipitation, to
produce a solid particle.
SEE OR SEARCH CLASS:
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, subclass 0.5 for forming radioactive materials by
physical processes.
Subclass:
636
Nuclear reactor fuel:
This subclass is indented under subclass 625. Subject matter
used as a fuel for a nuclear reactor including thermonuclear
(fusion) reactors.
SEE OR SEARCH THIS CLASS, SUBCLASS:
634 for aqueous or organic sols or solutions suitable for
use as a nuclear reactor fuel.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, 84.1 for pyrometallurgy of
actinide and transactinide elements.
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, for methods of shaping or nonchemical reactive
treating of radioactive material.
376, Induced Nuclear Reactions: Processes, Systems, and
Elements, for nuclear reactor fuel defined by structure.
423, Chemistry of Inorgainc Compounds, 249 for actinide
compounds useful as a nuclear reactor fuel.
427, Coating Processes, subclass 6 for coating nuclear fuel
elements.
Subclass:
637
Actinide having nonactinide component:
This subclass is indented under subclass 636. Compositions
containing an actinide containing component and a nonactinide
component.
(1) Note. In this and indented subclasses, burnable poisons
are classified by the form in which they appear in the final
product.
SEE OR SEARCH THIS CLASS, SUBCLASS:
638 for boron oxide.
640 for metal borides.
Subclass:
638
Oxide component:
Compositions under subclss 637 wherein the nonactinide
containing component is an inorganic oxide.
SEE OR SEARCH THIS CLASS, SUBCLASS:
639 for nuclear reactor fuel composition containing an
actinide component and an organic oxygen containing
compound.
Subclass:
639
Carbon containing component:
This subclass is indented under subclass 637. Compositions
wherein the nonactinide element containing component contains
carbon, including elemental carbon, inorganic carbides, and
organic compounds.
Subclass:
640
Free metal or metal compound component:
This subclass is indented under subclass 637. Compositions
wherein the nonactinide element containing component is a
free metal or a metal compound.
SEE OR SEARCH THIS CLASS, SUBCLASS:
638 for nuclear reactor fuel having metallic oxide including
ceramic material.
639 for nuclear reactor fuel having a metallic carbide.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures, 201 for cermet nuclear reactor
fuels.
Subclass:
641
Actinide nitrides only:
This subclass is indented under subclass 636. Compositions
in which the nuclear fuel contains only nitrides of plural
actinide elements.
SEE OR SEARCH THIS CLASS, SUBCLASS:
637 for nuclear reactor fuels containing actinide
oxynitrides or carbonitrides.
SEE OR SEARCH CLASS:
423, Chemistry of Inorgainc Compounds, 249 for actinide
nitrides, per se.
Subclass:
642
Actinide carbides only:
This subclass is indented under subclass 636. Compositions
wherein the nuclear reactor fuel contains only carbides of
plural actinide elements.
SEE OR SEARCH THIS CLASS, SUBCLASS:
637 for nuclear reactor fuels containing actinide
oxycarbides or carbonitrides.
SEE OR SEARCH CLASS:
423, Chemistry of Inorganic Compounds, 249 for actinide
carbides, per se.
Subclass:
643
Actinide oxides only:
This subclass is indented under subclass 636. Compositions
wherein the nuclear fuel consists only of oxides of plural
actinide elements.
SEE OR SEARCH THIS CLASS, SUBCLASS:
637 for nuclear fuels containing actinides oxycarbides or
oxynitrides.
SEE OR SEARCH CLASS:
423, Chemistry of Inorganic Compounds, 260 for uranium
oxides.
Subclass:
644
As a source of radiation or heat:
This subclass is indented under subclass 625. Compositions
undre ... which are used as a source of alpha, beta, or
gamma rays, and neutron or electron beams, all of which may
be used for the heat generated by the same.
SEE OR SEARCH CLASS:
250, Radiant Energy, 492 for radiation sources with definite
claimed structure, and see the search notes thereunder.
Subclass:
645
For tracing, tagging, or testing:
This subclass is indented under subclass 644. Compositions
adapted to mark, label, etc., that to which it is added, in
such a manner that the radioactive component may be (a)
detected over a period of time or through a system, and (b)
used as means of performing a measurement, indication, etc.,
and the marked or labelled composition.
SEE OR SEARCH CLASS:
250, Radiant Energy, 253 for geological testing or
irradiation; subclasses 302+ for radiation trace methods;
subclass 308 for inspection of solids or liquids by charged
radioactive materials; and subclass 432 for parent daughter
isotopes.
423, Chemistry of Inorganic Compounds, subclass 230 for
analytical and analytical control processes involving
measurements of radioactivity or isotope distribution.
