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 527
SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS
520 SERIES
Class Definition:
Subject to all applicable provisions and limitations of the
Class 520 Class Definition, this class provides for solid
synthetic resins derived from at least one saturated material
and from
A. a reactant which is a cellular material derived from a
plant or animal source (other than diatomaceous earth, blood,
cotton, or farinaceous flour),
B. a reactant which is a protein or biologically active
polypeptide,
C. a reactant which is a carbohydrate or derivation
thereof,
D. a lignin, tannin, or derivative thereof,
E. a reactant which is coal or bituminous material, an
extract or derivative thereof, or a fatty still residue,
F. a reactant which is a natural resin or derivative thereof
(other than tall oil or a derivative thereof).
SUBCLASSES
Subclass:
100
FROM REACTANT WHICH IS A CELLULAR MATERIAL DERIVED FROM PLANT
OR ANIMAL SOURCE AND IS OTHER THAN DIATOMACEOUS EARTH, BLOOD,
COTTON, OR FARINACEOUS FLOUR, E.G., CITRUS PULP, WALNUT SHELL
FLOUR, ETC.:
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein a solid polymer is derived from
a reactant which is a plant or animal material which retains
at least some of the original cell structure, e.g., citrus
pulp, wood, flour, etc., and excluding diatomaceous earth or
fossilized matter (e.g., chalk, etc.), blood, cotton, or
farinaceous flour or meal and a reactant which an ethylenic
monomer, SICP or SPFI; or process of preparing said polymer.
(1) Note. Soybean flour or meal is included herein, also
peanut and cottonseed meal.
(2) Note. Included herein are fibrous materials such as bark
obtained from woody plants (e.g., mimosa bark, cork, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 103+ for mimosa wood as a reactant.
SEE OR SEARCH CLASS:
524, Synthetic Resins or Natural Rubbers, subclass 9 for the
definition of "cellular material derived from plant or
animal source".
Subclass:
101
Animal derived, e.g., hair, leather, horn, etc.:
This subclass is indented under subclass 100. Subject matter
wherein the reactant is a cellular material derived from an
animal source, e.g., hair, leather, fur, horn, etc.
Subclass:
102
With ethylenic reactant:
This subclass is indented under subclass 101. Subject matter
wherein there is at least one ethylenic reactant in addition
to the animal derived cellular material.
SEE OR SEARCH CLASS:
526, Synthetic Resins or Natural Rubbers, subclass 238.1 for
homo- and co-polymers of ethylenic monomers having protein or
biologically active polypeptide chemically bonded thereto.
Subclass:
103
Wood or wood cellulose fiber or flour:
This subclass is indented under subclass 100. Subject matter
wherein the cellular material derived from a plant is wood or
wood cellulose (fiber or flour).
(1) Note. Included herein is raw lignocellulose which is
deemed to be wood for the purpose of this subclass.
(2) Note. Included herein as reactants are (e.g., wood
fibers, quebracho wood, etc.).
SEE OR SEARCH CLASS:
526, Synthetic Resins or Natural Rubbers, subclass 238.21
for homo- and co-polymers or ethylenic monomers having
cellulose or a derivative chemically bonded thereto.
Subclass:
105
With aldehyde or derivative:
This subclass is indented under subclass 103. Subject matter
wherein there is at least one reactant which is an aldehyde
or derivative in addition to the wood or wood cellulose
(fiber or flour) reactant.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "aldehyde derivative".
Subclass:
200
FROM PROTEIN OR BIOLOGICALLY ACTIVE POLYPEPTIDE REACTANT:
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein a solid polymer is derived from
a protein or biologically active polypeptide reactant and an
ethylenic reactant, SICP or SPFI; or process of preparing
said polymer.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for the
definition of "protein" and "biologically active
polypeptide".
435, Chemistry: Molecular Biology and Microbiology,
appropriate subclasses for making and using enzymes.
