IPC 6 English version
  B01D 47/00 - B01D 57/02  
  
B01D05900-B01D11190
  B01D 113:00 - B01D 187:00  

SECTION B– PERFORMING OPERATIONS; TRANSPORTING


B 01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL (furnaces, kilns, ovens, retorts, in general F 27)


B 01 DSEPARATION (separating solids from solids by wet methods B 03 B, B 03 D, by pneumatic jigs or tables B 03 B, by other dry methods B 07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B 03 C; centrifuges, vortex apparatus B 04; presses per se for squeezing-out liquid from liquid-containing material B 30 B 9/02; treatment of water C 02 F, e.g. softening by ion-exchange C 02 F 1/42; arrangement or mounting of filters in air-conditioning, air-humidification or ventilation F 24 F 13/28) [5]


59/

00Separation of different isotopes of the same chemical element (preventing occurrence of critical conditions when producing fissile material G 21; shielding from radioactivity G 21 F)

59/

02.Separation by phase transition

59/

04..by distillation

59/

06..by fractional melting; by zone melting

59/

08..by fractional crystallisation, by precipitation, by zone freezing

59/

10.Separation by diffusion

59/

12..by diffusion through barriers

59/

14...Construction of the barrier

59/

16..by thermal diffusion

59/

18..by separation jets

59/

20.Separation by centrifuging

59/

22.Separation by extracting

59/

24..by solvent extraction

59/

26..by sorption, i.e. absorption, adsorption, persorption

59/

28.Separation by chemical exchange

59/

30..by ion exchange

59/

32..by exchange between fluids

59/

33...involving dual temperature exchange [2]

59/

34.Separation by photochemical methods

59/

36.Separation by biological methods

59/

38.Separation by electrochemical methods (in general B 01 J)

59/

40..by electrolysis

59/

42..by electromigration; by electrophoresis

59/

44.Separation by mass spectrography (particle spectrometer or separator tubes H 01 J 49/00)

59/

46..using only electrostatic fields

59/

48..using electrostatic and magnetic fields

59/

50.Separation involving two or more processes covered by different groups selected from groups B 01 D 59/02, B 01 D 59/10, B 01 D 59/20, B 01 D 59/22, B 01 D 59/28, B 01 D 59/34, B 01 D 59/36, B 01 D 59/38, B 01 D 59/44


Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus specially adapted therefor; Semi-permeable membranes or their production (separation of gases or vapours by diffusion B 01 D 53/22; treatment of milk by dialysis, reverse osmosis or ultrafiltration A 23 C 9/142, by electrodialysis A 23 C 9/144; artificial kidneys A 61 M 1/14; treatment of water by dialysis, osmosis or reverse osmosis C 02 F 1/44, by electrodialysis C 02 F 1/469; apparatus for enzymology or microbiology with dialysis means C 12 M 1/12; production or purification of sugar juices, e.g. by osmosis, C 13 D 3/16; extraction of sugar from molasses, e.g. by osmosis, C 13 J 1/08; diaphragms for electrolysis C 25 B 13/00, C 25 C 7/04; osmosis as energy source F 03 G 7/00) [5]

Note

 In groups B 01 D 61/00 to B 01 D 71/00, in the absence of an indication to the contrary, classification is made in the last appropriate place (in respect of group B 01 D 71/00, see also Note (1) following that group). [5]


61/

00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor [5]

61/

02.Reverse osmosis; Hyperfiltration [5]

61/

04..Feed pretreatment [5]

61/

06..Energy recovery [5]

61/

08..Apparatus therefor [5]

61/

10..Accessories; Auxiliary operations [5]

61/

12..Controlling or regulating [5]

61/

14.Ultrafiltration; Microfiltration [5]

61/

16..Feed pretreatment [5]

61/

18..Apparatus therefor [5]

61/

20..Accessories; Auxiliary operations [5]

61/

22..Controlling or regulating [5]

61/

24.Dialysis [5]

61/

26..Dialysate solution flow, e.g. preparation, regeneration [5]

61/

28..Apparatus therefor [5]

61/

30..Accessories; Auxiliary operation [5]

61/

32..Controlling or regulating [5]

61/

34...Measuring ultrafiltrate during dialysis [5]

