IPC 7 English version B01D 63/00-B01D 187:00

IPC ⁷ English version

B01D 47/00 - B01D 61/58

B01D06300-B01D18700

SECTION B – PERFORMING OPERATIONS; TRANSPORTING

B 01

PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL (furnaces, kilns, ovens, retorts, in general F27)

B 01 D

SEPARATION (separating solids from solids by wet methods B03B, B03D, by pneumatic jigs or tables B03B, by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B 9/02; treatment of water C02F, e.g. softening by ion-exchange C02F 1/42; arrangement or mounting of filters in air-conditioning, air-humidification or ventilation F24F 13/28) [5]

63/

Apparatus in general for separation processes using semi-permeable membranes [5]

63/

Hollow fibre modules [5]

63/

comprising multiple hollow fibre assemblies [5]

63/

Tubular membrane modules [5]

63/

Flat membrane modules [5]

63/

Spiral-wound membrane modules [5]

63/

comprising multiple spiral-wound assemblies [5]

63/

Pleat-type membrane modules [5]

63/

Rotary, reciprocated or vibrated modules [5]

65/

Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes [5]

65/

Membrane cleaning or sterilisation [5]

65/

with movable bodies, e.g. foam balls [5]

65/

with special washing compositions [5]

65/

Prevention of membrane fouling or of concentration polarisation [5]

65/

Testing of membranes or membrane apparatus; Detecting or repairing leaks [5]

67/

Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus [5]

69/

Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor [5]

Notes

(1)

In this group, the following term is used with the meaning indicated:

–

"properties" covers those of a mechanical, physical or chemical nature. [5]

(2)

Manufacturing processes, if considered of interest, are also classified in group B01D 67/00. [5]

69/

characterised by their properties [5]

69/

Tubular membranes [5]

69/

Flat membranes [5]

69/

Hollow fibre membranes (manufacture of hollow fibres D01D 5/24, D01F 1/08) [5]

69/

Supported membranes; Membrane supports [5]

69/

Composite membranes; Ultra-thin membranes [5]

69/

Dynamic membranes [5]

71/

Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor [5]

Notes

(1)

In this group, if the material is a composition it is classified according to the constituent present in highest proportion. This constituent is classified according to the last place rule (see Note before group B01D 61/00). If there is more than one constituent present in equal highest proportions, then each of these constituents is classified according to the last place rule. [5]

(2)

Manufacturing processes, if considered of interest, are also classified in group B01D 67/00. [5]

71/

Inorganic material [5]

71/

Glass [5]

71/

Organic material [5]

71/

Polysaccharides [5]

71/

Cellulose; Modified cellulose [5]

71/

Cellulose derivatives [5]

71/

Esters of organic acids [5]

71/

Cellulose acetate [5]

71/

Mixed esters, e.g. cellulose acetate-butyrate [5]

71/

Esters of inorganic acids, e.g. cellulose nitrate [5]

71/

Cellulose ethers [5]

71/

Rubbers [5]

Note

In this group the following term is used with the meaning indicated:

–

"rubber" covers:

(a)

natural or conjugated diene rubber;

(b)

rubber in general (for specific rubber, see the group provided for such macromolecular compound). [5]

71/

Polyalkenes [5]

71/

Polymers of vinyl aromatic compounds [5]

71/

Polyalkenyl halides [5]

71/

containing fluorine atoms [5]

71/

Polyvinylidene fluoride [5]

71/

Polytetrafluoroethene [5]

71/

Polyalkenylalcohols; Polyalkenylesters; Polyalkenylethers; Polyalkenylaldehydes; Polyalkenylketones; Polyalkenylacetals; Polyalkenylketals [5]

71/

Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters [5]

71/

Polymers of nitriles, e.g. polyacrylonitrile [5]

71/

Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B01D 71/26 to B01D 71/42 [5]

71/

Epoxy resins [5]

71/

Polyesters [5]

71/

Polycarbonates [5]

71/

Polyethers [5]

71/

Polyureas; Polyurethanes [5]

71/

Polyamides, e.g. polyester-amides [5]

71/

Other polymers having nitrogen in the main chain, with or without oxygen or carbon only [5]

