ClassID:

30020

B01D71/52 - page 2 - CPC Classification

Classification description:

Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor; Organic material Polyethers

Recent Application in this class:
#301
20090131544
2009-05-21

Extrusion of a thermoplastic polymer bearing acid ionic groupings

#302
20090127186
2009-05-21

Separation membrane for use in treatment of liquid comprising aromatic ether polymer hydrophilized with hydrophilizing agent

#303
20090057225
2009-03-05

Filtration Membrane

#304
20080318134
2008-12-25

Polymer Membranes

#305
20080312349
2008-12-18

METHOD OF MAKING AND USING MEMBRANE

#306
20080233271
2008-09-25

Layered Structures And Method For Producing The Same

#307
20080207822
2008-08-28

COMPOSITION AND ASSOCIATED METHOD

#308
20080203012
2008-08-28

MEMBRANE, APPARATUS, AND ASSOCIATED METHOD

#309
20080142443
2008-06-19

Polyarylether membranes

#310
20080142442
2008-06-19

Polyarylether membranes

#311
20080142429
2008-06-19

Functional polyarylethers

#312
20080139677
2008-06-12

Ion-Conducting Polymeric Materials

#313
20080090972
2008-04-17

Oligomers and Polymers Containing Sulfinate Groups, and Methods for Producing the Same

#314
20070292731
2007-12-20

Ether nitrile co-polymers containing sulfonic acid groups for PEM application

#315
20070275286
2007-11-29

Method for Cross-Linking Sulfonated Polymers

#316
20070269700
2007-11-22

Polymeric materials

#317
20070219322
2007-09-20

Graft copolymers, methods for grafting hydrophilic chains onto hydrophobic polymers, and articles thereof

#318
20070208153
2007-09-06

Functionalized main chain polymers

#319
20070202374
2007-08-30

Ion-exchange materials

#320
20070185264
2007-08-09

Polymer composite, film thereof and separation membrane made therefrom

#321
20070151447
2007-07-05

Gas separation membranes and processes for controlled environmental management

#322
20070129529
2007-06-07

Functionalized porous poly(aryl ether ketone) materials and their use

#323
20070117958
2007-05-24

Method for producing a polymer system capable of proton exchange, based on polyaryl ether ketones

#324
20060283323
2006-12-21

Polyoxometalate material for gaseous stream purification at high temperature

#325
20060251969
2006-11-09

Block copolymers with acidic groups

#326
20060249444
2006-11-09

Triblock copolymers with acidic groups

#327
20060236857
2006-10-26

Membranes for selective gas separation

#328
20060231484
2006-10-19

Composites and composite membranes

#329
20060166048
2006-07-27

Polyarylene ether compound containing sulfonic acid group, composition containing same, and method for manufacturing those

#330
20060127728
2006-06-15

Membrane-electrode assembly for fuel cell

#331
20060127727
2006-06-15

Polymer electrolyte and fuel cell employing the same

#332
20060121217
2006-06-08

Composite material comprising layered hydrophilic coatings

#333
20060119015
2006-06-08

Method for producing hollow fibres

#334
20060096913
2006-05-11

Organic-inorganic membranes

#335
20060094852
2006-05-04

Functionalized porous poly(aryl ether ketone) materials and their use

#336
20060094792
2006-05-04

Proton conducting membrane for fuel cells

#337
20060068668
2006-03-30

Microfiber supported nanofiber membrane

#338
20060043344
2006-03-02

Sulfonic group-containing polyarylene block copolymer, process for production thereof, solid polymer electrolyte and proton conductive membrane

#339
20060000777
2006-01-05

Liquid-phase separation of low molecular weight organic compounds

#340
20050287410
2005-12-29

Polymer electrolyte membrane and fuel cell using the same

#341
20050260475
2005-11-24

Polymer electrolyte membrane, method for producing same, and membrane electrode assembly and polymer electrolyte fuel cell comprising same

#342
20050260474
2005-11-24

Polymer electrolyte membrane and polymer electrolyte fuel cell comprising same

#343
20050252377
2005-11-17

Air dehydration membrane

#344
20050244697
2005-11-03

Composite polymer electrolytes for proton exchange membrane fuel cells

#345
20050242021
2005-11-03

Hollow fibres

#346
20050227138
2005-10-13

Polymer electrolyte fuel cell

#347
20050181256
2005-08-18

Ion conductive random copolymers

#348
20050165172
2005-07-28

Oligomers and polymers containing sulfinate groups, and method for producing the same

#349
20050158632
2005-07-21

Alkaline polymer electrolyte membrane and its application

#350
20050136314
2005-06-23

Ion-exchange membrane for an electrochemical fuel cell

#351
20050131196
2005-06-16

Polymer electrolytes and process for their preparation

#352
20050124769
2005-06-09

Functionalized main chain polymers

#353
20050106469
2005-05-19

Proton conductive composition and proton conductive membrane

#354
20050069745
2005-03-31

Polymer electrolyte membranes for use in fuel cells

#355
20050053818
2005-03-10

Ion exchange composite material based on proton conductive functionalized inorganic support compounds in a polymer matrix

#356
20050031925
2005-02-10

Composite solid polymer electrolyte membranes

#357
20050020716
2005-01-27

Combining method

#358
20050020715
2005-01-27

Manufacturing method for electrolyte membrane

#359
17836575
2022-11-08

Mesoporous poly (aryl ether ketone) hollow fiber membranes and use thereof in mass transfer processes

#360
17669966
2023-05-30

Integrated membrane and steam reformer for hydrogen production

#361
15392364
2018-01-02

Porous PTFE membranes for metal removal

#362
14519743
2017-03-21

Surface functionalization of metal organic frameworks for mixed matrix membranes