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 071
CHEMISTRY: FERTILIZERS
Class Definition:
This class is directed to methods of production and
manufacture of substances having a nutrient action on plant
growth. It also includes the products of such methods and
compositions or mixtures having these characteristics, and
forms of chemical compounds or mixtures peculiarly adapted
and designed to make them more available for use and
distribution as a fertilizer.
(1) Note. Fertilizers admixed with preserving agents are in
this class. See the class definitions of appropriate
compound and composition classes for the classification of
preservative additives.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
See References to Other Classes, below, for apparatus for
making fertilizers not specifically provided for in other
classes.
See References to Other Classes, below, for drying processes,
per se, and for processes for contacting solids with gases or
vapors not restricted to fertilizer manufacture.
This class (71) includes, in subclasses 5+ and below
processes of applying a specific fertilizer composition to
plants or soil. Those processes which do not involve the
application of a specific composition are classified in the
appropriate class of which Class 47 is the generic class; see
the definition and notes of that class for the line with the
other classes. Processes which include some manipulation of
the soil are classified in Classes 47, 111, or 172 in
accordance with the line between those classes. Plant pots
or molds made of fertilizer material and mulching sheets
which are made of or compose a fertilizer ingredient are in
Class 47. Compositions of seeds and fertilizer are in Class
71.
See Class 426, Food or Edible Material: Processes,
Compositions, and Products, appropriate subclasses for animal
foods. If a composition (product) is usable either as an
animal food or a plant food, it is classifiable in Class 426
and cross referenced to Class 71.
See Class 504, Plant Protecting and Regulating Compositions,
for compositions and compounds for treating living
terrestrial and aquatic plants or their habitats for the
purpose of stimulating, inhibiting or retarding growth,
defoliating, or killing said plants, and the processes of
using such compositions or compounds for such purposes which
are not more than their mere application to the plant or
habitat. Compositions disclosed as having unequivocal
fertilizer value in addition to biocidal or deodorant value
are in Class 504 and cross-referenced to Class 424 or 514.
Class 504 specifically provides for algicidal compositions.
Only those compositions which alter the plant through a
chemical modification of the plant metabolism such as auxins
are included in Class 504. The line between a chemical which
causes a plant metabolism response and a fertilizer or plant
food is somewhat difficult, but for purposes of this class
the following applies: (1) compositions having only a
fertilizing affect and (2) compositions which are disclosed
as having both a stimulating and fertilizing action and
wherein the composition taken as a whole merely exhibits its
stimulating affect as a response to the fertilizing action
and wherein no disclosure is made as to the specific
response, except for general statements as to "stimulating
and fertilizing affects", are not in Class 504, but may be
found in the appropriate fertilizer subclass in Class 71.
Compositions which include a plant stimulant as well as a
fertilizer or biocide (insecticide, fungicide, etc..) are
classified in Class 504.
Compositions which are added to prevent or cure mineral or
plant food deficiencies are excluded from Class 504. For
example, the addition of iron chelates to cure or prevent
iron chlorosis are found in the appropriate subclass of Class
71.
See Class 210, Liquid Purification or Separation, appropriate
subclasses, particularly subclasses 601+ for processes for
the treatment of sewage to separate solids and liquids and
purify or dry the same. If other treatment, beyond
separation, purifying or drying, is included, which is
directed to improving the character as a fertilizer, see this
class (71).
The rules for determining Class placement of the Original
Reference (OR) for claimed chemical compositions are set
forth in the Class Definition of Class 252 in the section
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS, subsection
COMPOSITION CLASS SUPERIORITY, which includes a hierarchical
ORDER OF SUPERIORITY FOR COMPOSITIONS CLASSES.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
34, Drying and Gas or Vapor Contact With Solids, for drying
processes, per se, and for processes for contacting solids
with gases or vapors not restricted to fertilizer
manufacture.
100, Presses, subclasses 35+ for methods of pressing not
elsewhere provided for.
