Class Definition for Class 524 - SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

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CLASS 524,	SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES
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SECTION I - CLASS DEFINITION

Class 524 is a continuation of Class 523. Class 523, subclass 1 is the parent subclass of all the Class 524 subclasses.

The Class 523 Class Definition is applicable to both Class 523 and Class 524.

SUBCLASSES

[List of Patents for class 524 subclass 1]

Adding a NRM to a preformed solid polymer or preformed specified intermediate condensation product, composition thereof; or process of treating or composition thereof:

This subclass is indented under subclass 1. Subject matter under Class 523, ... wherein a nonreactant material (NRM) is admixed with a preformed solid polymer (SP) or preformed specified intermediate condensation product (SICP), or the product of such an admixing process.

(1) Note. In many instances wherein a composition is claimed the claims do not indicate the mode of production of the composition. In the absence of such information it is necessary to review the disclosure to determine the mode of preparation of the composition. If it is disclosed that the composition can be prepared by admixing a NRM with a preformed solid polymer or specified intermediate, a notation into this area is required.

(2) Note. This subclass and the indented subclasses hereunder provide for chemical or physical treatments and the products thereof of compositions containing a solid polymer or a preformed specified intermediate composition and a NRM when the claims fails to recite the mode of preparation of the composition and the specification is as noted in the (1) Note, above.

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588,	Hazardous or Toxic Waste Destruction or Containment, subclass 255 for polymer or resin containing compositions which contain hazardous or toxic waste to prevent its release into the environment.

[List of Patents for class 524 subclass 2]

Water settable inorganic compound as nonreactive material:

This subclass is indented under subclass 1. Subject matter wherein the added nonreactant material is an inorganic material hardenable by hydration to produce a solid mass, e.g., Portland cement, gypsum cement, etc.

(1) Note. This subclass takes an inorganic material claimed or disclosed by the term "cement" or "setting agent", e.g., aluminum oxide cement, etc.

[List of Patents for class 524 subclass 3]

Solid polymer or specified intermediate condensation product derived from reactant-containing atom other than C, H, O, N, or halogen and which is devoid of a fused or bridged ring system:

This subclass is indented under subclass 2. Subject matter wherein a solid polymer or specified intermediate condensation product derived from at least one reactant containing an atom other than carbon, hydrogen, oxygen, nitrogen, or halogen, and which reactant is devoid of fused or bridged-ring system is present.

(1) Note. See Class 520 Glossary for a definition of the term "fused or bridged ring system".

4	Solid polymer or specified intermediate condensation product derived from at least one oxygen-containing reactant and which is devoid of a fused-ring or bridged-ring system:
	This subclass is indented under subclass 2. Subject matter wherein a solid polymer or specified intermediate condensation product is derived from at least one oxygen containing reactant and devoid of fused-or bridged-ring system is present.

[List of Patents for class 524 subclass 5]

Derived from carboxylic acid or derivative:

This subclass is indented under subclass 4. Subject matter wherein at least one of the oxygen reactants of the solid polymer or specified intermediate product is a carboxylic acid or derivative.

(1) Note. See the Class 520 Glossary for a definition of the term "carboxylic acid or derivative".

[List of Patents for class 524 subclass 6]

Derived from phenolic compound or aldehyde-containing reactant:

This subclass is indented under subclass 4. Subject matter wherein at least one of the oxygen reactants of the solid polymer or specified intermediate condensation product is an aryl-OH containing compound or a compound containing an aldehyde group.

(1) Note. See the Class 520 Glossary for a definition of the term "aldehyde".

7	Solid polymer derived from halogen-containing reactant:
	This subclass is indented under subclass 2. Subject matter wherein a solid polymer derived from a halogen containing reactant is present.

8	Solid polymer derived from ethylenically unsaturated hydrocarbon only:
	This subclass is indented under subclass 2. Subject matter wherein a solid polymer derived from ethylenically unsaturated hydrocarbon monomer only is present.

[List of Patents for class 524 subclass 9]

Cellular material derived from plant or animal source DNRM other than cotton, farinaceous meals or flours, blood, diatomaceous earth, chalk, or other fossilized matter:

This subclass is indented under subclass 1. Subject matter wherein a solid polymer or specified intermediate condensation product is admixed with a designated nonreactant naturally occurring material or chemically modified naturally occurring material and wherein the natural or modified material still retains a certain amount of the original tissue structure of the animal or plant.

