Skip over navigation
Main CPC Sections USPC Class Numbers & Titles USPC Class Numbers Classification Search Page Contacts Help
Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC)
Printable version [PDF]
CPC
COOPERATIVE PATENT CLASSIFICATION
Collapse
C08B
POLYSACCHARIDES ; DERIVATIVES THEREOF ( polysaccharides containing less than six saccharide radicals attached to each other by glycosidic linkages C07H; fermentation or enzyme-using processes C12P 19/00 ; sugar industry C13; production of cellulose D21 )
WARNING
-
[1202]

The following IPC groups are not used in the CPC scheme. Subject matter covered by these groups is classified in the following CPC groups:

- C08B37/06 covered by C08B 37/0045 - C08B37/10 covered by C08B 37/0075 - C08B 37/12 covered by C08B 37/0039

Collapse
Guide Heading:
Preparation
Collapse
C08B 1/00
{
Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
}
C08B 1/003
.
{
Preparation of cellulose solutions, i.e. dopes, with different possible solvents, e.g. ionic liquids ( solutions used in the manufacture of monocomponent artificial filaments or cellulose or derivatives thereof D01F 2/02 )
}
C08B 1/006
.
{
Preparation of cuprammonium cellulose solutions
}
Collapse
C08B 1/02
.
Rendering cellulose suitable for esterification
{
( esterification per se, C08B 3/00 , C08B 5/00 , C08B 7/00 or C08B 9/00 )
}
C08B 1/04
. .
for the preparation of cellulose nitrate
C08B 1/06
.
Rendering cellulose suitable for etherification
{
( etherification per se C08B 11/00 )
}
Collapse
C08B 1/08
.
Alkali cellulose
Collapse
C08B 1/10
. .
Apparatus for the preparation of alkali cellulose
C08B 1/12
. . .
Steeping devices
C08B 1/14
. . .
Ripening devices
Collapse
C08B 3/00
Preparation of cellulose esters of organic acids
{
( rendering cellulose suitable for esterification C08B 1/02 )
}
C08B 3/02
.
Catalysts used for the esterification
C08B 3/04
.
Cellulose formate
C08B 3/06
.
{
Cellulose acetate, e.g. mono-acetate, di-acetate or tri-acetate
}
Collapse
C08B 3/08
.
of monobasic organic acids with 3 or more carbon atoms,
{
e.g. propionate or butyrate
}
C08B 3/10
. .
with five or more carbon-atoms,
{
e.g. valerate
}
C08B 3/12
.
of polybasic organic acids
C08B 3/14
.
in which the organic acid residue contains substituents, e.g. NH2, Cl
Collapse
C08B 3/16
.
Preparation of mixed organic cellulose esters,
{
e.g. cellulose aceto-formate or cellulose aceto-propionate
}
C08B 3/18
. .
Aceto-butyrates
C08B 3/20
.
Esterification with maintenance of the fibrous structure of the cellulose ( surface esterification of textiles D06M 13/00 )
Collapse
C08B 3/22
.
Post-esterification treatments, including purification
C08B 3/24
. .
Hydrolysis or ripening
Collapse
C08B 3/26
. .
Isolation of the cellulose ester
C08B 3/28
. . .
by precipitation
C08B 3/30
. .
Stabilising ( by addition of stabilisers C08K )
Collapse
C08B 5/00
Preparation of cellulose esters of inorganic acids,
{
e.g. phosphates ( rendering cellulose suitable for esterification C08B 1/02 )
}
Collapse
C08B 5/02
.
Cellulose nitrate,
{
i.e. nitrocellulose ( rendering cellulose suitable for the preparation of cellulose nitrate C08B 1/04 )
}
Collapse
C08B 5/04
. .
Post-esterification treatments,
{
e.g. densification of powders
}
 , including purification
C08B 5/06
. . .
Isolation of the cellulose nitrate
C08B 5/08
. . .
Stabilisation ( by addition of stabilisers C08K ) ;
{
Post-treatment, e.g. phlegmatisation
}
C08B 5/10
. . .
Reducing the viscosity
C08B 5/12
. . .
Replacing the water by organic liquids
C08B 5/14
.
Cellulose sulfate
C08B 7/00
Preparation of cellulose esters of both organic and inorganic acids
{
( rendering cellulose suitable for esterification C08B 1/02 )
}
Collapse
C08B 9/00
Cellulose xanthate ; Viscose
{
( formation of films C08J 5/18 ; formation of fibres D01F; rendering cellulose suitable for esterification C08B 1/02 )
}
C08B 9/02
.
