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CLASS 252,	COMPOSITIONS
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SECTION I - 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.

SECTION II - 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.

SECTION III - SUBCLASS REFERENCES TO THE CURRENT CLASS

SEE OR SEARCH THIS CLASS, SUBCLASS:

SECTION IV - REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:

SUBCLASSES

1	MISCELLANEOUS (E.G., ARTIFICIAL SNOW):
	This subclass is indented under the class definition.  Compositions for which there is no provision elsewhere in this class (e.g., artificial snow).

2	FIRE-EXTINGUISHING:
	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.

3	Foam or gas phase containing:
	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,   subclasses 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.

4	Gas generative, chemically:
	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.

5	Dry, combustion type:
	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.

6	Low temperature chemically interreactive:
	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,   subclasses 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.

6.5	Foam-stabilizant or colloid-stabilizant containing:
	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,   subclasses 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.

7	Carbonates or ammonium salts containing or pyrolytic:
	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.

8	Carbonates or ammonium salts containing or pyrolytic:
	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,   subclasses 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.

8.05	Foam-stabilizant or colloid-stabilizant containing:
	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,   subclasses 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.

8.57	LEATHER OR FUR TREATING (OTHER THAN CLEANING COMPOSITIONS OR AUXILIARY COMPOSITIONS FOR CLEANING):
	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,   subclasses 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.

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 subclasses 224+ and 357+, for textile materials carrying durable finishes. 510,  Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions,   subclasses 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.

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.

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,   subclasses 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.

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 subclasses 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.

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.

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.

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.

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.

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.

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,   subclasses 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.

60	PHYSICAL SEPARATION AGENTS:
	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.

61	Froth-flotation or differential adherence:
	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,   subclasses 5 , 45+, and 163+ for processes or apparatus employing such agents. 210,  Liquid Purification or Separation,   subclasses 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,   subclasses 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.

62	HEAT OR SOUND INSULATING:
	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