ClassID:

30926

B01D2325/18 - CPC Classification

Classification description:

Details relating to properties of membranes Membrane materials having mixed charged functional groups

Recent Application in this class:
#1
20260151743
2026-06-04

UREMIC METABOLITE-ZWITTERIONIC HEMOCOMPATIBLE DIALYSIS MEMBRANES

#2
20250304734
2025-10-02

CROSS-LINKABLE AND CHARGED ZWITTERIONIC POLYMERS AND MEMBRANES COMPRISING SAME

#3
20250108337
2025-04-03

PH-RESPONSIVE ADSORPTIVE COMPOSITE POLYMERIC MEMBRANES

#4
20250059076
2025-02-20

SYSTEM AND METHOD FOR RECOVERY OF FERTILIZER BUILDING BLOCKS FROM WASTE

#5
20240181404
2024-06-06

CROSS-LINKED ZWITTERIONIC POLYMER NETWORK AND THEIR USE IN MEMBRANE FILTERS

#6
20240149225
2024-05-09

Fabrication of filtration membranes

#7
20240042393
2024-02-08

METHODS OF MODIFICATION OF ION EXCHANGE MEMBRANES

#8
20230405575
2023-12-21

Membranes

#9
20230347333
2023-11-02

Membranes

#10
20230241557
2023-08-03

MEMBRANES AND METHOD FOR REMOVING TRACE METALS

#11
20230182091
2023-06-15

CROSS-LINKABLE ZWITTERIONIC POLYMERS AND THEIR USE IN MEMBRANE FILTERS

#12
20230182083
2023-06-15

METHOD FOR PRODUCING A POLYELECTROLYTE COMPLEX MEMBRANE

#13
20220331749
2022-10-20

MATERIALS FOR SEPARATING MIXTURES VIA SELECTIVE ABSORPTION

#14
20220220241
2022-07-14

ZWITTERIONIC CHARGED COPOLYMER MEMBRANES

#15
20210379539
2021-12-09

Bilayer electrospun membranes for treating fracking wastewater via membrane distillation

#16
20210339206
2021-11-04

Antifouling polymer for reverse osmosis and membrane comprising same

#17
20210322933
2021-10-21

ZWITTERION-FUNCTIONALIZED COPOLYMER HOLLOW-FIBER MEMBRANES AND ASSOCIATED METHOD

#18
20210322931
2021-10-21

ZWITTERIONIC POLYELECTROLYTE COATED FILTRATION MEDIUM FOR FRACTURING FLUID AND DRILLING MUD TREATMENT

#19
20210322930
2021-10-21

ZWITTERIONIC POLYELECTROLYTE COATED FILTRATION MEDIUM FOR SLOP WATER TREATMENT

#20
20210178342
2021-06-17

REMOVING METAL IONS WITH A MEMBRANE BASED ON ANIONIC POLYARYLENE ETHERSULFONE AND A CATIONIC POLYMER WITH AMINO GROUPS

#21
20210079220
2021-03-18

Zwitterion-functionalized multicomponent copolymers and associated polymer blends and membranes

#22
20210039054
2021-02-11

Zwitterion-containing membranes

#23
20200384454
2020-12-10

Metal organic framework membranes

#24
20200384425
2020-12-10

Zwitterionic polymer additives for fouling resistant filtration membranes

#25
20200324250
2020-10-15

Assembly of charge mosaic membranes from ionic polymers

#26
20200207986
2020-07-02

Zwitterionic thin film composite membranes with high performance

#27
20200164317
2020-05-28

Porous polyelectrolyte complex films and foams and related methods

#28
20200113781
2020-04-16

Sterile solutions product bag

#29
20190329184
2019-10-31

Hydrophilic polymer and membrane for oil-water separation and method of producing the same

#30
20190282966
2019-09-19

Ion exchange membrane and filter module using same

#31
20190262781
2019-08-29

Fabrication of filtration membranes

#32
20190224631
2019-07-25

Acrylonitrile-based membrane with low thrombogenicity

#33
20190175816
2019-06-13

Blood processing filter

#34
20190039029
2019-02-07

Amphiphilic diblock copolymer and use of same for producing polymeric filter membranes

#35
20190022634
2019-01-24

Ion exchange membrane and method for manufacturing same

#36
20190022594
2019-01-24

Ultrathin, conductive and fouling-resistant zwitterionic polymer films

#37
20190021947
2019-01-24

Sterile solutions product bag

#38
20180318775
2018-11-08

Aqueous phase separation method

#39
20180258285
2018-09-13

Zwitterion-functionalized multicomponent copolymers and associated polymer blends and membranes