Sulfidisers ; Dissolvers
C08B 9/04
.
Continuous processes
C08B 9/06
.
Single-stage processes
Collapse
C08B 11/00
Preparation of cellulose ethers
{
( rendering cellulose suitable for etherification C08B 1/06 )
}
Collapse
C08B 11/02
.
Alkyl or cycloalkyl ethers
Collapse
C08B 11/04
. .
with substituted hydrocarbon radicals
C08B 11/06
. . .
with halogen-substituted hydrocarbon radials
C08B 11/08
. . .
with hydroxylated hydrocarbon radicals ; Esters, ethers, or acetals thereof
Collapse
C08B 11/10
. . .
substituted with acid radicals
C08B 11/12
. . . .
substituted with carboxylic radicals,
{
e.g. carboxymethylcellulose (CMC)
}
Collapse
C08B 11/14
. . .
with nitrogen-containing groups
C08B 11/145
. . . .
with basic nitrogen, e.g. aminoalkyl ethers
C08B 11/15
. . . .
with carbamoyl groups,
{
i.e. -CO-NH2
}
C08B 11/155
. . . .
with cyano groups, e.g. cyanoalkyl ethers
Collapse
C08B 11/16
.
Aryl or aralkyl ethers
C08B 11/18
. .
with substituted hydrocarbon radicals
C08B 11/187
.
with olefinic unsaturated groups
C08B 11/193
.
Mixed ethers, i.e. ethers with two or more different etherifying groups
Collapse
C08B 11/20
.
Post-etherification treatments of chemical or physical type,
{
e.g. mixed etherification in two steps
}
 , including purification
C08B 11/22
. .
Isolation
Collapse
C08B 13/00
Preparation of cellulose ether-esters
C08B 13/02
.
Cellulose ether xanthates
Collapse
C08B 15/00
Preparation of other cellulose derivatives or modified cellulose,
{
e.g. complexes
}
C08B 15/005
.
{
Crosslinking of cellulose derivatives
}
Collapse
C08B 15/02
.
Oxy-cellulose ; Hydrocellulose ;
{
Cellulosehydrate e.g. microcrystalline cellulose
}
C08B 15/04
. .
Carboxycellulose, e.g. prepared by oxidation with nitrogen dioxide
Collapse
C08B 15/05
.
Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur ( esters or phosphorous acids C08B 5/00 )
C08B 15/06
. .
containing nitrogen,
{
e.g. carbamates
}
C08B 15/08
.
Fractionation of cellulose, e.g. separation of cellulose crystallites
C08B 15/10
.
Crosslinking of cellulose
C08B 16/00
Regeneration of cellulose
Collapse
C08B 17/00
Apparatus for esterification or etherification of cellulose
C08B 17/02
.
for making organic esters of cellulose
C08B 17/04
.
for making cellulose nitrate
C08B 17/06
.
for making cellulose ethers
Collapse
C08B 30/00
Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
C08B 30/02
.
Preparatory treatment, e.g. crushing of raw materials
{
or steeping process
}
 ( machines for preliminary washing A23N ) ]
Collapse
C08B 30/04
.
Extraction or purification
Collapse
C08B 30/042
. .
from cereals or grains
C08B 30/044
. . .
from corn or maize
C08B 30/046
. . .
from wheat
C08B 30/048
. .
from potatoes
C08B 30/06
.
Drying ; Forming
C08B 30/08
.
Concentration of starch suspensions
C08B 30/10
.
Working-up residues from the starch extraction,
{
e.g. potato peel or steeping water
}
 , including pressing water from the starch-extracted material
Collapse
C08B 30/12
.
Degraded,
{
destructured
}
 or non-chemically modified starch
{
e.g. mechanically, enzymatically or by irradiation; Bleaching of starch ( preparation of chemical derivatives of starch C08B 31/00 )
}
C08B 30/14
. .
Cold water dispersible or pregelatinised starch
C08B 30/16
. .
Apparatus therefor
C08B 30/18
. .
Dextrin,
{
e.g. yellow canari, white dextrin, amylodextrin or maltodextrin; Methods of depolymerisation, e.g. by irradiation or mechanically
}
C08B 30/20
.
Amylose or amylopectin ( chemical derivatives thereof C08B 33/00 , C08B 35/00 )
Collapse
C08B 31/00
Preparation of derivatives of starch ( derivatives of amylose C08B 33/00 ; derivatives of amylopectin C08B 35/00 )
Collapse
C08B 31/003
.