424, Drug, Bio-Affecting and Body Treating Compositions, 1.11
for class defined compositions and methods comprising a
radionuclide or intended radionuclide (e.g., in vivo
testing).
600, Surgery, 407 for diagnostic testing involving detection
of nuclear radiation.
Subclass:
646
Luminescent:
This subclass is indented under subclass 625. Subject matter
containing matter having the property of emitting light or
analogous rays as a result of irradiation by wave energy
radiated by some other source.
SEE OR SEARCH THIS CLASS, SUBCLASS:
301.16 301.36 and 301.4+, for fluorescent or phophorescent
compositions.
644 for compositions which emit nonvisible or high energy
rays.
Subclass:
647
Laser:
This subclass is indented under subclass 646. Subject matter
used in a laser apparatus or process.
Subclass:
700
CHEMILUMINESCENT:
Compositions which contain a mixture or association of two or
more substances chosen for eventual chemical interaction
thereof to produce chemiluminescence, substances peculiar
thereto, and processes of making the same.
CROSS-REFERENCE ART COLLECTIONS
Subclass:
950
Cross-reference collection directed to materials which supply
a foreign substance for incorporation, in very minor,
"impurity" amounts, in an element, compound or composition to
impart a desired property thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62.3 for barrier layer device compositions and processes for
making them, which processes usually include doping.
SEE OR SEARCH CLASS:
206, Special Receptacle or Package, 524 for a package
containing a chemical.
420, Alloys or Metallic Compositions, subclass 590 for
general processes of preparing alloys.
438, Semiconductor Device Manufacturing: Process, 542 for
processes of diffusing a conductivity modifying dopant into a
semiconductor region.
Subclass:
951
This subclass is indented under subclass 950. Materials
designed for conveying the foreign substance as a gas or
vapor or entrained in a gas vapor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
181.1 for getters or gas vapor generating materials for
electric lamps, electric space discharge devices and similar
devices.
Subclass:
960
SURFACE FLAW DETECTING COMPOSITIONS:
Art collection related to compositions used for detecting
surface cracks or roughness.
Subclass:
961
STRESS OR CONTACT INDICATORS:
Art collection relating to compositions for indicating
physical stress or physical contact.
Subclass:
962
TEMPERATURE OR THERMAL HISTORY:
Art collection relating to compositions for indicating
temperature or thermal history.
Subclass:
963
HUMIDITY OR MOISTURE INDICATORS:
Art collection relating to compositions indicating water.
Subclass:
964
LEAK DETECTION:
Art collection of material related to physical indication of
leaks.
Subclass:
965
RETROSPECTIVE PRODUCT IDENTIFICATION (E.G., TAGS AND TRACERS,
ETC.):
This subclass is indented under the class definition. Art
collection providing information about the source or the ...
drawn to rheo-casting.
FOREIGN ART COLLECTIONS
The definitions for FOR 100-FOR 104, FOR 113, and FOR 247-FOR
250 below correspond to the definitions for only the
following abolished subclasses under Class 252 from which
these collections were formed: 8.6, 8.7, 8.75, 8.8, 8.9, 88,
and 367-370. See the Foreign Art Collection schedule for
specific correspondences. {Note: The titles and definitions
for indented art collections include all the details of the
one(s) that are hierarchically superior.}
Subclass: FOR 100
Foreign Art Collections including compositions for treating
textile materials not more specifically provided for
elsewhere, such as, for example, compositions for oiling or
lubricating, rendering antistatic, softening, and
silk-soaking, excepting detergent, bleaching and mere wetting
compositions.
Subclass: FOR 101
Foreign Art Collections including compositions which comprise
organic compounds containing a sulfoxy group, i.e., a radical
containing sulfur bonded to at least one oxygen.
Subclass: FOR 102
Foreign Art Collections including compositions which also
contain an amine or amide group.
Subclass: FOR 103
Foreign Art Collections including compositions which comprise
organic compounds containing an amine or amide group.
Subclass: FOR 104
Foreign Art Collections including compositions which comprise
organic compounds containing an ether group, i.e., having the
type formula R-O-R.
Subclass: FOR 113
Foreign Art Collections including compositions specialized
and designed for, or peculiar to, use in sweeping, or which
are adapted to take up, lay or collect dust or other
particulate matter by adherence.
Subclass: FOR 247
Foreign Art Collections including compositions which contain
alkali-metal salts of water-insoluble fatty or rosin
(abietic) acids or processes of making such salts.
Subclass: FOR 248
Foreign Art Collections including products under this
hierarchy.
Subclass: FOR 249
Foreign Art Collections including processes which include
saponification.
Information Products Division -- Contacts
Questions regarding this report should be directed to:
U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231
tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov
Last Modified: 6 October 2000