209, Classifying, Separating, and Assorting Solids,
appropriate subclasses for flotation processes of
concentrating mineral, such as crude phosphate, to give an
improved fertilizer..
204, Chemistry: Electrical and Wave Energy, for electrical or
wave energy methods involving chemical reactions which are
caused by more than the mere thermal effects of the
electrical or wave energy for the preparation of compounds or
elements useful for fertilizer compositions, see Class.
210, Liquid Purification or Separation, appropriate
subclasses, particularly subclasses 601+ for processes for
the treatment of sewage to separate solids and liquids and
purify or dry the same. If other treatment, beyond
separation, purifying or drying, is included, which is
directed to improving the character as a fertilizer, see this
class (71).
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, for apparatus for
making fertilizers not specifically provided for in other
classes.
423, Chemistry of Inorganic Compounds, subclasses 265+ for
inorganic compounds with additives and see the notes thereto
for the general line between Class 423 and composition
classes.
435, Chemistry: Molecular Biology and Microbiology, for
making, separating, or purifying substances by processes that
include fermentations; for processes of making or treating
living organisms, enzymes, or ferments; and for compositions
or apparatus for use in such processes.
504, Plant Protecting and Regulating Compositions, for
compositions and compounds for treating living terrestrial
and aquatic plants or their habitats for the purpose of
stimulating, inhibiting or retarding growth, defoliating, or
killing said plants, and the processes of using such
compositions or compounds for such purposes which are not
more than their mere application to the plant or habitat.
Compositions disclosed as having unequivocal fertilizer value
in addition to biocidal or deodorant value are in Class 504
and cross-referenced to Class 424 or 514. Class 504
specifically provides for algicidal compositions in
subclasses 150+, stunting and dwarfing compositions in
subclasses 174+, and sucker control compositions in
subclasses 184+.
520, Synthetic Resins or Natural Rubbers, appropriate
subclasses, particularly Class 523, subclass 122 for a
composition containing a synthetic resin or natural rubber
and an ingredient which prevents the commencement of biocidal
deterioration from fungi, bacteria, or other organisms of the
resin and which does not include a fertilizer; subclasses
124+ for a composition containing a synthetic resin or
natural rubber which is claimed or solely disclosed as having
enhanced degradability by exposure to an environmental
stimulus; and subclasses 132+ for a composition containing a
synthetic resin having utility in situ as a soil conditioner
or stabilizer or to processes of preparing said composition.
SUBCLASSES
Subclass:
1
This subclass is indented under the class definition. All
processes and products which are not provided for in the
following subclasses.
SEE OR SEARCH CLASS:
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, appropriate
subclasses for fertilizer producing apparatus not
specifically provided for in other classes.
Subclass:
5
Products of special value in the cultivation of fungi, such
as mushrooms, and processes of making them.
(1) Note. If the claims include the mycellium or spawn, the
patent is classified in Class 47, Plant Husbandry, and
cross-referenced here.
SEE OR SEARCH CLASS:
435, Chemistry: Molecular Biology and Microbiology,
particularly subclasses 254.1-256.8 for subject matter
directed to a composition having utility as a fungal culture
medium (i.e., media for maintenance, growth, production,
etc..) or a technique for preparing or using the same.
Subclass:
6
This subclass and those indented hereunder include fertilizer
products and the methods of making them, which involve the
use and action of enzymes or bacteria.
Subclass:
7
This subclass is indented under subclass 6. Methods and
compositions where nitrogen fixing or nitrifying bacteria is
utilized.
Subclass:
8
This subclass is indented under subclass 6. Processes
directed to autogenous fermentation or decomposition and the
products of such processes.
Subclass:
9
This subclass is indented under subclass 8. Processes and
compositions where the fermentation is aerobic.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, subclasses 601+,
especially 604, 605, 615+, and 620+ for aerobic treatment of
sewage.
Subclass:
10
This subclass is indented under subclass 8. Processes and
compositions where the fermentation is anaerobic.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, subclasses 601+
especially 605 and 630 for anaerobic treatment of sewage.