61/

36.Pervaporation; Membrane distillation; Liquid permeation [5]

61/

38.Liquid-membrane separation [5]

61/

40..using emulsion-type membranes [5]

61/

42.Electrodialysis; Electro-osmosis [5]

61/

44..Ion-selective electrodialysis [5]

61/

46...Apparatus therefor [5]

61/

48....having one or more compartments filled with ion-exchange material [5]

61/

50....Stacks of the plate-and-frame type [5]

61/

52...Accessories; Auxiliary operation [5]

61/

54...Controlling or regulating [5]

61/

56..Electro-osmotic dewatering [5]

61/

58.Multistep processes [5]


63/

00Apparatus in general for separation processes using semi-permeable membranes [5]

63/

02.Hollow fibre modules [5]

63/

04..comprising multiple hollow fibre assemblies [5]

63/

06.Tubular membrane modules [5]

63/

08.Flat membrane modules [5]

63/

10.Spiral-wound membrane modules [5]

63/

12..comprising multiple spiral-wound assemblies [5]

63/

14.Pleat-type membrane modules [5]

63/

16.Rotary, reciprocated or vibrated modules [5]


65/

00Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes [5]

65/

02.Membrane cleaning or sterilisation [5]

65/

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

65/

06..with special washing compositions [5]

65/

08.Prevention of membrane fouling or of concentration polarisation [5]

65/

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


67/

00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus [5]

 

69/

00Semi-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 B 01 D 67/00. [5]

69/

02.charaterised by their properties [5]

69/

04.Tubular membranes [5]

69/

06.Flat membranes [5]

69/

08.Hollow fibre membranes (manufacture of hollow fibres D 01 D 5/24, D 01 F 1/08) [5]

69/

10.Supported membranes; Membrane supports [5]

69/

12.Composite membranes; Ultra-thin membranes [5]

 

69/

14.Dynamic membranes [5]


71/

00Semi-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 B 01 D 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 B 01 D 67/00. [5]

71/

02.Inorganic material [5]

71/

04..Glass [5]

71/

06.Organic material [5]

71/

08..Polysaccharides [5]

71/

10...Cellulose; Modified cellulose [5]

71/

12...Cellulose derivatives [5]

71/

14....Esters of organic acids [5]

71/

16.....Cellulose acetate [5]

71/

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

71/

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

71/

22....Cellulose ethers [5]

71/

24..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/

26..Polyalkenes [5]

71/

28..Polymers of vinyl aromatic compounds [5]

71/

30..Polyalkenyl halides [5]

71/

32...containing fluorine atoms [5]

71/

34....Polyvinylidene fluoride [5]

71/

36....Polytetrafluoroethene [5]

71/

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

71/

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

71/

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

71/

44..Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B 01 D 71/26 to B 01 D 71/42 [5]

71/

46..Epoxy resins [5]

71/

48..Polyesters [5]

71/

50..Polycarbonates [5]

71/

52..Polyethers [5]

71/

54..Polyureas; Polyurethanes [5]

71/

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

71/

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

71/

60...Polyamines [5]

71/

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

71/

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

71/

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

71/

68...Polysulfones; Polyethersulfones [5]

71/

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

71/

72..Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B 01 D 71/46 to B 01 D 71/70 [5]

71/

74..Natural macromolecular material or derivatives thereof (B 01 D 71/08, B 01 D 71/24 take precedence) [5]

71/

76..Macromolecular material not specifically provided for in a single one of groups B 01 D 71/08 to B 01 D 71/74 (rubbers in general B 01 D 71/24) [5]

71/

78...Graft polymers [5]

71/

80...Block polymers [5]

71/

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


Indexing scheme associated with group B 01 D 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:

00Types of filters having loose filtering material [5]

101:

02.Carbon filters [5]

101:

04.Sand or gravel filters [5]


Indexing scheme associated with group B 01 D 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:

00Inorganic acids [6]

111:

20.hydrochloric [6]

111:

40.nitric [6]

111:

60.sulfuric [6]

111:

80.phosphoric [6]

111:

90.Hydrogen sulfide [6]

  B01D 47/00 - B01D 57/02    B01D 113:00 - B01D 187:00