71/

Polyamines [5]

71/

Polycondensates having nitrogen-containing heterocyclic rings in the main chain [5]

71/

Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors [5]

71/

Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only [5]

71/

Polysulfones; Polyethersulfones [5]

71/

Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only [5]

71/

Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B01D 71/46 to B01D 71/70 [5]

71/

Natural macromolecular material or derivatives thereof (B01D 71/08, B01D 71/24 take precedence) [5]

71/

Macromolecular material not specifically provided for in a single one of groups B01D 71/08 to B01D 71/74 (rubbers in general B01D 71/24) [5]

71/

Graft polymers [5]

71/

Block polymers [5]

71/

characterised by the presence of specified groups, e.g. introduced by chemical after-treatment [5]

Indexing scheme associated with group B01D 24/00. The indexing codes should be unlinked. [5]

Note

Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code. [6]

101:

Types of filters having loose filtering material [5]

101:

Carbon filters [5]

101:

Sand or gravel filters [5]

Indexing scheme associated with group B01D 53/34 and subgroups, relating to the reactants used for the chemical purification of waste gases. The indexing codes should be unlinked. [6]

Note

Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code. [6]

111:

Inorganic acids [6]

111:

hydrochloric [6]

111:

nitric [6]

111:

sulfuric [6]

111:

phosphoric [6]

111:

Hydrogen sulfide [6]

113:

Organic acids [6]

115:

Inorganic bases or salts [6]

115:

Ammonia or ammonium hydroxide [6]

115:

Carbonates or bicarbonates [6]

115:

of alkali metals [6]

115:

of calcium [6]

115:

of magnesium [6]

115:

Hydroxides or oxides (ammonium hydroxide B01D 115:10) [6]

115:

of alkali metals [6]

115:

of calcium [6]

115:

of magnesium [6]

117:

Organic bases [6]

119:

Sulfur dioxide [6]

Indexing scheme associated with groups B01D 53/34 to B01D 53/94, relating to the catalysts used for the chemical purification of waste gases. The indexing codes should be unlinked. [6]

Note

Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code. [6]

131:

Metals or alloys [6]

131:

Platinum or alloys thereof [6]

131:

Palladium or alloys thereof [6]

133:

Carbon [6]

135:

Metal oxides or hydroxides [6]

135:

of aluminium [6]

135:

of iron [6]

135:

of titanium [6]

135:

of vanadium [6]

137:

Silica [6]

139:

Metal sulfides [6]

141:

Zeolites [6]

Indexing scheme associated with groups B01D 53/00, B01D 53/34 to B01D 53/73 and B01D 53/92, relating to the type of treatment. The indexing codes should be unlinked. [6]

Note

Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code. [6]

151:

Gas phase, e.g. by using aerosols [6]

153:

Liquid phase, e.g. by scrubbing [6]

155:

Semi-solid phase, i.e. by using slurries [6]

157:

Solid phase [6]

157:

Fluidised bed [6]

159:

Biological [6]

161:

Catalytic [6]

Indexing scheme associated with groups B01D 53/00 to B01D 53/24, B01D 53/30 to B01D 53/34 and B01D 53/73 to B01D 53/94, relating to the components removed. The indexing codes should be unlinked. [6]

Note

Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code. [6]

171:

Single element gases other than halogens [6]

171:

Nitrogen [6]

171:

Oxygen [6]

171:

Ozone [6]

171:

Hydrogen [6]

171:

Noble gases [6]

173:

Sulfur compounds [6]

173:

Sulfur oxides (B01D 177:00 takes precedence) [6]

173:

Hydrogen sulfide [6]

175:

Nitrogen compounds [6]

175:

Nitrogen oxides (B01D 177:00 takes precedence) [6]

175:

Ammonia [6]

177:

Simultaneously removing sulfur oxides and nitrogen oxides [6]

179:

Carbon oxides [6]

181:

Heavy metals or compounds thereof [6]

183:

Halogens or halogen compounds [6]

183:

Organic halogen compounds [6]

185:

Organic compounds not provided for in groups B01D 173:00 to B01D 183:10 [6]

185:

Hydrocarbons [6]

187:

Water [6]

B01D 47/00 - B01D 61/58