(1) Note. Included within the term are materials which are chopped, cut, comminuted, pulverized, milled, sliced, etc. Included herein is soybean and wood flour.

(2) Note. An extract is considered to be devoid of original cellular structure.

(3) Note. Although cotton, whole blood, farinaceous meals and flours, and diatomaceous earth or chalk may have cellular structure they have been specifically excluded from this subclass and are to be found in other subclasses in this schedule.

(4) Note. In the absence of information to the contrary a protein is presumed to be devoid of cellular structure unless indicated otherwise.

(5) Note. In the absence of information to the contrary a cellulose or cellulose derivative is considered to be devoid of cellular structure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

17+,	for a proteinaceous extract.
21,	for whole blood.
34,	for cotton.
35+,	for a cellulosic extract.
47+,	for starch, starch derivatives, farinaceous meal or flour.
448,	for diatomaceous earths.
702+,	wherein cellular material from biological source is present as DNRM during formation of a solid polymer or SICP.

10	Animal derived:
	This subclass is indented under subclass 9. Subject matter wherein the cellular DNRM is derived from a plant source.

11	Leather:
	This subclass is indented under subclass 10. Subject matter wherein the cellular DNRM is the hide or skin of an animal, i.e., leather.

12	Hair removed from pelt, e.g., wool, etc.:
	This subclass is indented under subclass 10. Subject matter wherein the cellular DNRM is hair that has been removed from the skin or pelt of an animal, e.g., wool, etc.

[List of Patents for class 524 subclass 13]

Wood or wood cellulose fiber, or flour:

This subclass is indented under subclass 9. Subject matter wherein the cellular DNRM is wood or wood cellulose fiber or flour derived from wood cellulose.

(1) Note. In the absence of information of the contrary cellulose or derivatives thereof will be assumed to be devoid of cellular structure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

35+,	for a cellular product devoid of cellular structure.

14	At least one solid polymer or SICP derived from at least one nonethylenic reactant:
	This subclass is indented under subclass 13. Subject matter wherein the wood or wood cellulose fiber or flour is admixed with a solid polymer or specified intermediate condensation product derived from at least one nonethylenic reactant.

[List of Patents for class 524 subclass 15]

Vegetable shell, hull, or cob ingredient, e.g., nut shells, pits, etc.:

This subclass is indented under subclass 9. Subject matter wherein the cellular DNRM is a vegetable shell, hull, or cob ingredient.

(1) Note. Included herein are shell, hull, or cob materials which need not be specifically removed from the original vegetable material, as well as materials which have been removed from the vegetable and then admixed with the polymer or SICP.

[List of Patents for class 524 subclass 16]

Bark or cork:

This subclass is indented under subclass 9. Subject matter wherein the cellular DNRM is bark or cork.

(1) Note. Bark is any portion of a stem or root of a tree outside of the cambrium circle.

(2) Note. Cork is the exterior layer of the bark of certain trees.

SEE OR SEARCH THIS CLASS, SUBCLASS:

13+,	for wood to which the bark or cork is still attached.

[List of Patents for class 524 subclass 17]

Protein or biologically active polypeptide DNRM excluding wheat flour or natural cereals which may contain protein ingredient:

This subclass is indented under subclass 1. Subject matter wherein a solid polymer or specified intermediate condensation product is admixed with a designated nonreactant material which is a protein or a biologically active polypeptide.

(1) Note. Cereal flours which may contain protein have been excluded herefrom.

(2) Note. Glue absent disclosure to the contrary is considered as being animal derived and is classified in subclass 21.

(3) Note. See the Class 520 Glossary for a definition of the terms "protein" and "biologically active polypeptide".

SEE OR SEARCH THIS CLASS, SUBCLASS:

21,	for glue.
47+,	for cereal flours which may contain protein.

[List of Patents for class 524 subclass 18]

With natural resin or carbohydrate DNRM:

This subclass is indented under subclass 17. Subject matter wherein the protein or polypeptide DNRM is admixed with an additional DNRM which is a natural resin or a modified form thereof or carbohydrate.