Subclass:
11
Methods of making organic containing fertilizers and
corresponding products. In this subclass inorganic values
may or may not be included.
Subclass:
12
Processes of preparing fertilizer from sewage or night soil,
and the corresponding products.
SEE OR SEARCH THIS CLASS, SUBCLASS:
13 if other organic fertilizer materials are included.
Subclass:
13
This subclass is indented under subclass 12. Patents in which
other organic substances of fertilizer value are included.
If such added organic values are hereinbelow listed, they are
cross-referenced below.
Subclass:
14
Processes of preparing fertilizer from garbage and
corresponding products. If other organic values, such as
those listed below, are present, they are cross-referenced
below.
Subclass:
15
Processes for preparing fertilizer and corresponding
products, not hereinabove classified, which include animal
matter not listed among any of the indented types below or
which include a plurality of the said indented types.
SEE OR SEARCH THIS CLASS, SUBCLASS:
22 if including organic fertilizer other than animal
matter.
Subclass:
16
This subclass is indented under subclass 15. Inventions in
which the marine animal matter is the only type of animal
matter present; other organic fertilizer values, except other
animal derivatives, such as are classified below, may also be
included.
Subclass:
17
Animal matter from blood is the only type of animal matter
present; other organic fertilizer values, except other animal
derivatives such as are classified below may also be
included.
Subclass:
18
This subclass is indented under subclass 15. and including
animal matter derived from horn, hair, feathers, wool,
leather, etc..; other organic fertilizer values except other
animal derivatives such as are classified below, may also be
included.
Subclass:
19
This subclass is indented under subclass 15. and including
animal matter derived from bone as the only type of animal
matter present.
Subclass:
20
This subclass is indented under subclass 19. Processes and
products which include other organic fertilizer values except
other animal derivatives such as are classified below.
Subclass:
21
This subclass is indented under subclass 15. and including
guano and animal excretions, generally, as the only types of
animal matter present. Other organic fertilizer values,
except animal matter such as classified below, may also be
present.
Subclass:
22
This subclass is indented under subclass 15. Processes and
products which include other organic values such as are
classified hereinbelow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
13 20.
Subclass:
23
This subclass is indented under subclass 11. Processes and
products, of preparing fertilizers from vegetable material;
other organic values such as classified hereinbelow may also
be present.
Subclass:
24
This subclass is indented under subclass 23. Processes and
products which include humus material, peat, lignite, coal
and carbon. Other organic fertilizer values classifiable
below may also be present.
Subclass:
25
This subclass is indented under subclass 11. Processes and
products which include industrial wastes. Industrial wastes,
within the meaning of this subclass, include ashes, cinders,
paper, flue dust, waste liquors from paper manufacture,
tanning liquors, corn steep liquors, gas liquor, etc..; in
brief, any substance of organic origin ordinarily considered
a waste material resulting from an industrial process and not
provided for above. Other organic fertilizer values, such as
classified hereinbelow, may also be present.
SEE OR SEARCH THIS CLASS, SUBCLASS:
42 43, for gas liquors used in alkaline treatment or
neutralization of phosphates.
Subclass:
26
This subclass is indented under subclass 25. Processes and
products in which the industrial waste is from sugar
manufacture or distillery wastes. The use of sugar is also
included. Other organic fertilizer values, such as
classified hereinbelow or not otherwise provided for, may
also be included.
Subclass:
27
This subclass is indented under subclass 11. Processes which
include preparing synthetic organic fertilizers and the
corresponding products.
SEE OR SEARCH CLASS:
204, Chemistry: Electrical and Wave Energy, for electrical or
wave energy methods involving chemical reactions which are
caused by more than the mere thermal effects of the
electrical or wave energy for synthetic preparation of
compounds or elements useful for fertilizer compositions.
205, Electrolysis: Processes, Compositions Used Therein, and
Methods of Preparing the Compositions, subclasses 334+ for
electrolytic synthesis of compounds or elements useful for
fertilizer compositions.