{
Crosslinking of starch
}
C08B 31/006
. .
{
Crosslinking of derivatives of starch
}
Collapse
C08B 31/02
.
Esters
C08B 31/04
. .
of organic acids,
{
e.g. alkenyl-succinated starch
}
Collapse
C08B 31/06
. .
of inorganic acids
C08B 31/063
. . .
{
Starch sulfates
}
C08B 31/066
. . .
{
Starch phosphates, e.g. phosphorylated starch
}
Collapse
C08B 31/08
.
Ethers
C08B 31/10
. .
Alkyl or cycloalkyl ethers
Collapse
C08B 31/12
. .
having alkyl or cycloalkyl radicals substituted by heteroatoms,
{
e.g. hydroxyalkyl or carboxyalkyl starch
}
C08B 31/125
. . .
{
having a substitutent containing at least one nitrogen atom, e.g. cationic starch
}
C08B 31/14
. .
Aryl or aralkyl ethers
C08B 31/16
.
Ether-esters
Collapse
C08B 31/18
.
Oxidised starch
C08B 31/185
. .
{
Derivatives of oxidised starch, e.g. crosslinked oxidised starch
}
Collapse
C08B 33/00
Preparation of derivatives of amylose
C08B 33/02
.
Esters
C08B 33/04
.
Ethers
C08B 33/06
.
Ether-esters
C08B 33/08
.
Oxidised amylose
Collapse
C08B 35/00
Preparation of derivatives of amylopectin
C08B 35/02
.
Esters
C08B 35/04
.
Ethers
C08B 35/06
.
Ether-esters
C08B 35/08
.
Oxidised amylopectin
Collapse
C08B 37/00
Preparation of polysaccharides not provided for in groups C08B 1/00 to C08B 35/00 ; Derivatives thereof ( cellulose D21 ;
{
microbiological processes C12P
}
 )
C08B 37/0003
.
{
General processes for their isolation or fractionation, e.g. purification or extraction from biomass
}
Collapse
C08B 37/0006
.
{
Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
}
Collapse
C08B 37/0009
. .
{
alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
}
Collapse
C08B 37/0012
. . .
{
Cyclodextrin (CD), e.g. cycle with 6 units (alpha), with 7 units (beta) and with 8 units (gamma), large-ring cyclodextrin or cycloamylose with 9 units or more; Derivatives thereof
}
C08B 37/0015
. . . .
{
Inclusion compounds, i.e. host-guest compounds, e.g. polyrotaxanes
}
C08B 37/0018
. . .
{
Pullulan, i.e. (alpha-1,4)(alpha-1,6)-D-glucan; Derivatives thereof
}
C08B 37/0021
. . .
{
Dextran, i.e. (alpha-1,4)-D-glucan; Derivatives thereof, e.g. Sephadex, i.e. crosslinked dextran
}
Collapse
C08B 37/0024
. .
{
beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
}
Collapse
C08B 37/0027
. . .
{
2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
}
C08B 37/003
. . . .
{
Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof
}
C08B 37/0033
. . .
{
Xanthan, i.e. D-glucose, D-mannose and D-glucuronic acid units, saubstituted with acetate and pyruvate, with a main chain of (beta-1,4)-D-glucose units; Derivatives thereof
}
Collapse
C08B 37/0036
. .
{
Galactans; Derivatives thereof
}
C08B 37/0039
. . .
{
Agar; Agarose, i.e. D-galactose, 3,6-anhydro-D-galactose, methylated, sulfated, e.g. from the red algae Gelidium and Gracilaria; Agaropectin; Derivatives thereof, e.g. Sepharose, i.e.crosslinked agarose
}
C08B 37/0042
. . .
{
Carragenan or carragen, i.e. D-galactose and 3,6-anhydro-D-galactose, both partially sulfated, e.g. from red algae Chondrus crispus or Gigantia stellata; kappa-Carragenan; iota-Carragenan; lambda-Carragenan; Derivatives thereof
}
Collapse
C08B 37/0045
. .
{
alpha-D-Galacturonans, e.g. methyl ester of (alpha-1,4)-linked D-galacturonic acid units, i.e. pectin, or hydrolysis product of methyl ester of alpha-1,4-linked D-galacturonic acid units, i.e. pectinic acid; Derivatives thereof
}
C08B 37/0048
. . .