(1) Note. Included herein is shellac, copal, rosin, etc.

(2) Note. See the Class 520 Glossary for a definition of the terms "carbohydrates" or "natural resin".

19	Hydrocarbon material DNRM which is nonsolid polymer, e.g., wax, etc.:
	This subclass is indented under subclass 17. Subject matter wherein the protein or polypeptide DNRM is admixed with a hydrocarbon DNRM and which hydrocarbon DNRM is other than a solid polymer, e.g., hydrocarbon wax, etc.

20	Two or more diverse proteins or polypeptides:
	This subclass is indented under subclass 17. Subject matter wherein the DNRM contains at least two proteins, two polypeptides, or at least one protein and at least one polypeptide NRM.

[List of Patents for class 524 subclass 21]

Animal derived protein or polypeptide other than casein, e.g., blood, egg albumin, etc.:

This subclass is indented under subclass 17. Subject matter wherein the protein or polypeptide DNRM is other than casein or a derivative thereof and is derived from an animal source.

(1) Note. Included herein is blood, egg albumin, glue, etc.

(2) Note. Glue absent disclosure to the contrary is considered as being animal derived and proper for this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

25+,	for a casein or derivative.

[List of Patents for class 524 subclass 22]

Gelatin:

This subclass is indented under subclass 21. Subject matter wherein the protein is gelatin or a derivative thereof.

(1) Note. Gelatin is a protein obtained from collagen by usually boiling skin, ligaments, tendons or bones with water.

23	Solid polymer derived from ethylenic reactants only:
	This subclass is indented under subclass 22. Subject matter wherein the gelatin DNRM is admixed with a solid polymer derived form ethylenic reactants only.

[List of Patents for class 524 subclass 24]

Derived from carboxylic acid or derivative:

This subclass is indented under subclass 23. Subject matter wherein at least one of the ethylenic reactants is a carboxylic acid or derivative.

(1) Note. See the Class 520 Glossary for a definition of the term "carboxylic acid or derivative.

[List of Patents for class 524 subclass 25]

Casein or derivative or soy protein:

This subclass is indented under subclass 17. Subject matter wherein the protein or polypeptide DNRM is casein or derivative or a protein or polypeptide derived form the soybean plant.

(1) Note. Casein is the principal protein in milk. It is a phosphoprotein consisting of about 15 amino acids and has a molecular weight ranging from 75,000 to 375,000.

[List of Patents for class 524 subclass 26]

Solid polymer or SICP derived from carboxylic acid or derivative:

This subclass is indented under subclass 25. Subject matter wherein the casein or soy protein DNRM is admixed with at least one solid polymer or specified intermediate condensation derived from at least one carboxylic acid or derivative.

(1) Note. See the Class 520 Glossary for a definition of the term "carboxylic acid or derivative".

[List of Patents for class 524 subclass 27]

Carbohydrate or derivative DNRM:

(1) Note. Included within the definition are cellulose, starch, farinaceous meals or flours, sugars, 0-glycosides, n-glycosides, and s-glycosides.

(2) Note. Tannins, lignins, and derivatives thereof have been excluded herein from being carbohydrates.

(3) Note. See the Class 520 Glossary for a definition of the term carbohydrate or derivative.

SEE OR SEARCH THIS CLASS, SUBCLASS:

72+,	for lignins or tannins utilized as DNRM"s materials and appropriate subclasses below for sugar acids or sugar alcohols as well as carbohydrate reaction products which contain fewer than five carbon atoms, or for carbohydrate reaction products wherein the carbohydrate nucleus has been destroyed.

[List of Patents for class 524 subclass 28]

Algin or derivative:

This subclass is indented under subclass 27. Subject matter wherein the carbohydrate DNRM is algin or a derivative thereof.

(1) Note. Algin is a carbohydrate product usually extracted from giant brown seaweed (e.g., giant kelp, etc.).

29	Atom other than O, H, C, S, or Group IA metal:
	This subclass is indented under subclass 27. Subject matter wherein the carbohydrate DNRM contains an atom other than oxygen, hydrogen, carbon, sulfur, or a group IA metal atom (Li, Na, K, Rb, Cs).