#40
20180133656
2018-05-17

Zwitterionic fiber membranes

#41
20180001278
2018-01-04

Zwitterionic copolymers for fouling resistant filtration membranes

#42
20170361281
2017-12-21

Filtration membranes with functionalized star polymers

#43
20170080392
2017-03-23

Zwitterion-functionalized block copolymer membranes and associated block copolymer composition

#44
20170050154
2017-02-23

Hydrophilic-oleophobic copolymer composition and uses thereof

#45
20170014772
2017-01-19

ANION EXCHANGE MEMBRANES, METHODS OF PREPARATION AND USES THEREOF

#46
20160303523
2016-10-20

Zwitterion-containing membranes

#47
20160136589
2016-05-19

ZWITTERIONIC SULFONE POLYMER FLAT SHEET MEMBRANE

#48
20160136588
2016-05-19

ZWITTERIONIC SULFONE POLYMER BLEND AND HOLLOW-FIBER MEMBRANE

#49
20160008769
2016-01-14

Filtration membranes with functionalized star polymers

#50
20160001238
2016-01-07

Polymer functional film and method for producing same

#51
20150353696
2015-12-10

Functional polymer membrane, manufacturing method therefor, ion exchange membrane and proton conductive membrane equipped with functional polymer membrane, and ion exchange device

#52
20150328597
2015-11-19

Zwitterion-functionalized block copolymer membranes and associated block copolymer composition

#53
20150246324
2015-09-03

Charged hollow fiber membrane having hexagonal voids

#54
20150231529
2015-08-20

Ionic liquid grafted mesoporous silica compositions for polar gas/non-polar gas and olefin/paraffin separations

#55
20140329010
2014-11-06

Hybrid TFC RO membranes with non-metallic additives

#56
20140262762
2014-09-18

Facilitated olefin transport membrane including aluminium salt

#57
20140230652
2014-08-21

Drying substances, preparation and use thereof

#58
20120312691
2012-12-13

Reliable point of use membrane modification

#59
20120285890
2012-11-15

Hybrid TFC RO membranes with non-metallic additives

#60
20120285881
2012-11-15

Multilayered charge-mosaic membrane and manufacturing method therefor

#61
20120248031
2012-10-04

Composites and composite membranes

#62
20120034481
2012-02-09

CHARGE-MOSAIC MEMBRANE

#63
20110253630
2011-10-20

MEMBRANES WITH FUNCTIONALIZED CARBON NANOTUBE PORES FOR SELECTIVE TRANSPORT

#64
20110220574
2011-09-15

Membranes with functionalized carbon nanotube pores for selective transport

#65
20110209610
2011-09-01

Separating gas using immobilized buffers

#66
20110147308
2011-06-23

Charged Porous Polymeric Membranes and Their Preparation

#67
20110094960
2011-04-28

Method of forming a rewettable asymmetric membrane

#68
20100226823
2010-09-09

Drying substances, preparation and use thereof

#69
20100096066
2010-04-22

MEMBRANE STRUCTURE AND METHOD OF MAKING

#70
20100092833
2010-04-15

Composites and composite membranes

#71
20100044314
2010-02-25

Polyarylether compositions bearing zwitterion functionalities

#72
20100005959
2010-01-14

Separating gas using immobilized buffers

#73
20090301297
2009-12-10

Producing articles that include ionic liquids

#74
20090234032
2009-09-17

HYDROPHILIC, COMPOSITE, MICROPOROUS MEMBRANE AND ITS PRODUCTION METHOD

#75
20090181315
2009-07-16

PRODUCTION OF MICRO- AND NANOPORE MASS ARRANGEMENTS BY SELF-ORGANIZATION OF NANOPARTICLES AND SUBLIMATION TECHNOLOGY

#76
20090162662
2009-06-25

Low biofouling filtration membranes and their forming method

#77
20090032466
2009-02-05

Agent for increasing rejection with a permeable membrane, process for increasing the rejection, permeable membrane and process for water treatment

#78
20080312349
2008-12-18

METHOD OF MAKING AND USING MEMBRANE

#79
20080179188
2008-07-31

Methods, compositions and devices, including electroosmotic pumps, comprising coated porous surfaces

#80
20070141456
2007-06-21

Bipolar membrane

#81
20070131609
2007-06-14

Membrane structure and method of making

#82
20070119302
2007-05-31

Polymers containing ionic groups for gas separation and storage

#83
20070029256
2007-02-08

Composite porous membrane and process for producing the same

#84
20060172084
2006-08-03

Composites and composite membranes