Subclass:
28
This subclass is indented under subclass 27. Processes in
which the organic fertilizer contains urea or one of its
derivatives, and corresponding products.
Subclass:
29
This subclass is indented under subclass 28. Processes and
products which include inorganic P containing substances,
such as phosphates.
Subclass:
30
This subclass is indented under subclass 28. Processes or
products which include inorganic N containing substances,
other than NH4, such as nitrates. Thus, fertilizers
containing urea admixed with a nitrate and urea nitrate both
belong in this subclass.
Subclass:
31
Methods of making fertilizer containing only inorganic
materials and the corresponding products, when not provided
for in any of the indented subclasses.
Subclass:
32
This subclass is indented under subclass 31. Methods and
products in which the fertilizer contains P.
Subclass:
33
This subclass is indented under subclass 32. Methods directed
to the preparation of inorganic fertilizers containing
phosphates.
(1) Note. Subclasses 33-47 are primarily process subclasses
but include products corresponding thereto when such are
claimed along with the processes, in which case the products
are cross-referenced to subclass 48 and indented subclasses.
Subclass:
34
This subclass is indented under subclass 33. Methods directed
to the preparation of inorganic fertilizers containing alkali
metal or ammonium phosphates as the only phosphates present.
Subclass:
35
This subclass is indented under subclass 34. Processes, which
also include inorganic N containing values, other than NH4.
Subclass:
36
This subclass is indented under subclass 34. Processes, which
include an added inorganic alkali metal or ammonium
compound.
Subclass:
37
Methods of preparing phosphatic fertilizers where the
starting materials are treated with an acid or a mixture of
acids.
(1) Note. Methods employing mixtures of acids which are
separately provided for hereunder are included in this
subclass, e.g., a mixture of sulfuric and phosphoric acids.
Subclass:
38
This subclass is indented under subclass 37. Processes
wherein the acid is supplied in the gaseous state.
Subclass:
39
This subclass is indented under subclass 37. Processes
wherein the acid supplied is HNO3 or HCl mixed in the liquid
state.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37 for HNO3 or HCl mixed with another acid.
Subclass:
40
This subclass is indented under subclass 37. Processes
wherein the acid used in H2SO4.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37 for H2SO4 mixed with another acid.
38 for treatment with sulphuric acid anhydride.
Subclass:
41
This subclass is indented under subclass 37. Processes
wherein the acid used is an acid of phosphorus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37 for an acid of phosphorus mixed with another acid, see
this class.
Subclass:
42
This subclass is indented under subclass 33. Methods of
preparing phosphate containing fertilizers wherein the
starting materials are treated with a distinctly alkaline
substance such as the alkali metal oxides, hydroxides and
carbonates or the alkaline earth metal oxides or hydroxides.
SEE OR SEARCH THIS CLASS, SUBCLASS:
43 for mere neutralization of an acid fertilizer.
subclasses 44+ for distinctively high temperature
treatment.
Subclass:
43
This subclass is indented under subclass 33. Methods directed
to the neutralization of an acidic or basic material by
treatment with a reagent which will accomplish the
neutralization.
Subclass:
44
This subclass is indented under subclass 33. Methods of
preparing phosphate containing fertilizers wherein the raw
materials are subjected to a heat treatment, usually a high
temperature heat treatment which is the essential or
dominating feature of the process. Thus, the heat treatment
of phosphate rock alone or in the presence of an inorganic
substance at white, red or fusion heat temperatures, belongs
here, irrespective of whether or not the substance is
distinctly alkaline.
Subclass:
45
This subclass is indented under subclass 44. Processes
wherein both alkali metal and silicon values are present at
some stage of the process; other inorganic compounds may also
be present. The preponderance of patents in this subclass
apply the heat treatment in the presence of the alkali metal
and silicon values.
Subclass:
46
This subclass is indented under subclass 45. Processes
wherein Si values are not present.