30	Atom other than N, O, H, C, S, or Group IA metal:
	This subclass is indented under subclass 29. Subject matter wherein the carbohydrate DNRM contains an atom other than nitrogen, oxygen, sulfur, hydrogen, carbon, or a Group IA metal atom.

31	Cellulose derivative:
	This subclass is indented under subclass 29. Subject matter wherein the carbohydrate is a nitrogen compound containing repeating glucose units, which repeating units have the following structure:

32	Solid polymer derived from ethylenic reactants only:
	This subclass is indented under subclass 31. Subject matter wherein the carbohydrate is mixed with a solid polymer derived from only ethylenic reactants.

[List of Patents for class 524 subclass 33]

Solid polymer or SICP derived from at least one aldehyde or aldehyde derivative reactant:

This subclass is indented under subclass 31. Subject matter wherein the carbohydrate is admixed with a solid polymer or specified intermediate condensation product derived from at least one aldehyde or aldehyde derivative.

(1) Note. See the Class 520 Glossary for a definition of the terms "aldehyde" and "aldehyde derivative".

34	Paper plant solid waste material or cotton, e.g., white liquor, etc.:
	This subclass is indented under subclass 27. Subject matter wherein the carbohydrate is a material in a paper making process, e.g., paper, etc., or is cotton.

[List of Patents for class 524 subclass 35]

Cellulose:

This subclass is indented under subclass 27. Subject matter wherein the carbohydrate contains repeating glucose units, which repeating units have the following structure:

Image 1 for class 524 subclass 35

SEE OR SEARCH THIS CLASS, SUBCLASS:

31+,	for a NRM which is a nitrogen containing cellulose compound.

[List of Patents for class 524 subclass 36]

Sulfur containing ester, e.g., viscose, xanthate, etc.:

This subclass is indented under subclass 35. Subject matter wherein the cellulose DNRM contains at least one sulfur atom.

(1) Note. Included herein is viscose as a DNRM and which is usually made by reacting carbon disulfide with the sodium salt of cellulose to yield a xanthate, which forms a viscous collodial solution in dilute aqueous alkali.

(2) Note. This subclass provides for the colloidal solution as well as the cellulose xanthate.

Image 1 for class 524 subclass 36

[List of Patents for class 524 subclass 37]

Carboxylic acid ester:

This subclass is indented under subclass 35. Subject matter wherein the cellulose contains at least one carboxylic acid ester group therein.

(1) Note. See the Class 520 Glossary wherein the term "carboxylic acid ester group" is defined under "carboxylic acid or derivative".

[List of Patents for class 524 subclass 38]

Mixed carboxylate ester:

This subclass is indented under subclass 37. Subject matter wherein the cellulose contains at least two diverse carboxylic acid ester groups.

(1) Note. Included herein are, e.g., cellulose acetate butyrate, cellulose butyrate benzoate, etc.

39	Acetate:
	This subclass is indented under subclass 38. Subject matter wherein at least one of the carboxylic acid ester groups of the cellulose is a -O - - CH₃ group.

40	At least one solid polymer derived from ethylenic reactants only:
	This subclass is indented under subclass 39. Subject matter wheren the carbohydrate is mixed with a solid polymer derived from only ethylenic reactants.

41	Acetate:
	This subclass is indented under subclass 37. Subject matter wherein the cellulose contains at least one -O-- CH₃ group.

42	Ether group containing, other than solely linking of carbohydrate groups directly to each other:
	This subclass is indented under subclass 35. Subject matter wherein the cellulose has the general formula R-O-R", wherein R-O- is a cellulose moiety and R" is a carbon atom of a noncarbohydrate containing organic radical.

43	Hydroxyalkyl:
	This subclass is indented under subclass 42. Subject matter wherein the cellulose has the general formula R-O-R"-OH wherein R-O- is a cellulose moiety and -R"-OH is a noncarbohydrate containing organic radical wherein a carbon of the R" group is directly bonded to an oxygen of the O-R group.

44	Hydroxyethyl:
	This subclass is indented under subclass 43. Subject matter wherein the R"-OH group of the cellulose DNRM contains the -O-C-C-OH group.

