IPC Classification

Class code (prefix) Descriptions Number of results
  • All sections
  • C - Chemistry; metallurgy
  • C12S - Processes using enzymes or micro-organisms to liberate, separate or purify a pre-existing compound or composition (biological treatment of water, waste water, or sewage C02F 3/00, of sludge C02F 11/02; processes using enzymes or micro-organisms to separate optical isomers from a racemic mixture C12P 41/00); processes using enzymes or micro-organisms to treat textiles or to clean solid surfaces of materials
C12S 1/00 Treatment of petroleum oils, shale oils or sand oils
C12S 1/02 Desulfurising
C12S 3/00 Treatment of animal or plant materials or micro-organisms
C12S 3/02 Recovery or purification of carbohydrate material
C12S 3/04 Cellulose, e.g. plant fibres
C12S 3/06 Treatment of hemp or flax
C12S 3/08 in the production of paper pulp
C12S 3/10 Treatment of sugar or molasses
C12S 3/12 Treatment of pectin or starch
C12S 3/14 Recovery or purification of proteinaceous material
C12S 3/16 Collagen or gelatin
C12S 3/18 Recovery or purification of glyceridic oils, fats, ester-type waxes or fatty acids
C12S 3/20 Removal of nucleic acids from intact or disrupted cells
C12S 3/22 Treatment of blood fractions
C12S 3/24 Treatment of animal secretions or organs
C12S 5/00 Treatment of emulsions, gases or foams
C12S 7/00 Treatment of hides, e.g. depilating, bating
C12S 9/00 Cleaning solid surfaces of materials
C12S 11/00 Treatment of textiles, e.g. cleaning
C12S 99/00 Subject matter not provided for in other groups of this subclass