{
Processes of extraction from organic materials
}
Collapse
C08B 37/0051
. .
{
beta-D-Fructofuranans, e.g. beta-2,6-D-fructofuranan, i.e. levan; Derivatives thereof
}
C08B 37/0054
. . .
{
Inulin, i.e. beta-2,1-D-fructofuranan
}
 ; Derivatives thereof]
C08B 37/0057
. .
{
beta-D-Xylans, i.e. xylosaccharide, e.g. arabinoxylan, arabinofuronan, pentosans; (beta-1,3)(beta-1,4)-D-Xylans, e.g. rhodymenans; Hemicellulose; Derivatives thereof
}
Collapse
C08B 37/006
.
{
Heteroglycans, i.e. polysaccharides having more than one sugar residue in the main chain in either alternating or less regular sequence; Gellans; Succinoglycans; Arabinogalactans; Tragacanth or gum tragacanth or traganth from Astragalus; Gum Karaya from Sterculia urens; Gum Ghatti from Anogeissus latifolia; Derivatives thereof
}
Collapse
C08B 37/0063
. .
{
Glycosaminoglycans or mucopolysaccharides, e.g. keratan sulfate; Derivatives thereof, e.g. fucoidan
}
C08B 37/0066
. . .
{
Isolation or extraction of proteoglycans from organs
}
C08B 37/0069
. . .
{
Chondroitin-4-sulfate, i.e. chondroitin sulfate A ; Dermatan sulfate, i.e. chondroitin sulfate B or beta-heparin ; Chondroitin-6-sulfate, i.e. chondroitin sulfate C; Derivatives thereof
}
C08B 37/0072
. . .
{
Hyaluronic acid, i.e. HA or hyaluronan; Derivatives thereof, e.g. crosslinked hyaluronic acid (hylan) or hyaluronates
}
Collapse
C08B 37/0075
. . .
{
Heparin; Heparan sulfate; Derivatives thereof, e.g. heparosan; Purification or extraction methods thereof
}
C08B 37/0078
. . . .
{
Degradation products
}
C08B 37/0081
. . . .
{
Reaction with amino acids, peptides, or proteins
}
C08B 37/0084
. .
{
Guluromannuronans, e.g. alginic acid, i.e. D-mannuronic acid and D-guluronic acid units linked with alternating alpha- and beta-1,4-glycosidic bonds; Derivatives thereof, e.g. alginates
}
Collapse
C08B 37/0087
. .
{
Glucomannans or galactomannans; Tara or tara gum, i.e. D-mannose and D-galactose units, e.g. from Cesalpinia spinosa; Tamarind gum, i.e. D-galactose, D-glucose and D-xylose units, e.g. from Tamarindus indica; Gum Arabic, i.e. L-arabinose, L-rhamnose, D-galactose and D-glucuronic acid units, e.g. from Acacia Senegal or Acacia Seyal; Derivatives thereof
}
C08B 37/009
. . .
{
Konjac gum or konjac mannan, i.e. beta-D-glucose and beta-D-mannose units linked by 1,4 bonds, e.g. from Amorphophallus species; Derivatives thereof
}
C08B 37/0093
. . .
{
Locust bean gum, i.e. carob bean gum, with (beta-1,4)-D-mannose units in the main chain branched with D-galactose units in (alpha-1,6), e.g. from the seeds of carob tree or Ceratonia siliqua; Derivatives thereof
}
C08B 37/0096
. . .
{
Guar, guar gum, guar flour, guaran, i.e. (beta-1,4) linked D-mannose units in the main chain branched with D-galactose units in (alpha-1,6), e.g. from Cyamopsis Tetragonolobus; Derivatives thereof
}
Collapse
C08B 37/12
.
Agar-agar ; Derivatives thereof ( not used )
C08B 37/125
. .
{
Other polysaccharides of algae such as carragenan
}
 ( not used )
Collapse
C08B 37/14
.
Hemicellulose ; Derivatives thereof ( not used )
C08B 37/143
. .
{
composed by pentose units, e.g. xylose, xylan, pentosans, arabinose
}
 ( not used )
C08B 37/146
. .
{
composed by gluco and/or galactomannans, for example guar gum, locust bean gum
}
 ( not used )
C08B 37/18
.
Reserve carbohydrates, e.g. glycogen, inulin, laminarin ; Derivatives thereof ( not used )
This page is owned by Office of Patent Classification.
Last Modified: 04/16/2013 4:31:16 PM