45	Carboxyalkyl or alkali metal salt thereof:
	This subclass is indented under subclass 42. Subject matter wherein the cellulose DNRM has the general formula R-O-R"--OH or R-O-R"- metal, wherein R-O- is a cellulose moiety and - R"--OH or -R"- metal are noncarbohydrate containing organic radicals and wherein a carbon of the R" group is directly bonded to an oxygen atom of the O-R group.

46	Alkyl:
	This subclass is indented under subclass 42. Subject matter wherein the cellulose DNRM has the general formula R-O-R", wherein R-O- is a cellulose moiety and R" is a carbon atom of a noncarbohydrate containing acyclic organic moiety.

[List of Patents for class 524 subclass 47]

Starch or derivative or farinaceous meal or flour:

This subclass is indented under subclass 27. Subject matter wherein the carbohydrate DNRM is a compound containing amylose and amylopectin as its main components or derivatives thereof; or wherein the DNRM is a farinaceous meal or flour.

(1) Note. Starches are heterogenous in that the amylose and amylopectin occur in different ratios to each other.

(2) Note. Starches yield dextrin upon extensive degradation and yield glucose upon complete hydrolysis.

(3) Note. Farinaceous meal or flour is intended to include the starch products derived from cereal grains and cereal grasses (e.g., corn, wheat, rice, oats, barley, sorghum, etc.) and starch materials derived from tuber plants (e.g., potato, yams, arrowroot, etc.).

(4) Note. Included herein are starch fractions such as amylose and amylopectin as well as modified starches (e.g., thin boiling starches, etc.).

(5) Note. Although some farinaceous materials, e.g., flour, contain minor amounts of proteinaceous materials, such materials will be considered proper for this area rather than in the protein area.

[List of Patents for class 524 subclass 48]

Dextrin or derivative:

This subclass is indented under subclass 47. Subject matter wherein the starch is a gummy polysaccharide produced by thermal or acid degradation of starch, and derivatives of such compounds.

(1) Note. Dextrins are carbohydrates, intermediate between starch and sugars. Degradation of dextrin yields maltose and glucose.

49	Aldehyde reaction product:
	This subclass is indented under subclass 47. Subject matter wherein the starch contains at least two aldehyde groups and is the product generally resulting from the reaction between starch or a derivative thereof and a reactant containing the functional group --OH and derivatives of such compounds.

50	Ether group, other than solely linking of carbohydrate groups directly to each other:
	This subclass is indented under subclass 47. Subject matter wherein the starch has the general formula R-O-R", wherein -R-O is a starch moiety and R" is a carbon atom of a noncarbohydrate containing organic radical and which carbon is not directly bonded to a chalcogen atom by a double bond.

51	Ester:
	This subclass is indented under subclass 47. Subject matter wherein the starch is a compound resulting from the reaction of a hydroxyl group of a starch and an acid.

52	Solid polymer derived from ethylenic reactants only:
	This subclass is indented under subclass 47. Subject matter wherein the carbohydrate is mixed with a solid polymer derived from only ethylenic reactants.

[List of Patents for class 524 subclass 53]

At least one carboxylic acid ester:

This subclass is indented under subclass 52. Subject matter wherein the solid polymer derived from ethylenic reactants only is derived from at least one carboxylic acid ester.

(1) Note. See the Class 520 Glossary wherein the term "carboxylic acid ester" is defined under "carboxylic acid or derivative".

[List of Patents for class 524 subclass 54]

Dextran or derivative:

This subclass is indented under subclass 27. Subject matter wherein the carbohydrate is higher molecular weight polysaccharide containing D-glucose units linked predominately as D (1! 6).

(1) Note. Dextrans yield only glucose on hydrolysis but differ from starch and glycogen as to molecular structure.

(2) Note. Dextrans are a group of compounds differing according to the bacteria used to ferment the sugar.

55	Gum or derivative:
	This subclass is indented under subclass 27. Subject matter wherein the carbohydrate is a highly branched polysaccharide composed of two or more monosaccharides and which are exudations of plants which are produced by the plant to cover wounds and to prevent attack by organisms.

[List of Patents for class 524 subclass 56]

Disaccharide or trisaccharide, e.g., sucrose, etc.:

This subclass is indented under subclass 27. Subject matter wherein the carbohydrate contains only two or three monomeric units each of which contains at least five carbon atoms.