Subclass:
201
With ethylenically unsaturated reactant:
This subclass is indented under subclass 200. Subject matter
wherein an ethylenically unsaturated reactant is additionally
present.
SEE OR SEARCH CLASS:
526, Synthetic Resins or Natural Rubbers, subclass 238.1 for
homo- and co-polymers of ethylenic monomers having protein or
biologically active polypeptide chemically bonded thereto.
Subclass:
202
Polymerization in the presence of a specified material:
This subclass is indented under subclass 201. Subject matter
wherein the reaction system contains a specified material at
the time of polymerization.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "specified material".
Subclass:
203
With nonethylenically unsaturated reactant:
This subclass is indented under subclass 201. Subject matter
wherein a third reactant not having ethylenic unsaturation is
present.
(1) Note. The reactant not having ethylenic unsaturation
can be added or present at any time prior to solid polymer
formation (e.g., protein and halogen) reacted to yield
halogenated protein followed by reaction with unsaturated
monomer to yield solid polymer.
SEE OR SEARCH CLASS:
525, Synthetic Resins or Natural Rubbers, subclass 54.1 for
a solid polymer chemically treated with a protein or
biologically active polypeptide.
Subclass:
204
With N=C=X reactant wherein X is chalcogen:
This subclass is indented under subclass 200. Subject matter
wherein a N=C=C reactant is additionally present.
(1) Note. X is a chalcogen atom (O, S, Se, or Te).
Subclass:
205
With aldehyde or derivative or ketone reactant:
This subclass is indented under subclass 200. Subject matter
wherein an aldehyde or derivative is additionally present.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "aldehyde derivative".
Subclass:
206
With phenolic reactant:
This subclass is indented under subclass 205. Subject matter
wherein a phenolic reactant is additionally present.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
defintiion of the term "phenolic reactant".
Subclass:
207
With carboxylic acid or derivative reactant:
This subclass is indented under subclass 200. Subject matter
wherein a carboxylic acid or derivative is additionally
present.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "carboxylic acid or derivative".
Subclass:
300
FROM CARBOHYDRATE OR DERIVATIVE AS A REACTANT:
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein a solid polymer is derived from
a carbohydrate or derivative reactant and an ethylenic
reactant, a SICP, or a SPFI; or process of preparing said
polymer.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for the
definition of "carbohydrate derivative".
Subclass:
301
With N=C=X reactant wherein X is chalcogen:
This subclass is indented under subclass 300. Subject matter
wherein a N=C=X reactant is present in addition to the
carbohydrate or derivative.
(1) Note. X is a chalcogen atom (O, S, Se, or Te).
SEE OR SEARCH CLASS:
525, Synthetic Resins or Natural Rubbers, subclass 54.22 for
N=C=X derived solid polymer chemically treated with
carbohydrate or derivative.
Subclass:
302
Oxyalkylated carbohydrate:
This subclass is indented under subclass 301. Subject matter
wherein the carbohydrate or derivative is oxyalkylated (e.g.,
treated with ethylene oxide, etc.).
Subclass:
303
With phenolic reactant:
This subclass is indented under subclass 300. Subject matter
wherein a phenolic reactant is present in addition to the
carbohydrate or derivative.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for the
definition of the term "phenolic reactant"
Subclass:
304
With ketone reactant other than as a ketose:
This subclass is indented under subclass 300. Subject matter
wherein a ketone reactant (excluding a ketose) is present in
addition to the carbohydrate or derivative.
(1) Note. For purposes of the instant subclass, a ketose
carbohydrate (e.g., ketohexoses such as sorbose, fructose,
etc.) and ketopentoses such as arabinulose, ribulose and
xylulose, etc., must be accompanied by an additional
noncarbohydrate ketone (e.g., acetone, etc.
Subclass:
305
With aldehyde or derivative as a reactant other than as an
aldose:
This subclass is indented under subclass 300. Subject matter
wherein an aldehyde or derivative (other than an aldose) is
present in addition to the carbohydrate or derivative.