Subclass:
47
This subclass is indented under subclass 44. Processes
wherein carbonates, oxides, sulphates, halides or silicon
values, one or more, are present at some stage of the
process. As in the preceding heat treatment subclasses, the
added values are ordinarily present during the heat
treatment.
Subclass:
48
This subclass includes all patents directed to a phosphate
containing fertilizer.
Subclass:
49
This subclass is indented under subclass 48. Products which
contain also inorganic N values, other than or in addition to
NH4.
SEE OR SEARCH THIS CLASS, SUBCLASS:
51 for products wherein the only inorganic N value is NH4.
Subclass:
50
This subclass is indented under subclass 42. Products which
contain also inorganic nitrates.
SEE OR SEARCH THIS CLASS, SUBCLASS:
33 37-47, for processes.
Subclass:
51
This subclass is indented under subclass 48. Products which
contain also inorganic alkali metal or ammonium compounds.
SEE OR SEARCH THIS CLASS, SUBCLASS:
45 46.
Subclass:
52
This subclass is indented under subclass 48. Products which
contain also inorganic silicon values.
SEE OR SEARCH THIS CLASS, SUBCLASS:
45 47.
Subclass:
53
This subclass is indented under subclass 48. Products which
contain also inorganic carbonates, oxides, sulphates, or
halides, not hereinabove provided for.
SEE OR SEARCH THIS CLASS, SUBCLASS:
47.
Subclass:
54
This subclass is indented under subclass 31. Methods directed
to the preparation of inorganic fertilizers containing N
values other than or in addition to NH4 and products
corresponding to these methods.
Subclass:
55
This subclass is indented under subclass 54. Methods and
products in which the N value is a cyanamide or a derivative
thereof.
Subclass:
56
This subclass is indented under subclass 55. Methods and
products which include in addition to cyanamide another
inorganic N value (except NH4 values only), such as
nitrates.
Subclass:
57
This subclass is indented under subclass 55. Methods and
products which include in addition to cyanamide, inorganic
alkali metal or ammonium values.
Subclass:
58
This subclass is indented under subclass 54. Processes
directed to the preparation of an inorganic fertilizer
containing nitrates and corresponding products.
Subclass:
59
This subclass is indented under subclass 58. Processes and
products which include, additionally, alkali metal or
ammonium values.
Subclass:
60
This subclass is indented under subclass 58. Processes and
products which include, additionally, carbonates, oxides,
sulphates or halides, one or more.
Subclass:
61
This subclass is indented under subclass 31. Processes and
products directed to the preparation of inorganic fertilizers
containing alkali metal or ammonium values.
Subclass:
62
This subclass is indented under subclass 31. Processes and
products directed to the preparation of inorganic fertilizers
containing Si values; slags not provided for above are herein
classified.
Subclass:
63
This subclass is indented under subclass 31. Processes and
products directed to the preparation of inorganic fertilizers
containing carbonates, oxides, sulphates or halides; shells,
such as oyster shells, are herein classified.
Subclass:
64.01
Forms or conditioning:
This subclass is indented under subclass 1. Processes not
hereinabove provided for, directed to the preparation of
fertilizers in commercial forms.
(1) Note. The fertilizer forms, as articles of manufacture,
also belong here. Methods directed to the conditioning of
fertilizer values, such as obviating hygroscopicity,
granulating, or rendering a fertilizer friable (as by
quenching) are also classified herein.
SEE OR SEARCH CLASS:
47, Plant Husbandry, for structures formed of or containing
fertilizers, such as flower pots, stakes and mulching sheets,
utilized in plant husbandry, and fertilizing cartridges
adapted to be buried in the earth.
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, for processes of comminuting or granulating a
liquid or molten substance are classified in subclasses 5+,
even though the granulated substance is claimed as a
fertilizer. Processes of granulating a mixture of reagents
to give a fertilizer composition are in this class (71), in
the subclass determinative of the composition.