(1) Note. Included within the definition of the di- and tri- saccharides are, e.g., sucrose, lactose, maltose, cellobiose, etc.

57	Ester:
	This subclass is indented under subclass 56. Subject matter wherein the di or trisaccharide is a compound resulting from the reaction of a hydroxyl group of a di or trisaccharide and an acid.

[List of Patents for class 524 subclass 58]

Monosaccharide, e.g., glucose, fructose, etc.:

This subclass is indented under subclass 27. Subject matter wherein the carbohydrate contains only a single unit containing at least five or more carbon atoms.

(1) Note. Included within the definition of a monosaccharide are, e.g., glucose, fructose, ribose, etc.

[List of Patents for class 524 subclass 59]

Coal, bituminous additive, extract, or derivative thereof; or oil shale; or fatty still residue DNRM:

(1) Note. Included within the subclass are oil shale or shale material from which oil has or has not been recovered as well as stearine pitch, coke products, coal tar and pitches.

(2) Note. Chemical compounds which are the result of a synthesis reaction utilizing a petroleum or coal source as a reactant are not the type of material which will generally qualify as a DNRM under this subclass.

(3) Note. Included within this subclass are materials generally described as asphalt. Asphalt derived from natural deposits, e.g., gilsonite, etc., coal or petroleum is included herein.

(4) Note. Bitumen refers to solid or semisolid materials which are often black or dark brown and which occur naturally or are obtained by refining petroleum or are the components of coal which are soluble in organic solvents. The term also applies generically to include natural and synthetic asphalts, tar and pitches. For example, natural asphalts such as Trinidad, Bermuda, glisonite, grahamite and Cuban, etc. Petroleum asphalt may be used such as these obtained from California crudes, Smack over Arkansas crudes, Mid-Continental air-blown oils, Mexican petroleum asphalts, tarry residues known as cracked asphalts by-products during the cracking of gas oil, or other heavier petroleum fractions to obtain gasoline or other lighter fractions, etc. Further still, bituminous materials may be used such as coal tar, wood tar, petroleum pitches, and pitches obtained from various industrial processes such as a fatty acid pitch, etc.

(5) Note. Materials which are substantially known as to chemical constitution are excluded from this subclass and are classified below in the schedule on the basis of chemical constitution. If any doubt exists as to whether a material is of sufficient chemical identify so as to be classified as a specific DNRM, then such doubt is to be resolved by classifying the claim as an original in this area and cross-referencing to the appropriate DNRM area. Certain hydrocarbon materials which have been designated as not being proper herein are hydrocarbon waxes, fluxing oils, low molecular weight addition polymers, hydrocarbon petroleum distillation products, petroleum and petroleum crude oils.

SEE OR SEARCH THIS CLASS, SUBCLASS:

64,	for a material designated as asphaltene.
474+,	for a hydrocarbon DNRM which is derived from coal.

60	With water additive DNRM:
	This subclass is indented under subclass 59. Subject matter wherein the DNRM is in admixture with free water as a DNRM.

61	With nitrogen containing additive DNRM:
	This subclass is indented under subclass 60. Subject matter wherein a nitrogen containing DNRM is in admixture with the DNRM and water DNRM.

[List of Patents for class 524 subclass 62]

With hydrocarbon DNRM additive which is nonresinous and which is nonbituminous, or noncoal derived, e.g., cutback asphalt, kerosene, paraffin wax, etc.:

This subclass is indented under subclass 59. Subject matter wherein the DNRM is admixed with a DNRM which is a hydrocarbon material and which is other than coal or a bituminous material or a hydrocarbon material proper for this subclass as a designated nonreactant material.

(1) Note. Included within this subclass as hydrocarbon materials are hydrocarbon waxes, fluxing oils, low molecular weight hydrocarbon addition polymers, hydrocarbon petroleum distillation products, petroleum, petroleum crude oils, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

59,	for substances derived from coal or bituminous material. Certain special hydocarbon compounds specifically excluded from subclass 59 (see notes 2 and 5 therein) will qualify for this subclass when in admixture with a designated nonreactant material proper under the definition of subclass 59.