(1) Note. The aldose sugars are carbohydrates, but their
presence alone is not sufficient for this subclass since
another aldehyde must be present.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the terms "aldehyde" and "aldehyde
derivative".
Subclass:
306
Ethylenically unsaturated reactant:
This subclass is indented under subclass 305. Subject matter
wherein there is at least one ethylenically unsaturated
reactant.
SEE OR SEARCH CLASS:
526, Synthetic Resins or Natural Rubbers, subclass 238.2 for
solid polymer produced from ethylenic monomer only wherein at
least one monomer has carbohydrate or derivative chemically
bonded thereto.
Subclass:
309
Nitrogen-containing reactant:
This subclass is indented under subclass 305. Subject matter
wherein there is at least one nitrogen-containing reactant.
Subclass:
310
With phosphorus-containing reactant:
This subclass is indented under subclass 300. Subject matter
wherein a phosporus-containing reactant is present in
addition to the carbohydrate or derivative.
Subclass:
311
With di- or higher ester of polycarboxylic acid; or with
polycarboxylic acid or derivative and a compound containing
two or more hydroxyl groups or salts thereof as reactants:
This subclass is indented under subclass 300. Subject matter
wherein in addition to the carbohydrate or derivative there
is a reactant system comprising a di- or higher ester of
polycarboxylic acid or a carboxylic acid or derivative
admixed with a polyhydroxyl compound.
(1) Note. When the additional reactant is a
polyol-polycarboxylic acid system, the polyol, polycarboxylic
acid, and carbohydrate can be admixed and reacted in any
sequence or simultaneously.
Subclass:
312
With nitrogen-containing reactant:
This subclass is indented under subclass 300. Subject matter
wherein a nitrogen-containing reactant is present in addition
to the carbohydrate or derivative.
(1) Note. Included herein are, for example, graft
copolymers of starch and acrylonitrile, etc.
Subclass:
313
Ethylenically unsaturated reactant:
This subclass is indented under subclass 300. Subject matter
wherein an ethylenically unsaturated reactant is present.
(1) Note. The ethylenic unsaturated reactant can be either
a carbohydrate derivative (e.g., cellulose acrylate) or
another unsaturated reactant.
SEE OR SEARCH CLASS:
526, Synthetic Resins or Natural Rubbers, subclass 238.2 for
solid polymers produced from ethylenic monomers only wherein
there is a monomer having carbohydrate or derivative
chemically bonded thereto.
Subclass:
314
Unsaturated carboxylic acid or derivative reactant:
This subclass is indented under subclass 313. Subject matter
wherein the ethylenically unsaturated reactant is a
carboxylic acid or derivative.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "carboxylic acid or derivative".
Subclass:
315
With heterocyclic reactant other than carbohydrate:
This subclass is indented under subclass 313. Subject matter
wherein there is a heterocyclic reactant in addition to the
ethylenically unsaturated reactant and wherein the
heterocyclic reactant is a noncarbohydrate containing
material.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "heterocyclic".
Subclass:
400
FROM LIGNIN, TANNIN, OR DERIVATIVE REACTANT:
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein a solid polymer is derived from
lignin, tannin, or a derivative as a reactant and an
ethylenic monomer, SPFI, or SICP; or process of preparing
said polymer.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, for a definition of
the term "heterocyclic".
560, Organic Compounds, subclass 68 for a definition of
"tannin and derivative thereof".
Subclass:
401
With N=C=X reactant wherein X is chalcogen; or with
polyepoxide reactant:
This subclass is indented under subclass 400. Subject matter
wherein a N=C=X reactant or polyepoxide reactant is present
in addition to the lignin, tannin, or derivative.
(1) Note. X is chalcogen (i.e., O, S, Se, Te).
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of "polyepoxide".