206, Special Receptacle or Package, subclass 524.1 for a
container with specified material for content or receptacle,
particularly subclass 524.5 for a container with caustic
content.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, for colloid systems or agents for such systems or
making or stabilizing such systems or agents, especially
subclasses 20+ for organic continuous liquid phase,
subclasses 38+ for bituminous, coal, or Carbon suspended in
aqueous continuous phase, subclasses 77+ for colloid systems
of colloid-sized solid phase dispersed in aqueous continuous
liquid phase; in each instance, when generically claimed or
when there is no hierarchically superior provision in the
USPC for the specifically claimed art.
Subclass:
64.02
Coating and granulating:
This subclass is indented under subclass 64.01. Subject
matter including the steps of covering and making the
material finer or vice versa.
SEE OR SEARCH THIS CLASS, SUBCLASS:
64.03 for granulating processes.
64.07 for coating processes.
64.11 and 64.12, for coated products.
Subclass:
64.03
Granulating:
This subclass is indented under subclass 64.01. Subject
matter for forming the material into granules or grains.
Subclass:
64.04
By comminuting:
This subclass is indented under subclass 64.03. Subject
matter wherein the material is broken into small pieces.
Subclass:
64.05
By agglomerating:
This subclass is indented under subclass 64.03. Subject
matter wherein the material is collected or gathered into a
mass, e.g., formed into increasing larger balls as by
rolling, etc..
Subclass:
64.06
By fluid contact:
This subclass is indented under subclass 64.03. Subject
matter wherein the material is formed into particles upon
being contacted by a gas or liquid.
Subclass:
64.07
Coating:
This subclass is indented under subclass 64.01. Subject
matter wherein the material is covered with a material.
Subclass:
64.08
Slurry or suspension:
This subclass is indented under subclass 64.01. Subject
matter wherein the material is in the form of a slurry, i.e.,
a thin watery mixture of a fine insoluble material or a
suspension or a condition of a substance whose particles are
dispersed through a fluid but not dissolved in it.
Subclass:
64.09
Gel:
This subclass is indented under subclass 64.01. Subject
matter wherein the material is in the form of a gel, i.e., a
jellylike substance formed by coagulation of a colloidal
solution into a solid phase.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, subclasses 98+ for continuous or semicontinuous
solid phase (gels, pastes), 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:
64.1
Liquid:
This subclass is indented under subclass 64.01. Subject
matter wherein the material is in the form of a nongaseous
fluid.
Subclass:
64.11
Controlled release:
This subclass is indented under subclass 64.01. Subject
matter wherein the material is released to the environment in
which it is placed in a regulated manner.
SEE OR SEARCH THIS CLASS, SUBCLASS:
64.07 for the process of coating material of this kind.
Subclass:
64.12
Anticaking:
This subclass is indented under subclass 64.01. Subject
matter wherein the material is treated to prevent it from
clumping, sticking together, etc..
SEE OR SEARCH THIS CLASS, SUBCLASS:
64.07 for the process of coating materials of this kind.
Subclass:
64.13
Forms having structure, e.g., particle size, dimensions,
etc.:
This subclass is indented under subclass 64.01. Subject
matter which has structure (apparatus) or includes particle
size, dimensions, etc.., of the material.
CROSS-REFERENCE ART COLLECTIONS
Subclass:
900
FOAMS:
Art collection involving the material in the form of a
foamlike matter.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, subclasses 10+ for discontinuous gas or vapor
phase in continuous liquid phase 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:
901
REFUSE CONDITIONING:
Art collection involving the treatment of waste material to
enhance its fertilizer value.
Subclass:
902
NITRIFICATION INHIBITION:
Art collection involving the prevention of the nitrification
or denitrification activity of growth media bacteria.
Subclass:
903
SOIL CONDITIONER:
Art collection involving material having values which treat
the soil other than providing nutriments for plants.
SEE OR SEARCH CLASS:
405, Hydraulic and Earth Engineering, subclass 263 for
chemical earth treatment or control.
Subclass:
904
CARRIER:
Art collection involving material which serves as a substrate
for the plant nutriments.
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