[List of Patents for class 524 subclass 63]

Coke additive:

This subclass is indented under subclass 59. Subject matter wherein the DNRM is coke.

(1) Note. Coke for purposes of this subclass is the carbonaceous reside (70-78%) remaining after the volatile constituents have been removed by destructive distillation from coal, petroleum, pitch, or other carbonaceous material.

[List of Patents for class 524 subclass 64]

Asphaltene or maltene additive:

This subclass is indented under subclass 59. Subject matter wherein the DNRM is asphaltene or a maltene additive.

(1) Note. It is recognized that asphaltene or maltene occur in asphalt and that therefor every asphaltene product would have these constituents. For purposes of this subclass, there must be an expressed desire to limit other than completely removed or increase or in some other way select that added material for its critical maltene or asphaltene content.

(2) Note. Asphalt is a collodial system which has a disperse phase and a continuous phase. The components of highest molecular weight, i.e., micelles constitute the disperse phase and are known as asphaltenes. The continuous or intermicellular phase represents the compounds of lower molecular weight and are called maltenes.

[List of Patents for class 524 subclass 65]

Coal derived additive, e.g., lignite, etc:

This subclass is indented under subclass 59. Subject matter wherein the DNRM is coal or a material derived therefrom.

(1) Note. Solid resin materials produced by subjecting coal tar distillate fractions to elevated temperature and pressure are not deemed to be resins for purposes of the Class 520 series of classes and therefore can be a DNRM when admixed with a solid polymer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

474+,	appropriate subclasses for specific chemical compounds or mixtures which are coal derived.
498,	through 612, for a solid polymer or specified intermediate condensation product in admixture with a hydrocarbon derived from coal and which hydrocarbon fails to meet the definition of subclasses 474+.

66	Tar or pitch:
	This subclass is indented under subclass 65. Subject matter wherein the DNRM is a mixed aromatic hydrocarbon product obtained by the distillation of bituminous coal.

[List of Patents for class 524 subclass 67]

Oil shale:

This subclass is indented under subclass 59. Subject matter wherein the DNRM is oil shale rock.

(1) Note. Oil shale is a sedimentary rock that contains little or no oil and contains organic material derived from aquatic organisms, waxy spores, and pollen grains which are converted to oil by thermal cracking. The pyrobituminous organic material which forms oil by pyrolysis is called kerogen.

(2) Note. Included herein is oil shale which contains the organic material as well as spent oil shale rock.

[List of Patents for class 524 subclass 68]

Two or more solid polymers, or graft or graft-type, or block or block-type solid copolymer:

This subclass is indented under subclass 59. Subject matter wherein the DNRM is admixed with two or more solid polymers, or with a block, block type, graft or graft type solid copolymer.

(1) Note. See the Class 520 Glossary for a definition of the terms "block, block type, graft, or graft type solid copolymer".

(2) Note. For purposes of this subclass, a SICP is treated as a solid polymer.

[List of Patents for class 524 subclass 69]

Solid polymer derived from ethylenic reactants only at least one of which contains a carboxylic acid or derivative:

This subclass is indented under subclass 59. Subject matter wherein the DNRM is admixed with a solid polymer derived from only ethylenic reactants at least one of which is a carboxylic acid or derivative.

(1) Note. See the Class 520 Glossary for a definition of the term "carboxylic acid or derivative".

70	Solid polymer derived from ethylenic reactants only, at least one of which is propylene:
	This subclass is indented under subclass 59. Subject matter wherein the DNRM is admixed with a solid polymer derived from ethylenic reactants only, at least one of which is propylene.

71	Solid polymer derived from ethylenic reactants only, at least one of which is a hydrocarbon other than ethylene:
	This subclass is indented under subclass 59. Subject matter wherein the DNRM is admixed with a solid polymer derived form ethylenic reactants only at least one of which is a hydrocarbon other than ethylene.

[List of Patents for class 524 subclass 72]

Lignin or tannin or derivative DNRM:

(1) Note. See the Class 520 Glossary for a definition of the term "lignin or derivative".

(2) Note. Chemically, tannins appear to be esters of Gallic acid whose -COOH is estrified by a second Gallic acid molecule or glucosioes thereof.</