Subclass:
403
With phenolic reactant:
This subclass is indented under subclass 400. Subject matter
wherein a phenolic reactant is present in addition to lignin,
tannin, or derivative.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of "phenolic reactant".
Subclass:
500
FROM COAL OR BITUMINOUS MATERIAL, EXTRACT OR DERIVATIVE
THEREOF, OR FATTY STILL RESIDUE REACTANT:
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein a solid polymer is derived from
coal or bituminous material, extract or derivative thereof or
fatty still residue by means of chemical reaction with an
ethylenic reactant, or SICP or SPFI; or process of preparing
said polymer.
(1) Note. In the absence of specific disclosure to the
contrary, the coal, bituminous material, etc., will be
treated as a nonethylenically unsaturated material.
SEE OR SEARCH CLASS:
524, Synthetic Resins or Natural Rubbers, Glossary, subclass
59 and 705 for the definition of the terms coal, bituminous
material, extract or derivative thereof and fatty still
residue.
Subclass:
501
With polyepoxide reactant; or with N=C=X reactant wherein X
is chalcogen:
This subclass is indented under subclass 500. Subject matter
wherein a polyepoxide reactant or N=C=X reactant is
additionally present.
(1) Note. X is chalcogen (O, S, Se, Te).
SEE OR SEARCH CLASS:
525, Synthetic Resins or Natural Rubbers, subclass 54.5 for
the chemical combination of a solid polyepoxide resin with
coal, bituminous material, extract, or derivative thereof or
fatty still residue.
Subclass:
503
With phenolic or aldehyde or derivative reactant:
This subclass is indented under subclass 500. Subject matter
wherein a phenolic reactant or aldehyde or derivative
reactant is additionally present.
SEE OR SEARCH CLASS:
525, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the terms "phenolic reactant", "aldehyde" and
"aldehyde derivative".
Subclass:
600
FROM NATURAL RESIN OR DERIVATIVE REACTANT EXCLUDING TALL OIL
OR DERIVATIVE:
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein a solid polymer is derived from
a reactant, which is a natural resin or derivative excluding
tall oil or derivatives, by means of chemical reaction with
an ethylenic reactant, a SICP or SPFI; or process of
preparing said polymer.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for the
definition of the terms "natural resin", "natural resin
derivative", and "fatty acid" which latter definition
includes a discussion of tall oil and its derivatives.
525, Synthetic Resins or Natural Rubbers, subclass 54.4 for
the definition natural resins (since they are presumed to
possess ethylenic unsaturation) with a preformed SICP (liquid
or solid).
526, Synthetic Resins or Natural Rubbers, subclass 238.3 for
polymers derived solely from ethylenic reactants at least one
of which is a natural resin.
Subclass:
601
With polyepoxide reactant:
This subclass is indented under subclass 600. Subject matter
wherein a polyepoxide reactant is present in addition to said
natural resin or derivative.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of "polyepoxide".
Subclass:
602
With phenolic reactant:
This subclass is indented under subclass 600. Subject matter
wherein a phenolic reactant is present in addition to said
natural resin or derivative.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "phenolic reactant"
Subclass:
603
With ethylenically unsaturated reactant:
This subclass is indented under subclass 602. Subject matter
wherein an ethylenically unsaturated reactant is present in
addition to said phenolic reactant and said natural resin or
derivative.
Subclass:
604
With polycarboxylic acid or derivative and a compound having
two or more hydroxyl groups as reactants:
This subclass is indented under subclass 600. Subject matter
wherein a polycarboxylic acid or derivative and a
polyhydroxyl compound or salt thereof are present in addition
to said natural resin or derivative.
(1) Note. Said polycarboxylic acid and polyhydroxyl compound
can be prereacted prior to admixture with the natural resin
or derivative.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "carboxylic acid or derivative".
525, Synthetic Resins or Natural Rubbers, subclasses 10+
for a solid polyester reacted with a natural resin or
derivative.
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