ClassID:

30925

B01D2325/16 - CPC Classification

Classification description:

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

Recent Application in this class:
#1
20260062547
2026-03-05

CROSSLINKING OF AROMATIC POLYMERS FOR ANION EXCHANGE MEMBRANES

#2
20260021451
2026-01-22

ANION-EXCHANGE MEMBRANE AND MANUFACTURING METHOD THEREFOR

#3
20250367610
2025-12-04

Block Copolymers Grafted to Porous Polymeric Substrate

#4
20250319443
2025-10-16

METHOD FOR MANUFACTURING A THIN-FILM COMPOSITE MEMBRANE FOR WATER TREATMENT, HAVING EXTREME ACID AND ALKALINE STABILITY

#5
20250296053
2025-09-25

ANION EXCHANGE MEMBRANE

#6
20250214030
2025-07-03

URETHANE CATIONIC POLY(IONIC LIQUIDS), THEIR DENSE AND COMPOSITE MEMBRANES, THEIR USE AND METHOD FOR REMOVING CO2 FROM NATURAL GAS OR AN EXHAUST GAS

#7
20250099918
2025-03-27

COATED POROUS FILTER MEMBRANES AND RELATED METHODS

#8
20250059076
2025-02-20

SYSTEM AND METHOD FOR RECOVERY OF FERTILIZER BUILDING BLOCKS FROM WASTE

#9
20250032989
2025-01-30

ELECTROCHEMICALLY ASSISTED ION EXCHANGE WATER TREATMENT DEVICE HAVING SPECIFIC ARRANGEMENT OF ELECTROCHEMICAL CELLS

#10
20250011211
2025-01-09

APPARATUS AND METHOD FOR RECOVERING MINERALS USING NANOFILTRATION MEMBRANE

#11
20240382910
2024-11-21

HYDROPHILIC FILTER MEMBRANE WITH PENDANT HYDROPHILIC GROUPS, AND RELATED METHODS OF PREPARATION AND USE

#12
20240367112
2024-11-07

AMPHIPHILIC POLYAMPHOLYTES AND RELATED MEMBRANES

#13
20240240839
2024-07-18

ANIONIC ELECTROCHEMICAL COMPRESSOR AND REFRIGERATION SYSTEM EMPLOYING SAME

#14
20240226818
2024-07-11

Anion Exchange Membrane and Methods of Making and Using the Same

#15
20240181403
2024-06-06

ANION EXCHANGE MEMBRANE AND METHOD FOR PRODUCING THE SAME

#16
20240173677
2024-05-30

STEREOLITHOGRAPHY ADDITIVE MANUFACTURING OF ANION EXCHANGE MEMBRANE RESIN

#17
20240166811
2024-05-23

LONG-TERM ANION-CONDUCTING COMPOUND, ITS PREPARATION AND ITS USE IN ELECTROCHEMISTRY

#18
20240075433
2024-03-07

MEMBRANE WITH IMMOBILIZED ANTICOAGULANT AND PROCESS FOR PRODUCING SAME

#19
20240042393
2024-02-08

METHODS OF MODIFICATION OF ION EXCHANGE MEMBRANES

#20
20230390707
2023-12-07

PREPARATION OF METALLOCENE CONTAINING CATIONIC POLYMERS FOR ANION EXCHANGE APPLICATIONS

#21
20230383013
2023-11-30

POROUS POLYMERIC CELLULOSE PREPARED VIA CELLULOSE CROSSLINKING

#22
20230338902
2023-10-26

DIFFUSION TRANSFER FUNCTIONALIZED MEMBRANE

#23
20230285907
2023-09-14

SINGLE PIECE-TYPE BIPOLAR FILM ROLL WITH MESH CLOTH SUPPORT AND MANUFACTURING METHOD THEREFOR

#24
20230226499
2023-07-20

Ion-Selective Composite Membrane

#25
20230158483
2023-05-25

CELLULOSE-BASED ION-EXCHANGE MEMBRANE, PRODUCTION METHOD FOR SAME, EXOSOME PURIFICATION DEVICE, AND EXOSOME PURIFICATION METHOD

#26
20220401888
2022-12-22

PRECISION FILTER TO FILTER PROCESS LIQUID FOR PRODUCING CIRCUIT BOARDS

#27
20220379260
2022-12-01

HUMIDIFICATION AND SELECTIVE PERMEATION MODULE

#28
20220307732
2022-09-29

Anionic electrochemical compressor and refrigeration system employing same

#29
20220212145
2022-07-07

APPARATUS FOR REMOVING FINE PARTICLE AND METHOD FOR REMOVING FINE PARTICLE

#30
20220184595
2022-06-16

MEMBRANES FOR ACID-SENSITIVE SOLVENTS

#31
20220134287
2022-05-05

Coated porous polymeric membranes

#32
20220120649
2022-04-21

LIGAND-FUNCTIONALIZED SUBSTRATES WITH ENHANCED BINDING CAPACITY

#33
20220097008
2022-03-31

CHARGED ISOPOROUS MATERIALS FOR ELECTROSTATIC SEPARATIONS

#34
20220088545
2022-03-24

MEMBRANE WITH IMMOBILIZED ANTICOAGULANT AND PROCESS FOR PRODUCING SAME

#35
20220080364
2022-03-17

Method for biological or biomimetic channel-based membrane fabrications using layer-by-layer structure

#36
20220080360
2022-03-17

OIL/WATER SEPARATION

#37
20220062829
2022-03-03

Monovalent Selective Cation Exchange Membrane

#38
20220041833
2022-02-10

Membranes Suitable for Detecting, Filtering and/or Purifying Biomolecules

#39
20220032282
2022-02-03

Grafted polysulfone membranes

#40
20220023805
2022-01-27

Ultrafiltration/nanofiltration membrane with tunable pore size

#41
20210340343
2021-11-04

Ion exchange membrane through UV initiation polymerization

#42
20210237004
2021-08-05

Composite separation membrane

#43
20210197134
2021-07-01

Filter membrane and device

#44
20210178342
2021-06-17

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

#45
20210171665
2021-06-10

Porous polymeric cellulose prepared via cellulose crosslinking

#46
20210154621
2021-05-27

Filter for removing silica from ultra pure water and method of use

#47
20210146313
2021-05-20

Preparation of metallocene containing cationic polymers for anion exchange applications

#48
20210129110
2021-05-06

POLYCATIONIC MICROFIBERS AND METHODS OF USING THE SAME

#49
20210121828
2021-04-29

A POLYELECTROLYTE-BASED SACRIFICIAL PROTECTIVE LAYER FOR FOULING CONTROL IN DESALINATION AND WATER FILTRATION

#50
20210108067
2021-04-15

CROSSLINKING OF AROMATIC POLYMERS FOR ANION EXCHANGE MEMBRANES

#51
20210031148
2021-02-04

SYSTEMS, DEVICES, AND METHODS FOR BODILY FLUID SEPARATION MATERIALS

#52
20200398230
2020-12-24

Functional fibrous membrane, method for manufacturing the same, filter comprising the same

#53
20200376444
2020-12-03

Modified Filter Membrane and Method

#54
20200368692
2020-11-26

Filtering device, purification device, and method for manufacturing chemical liquid

#55
20200246775
2020-08-06

Supported zeolite films and methods for preparing

#56
20200222858
2020-07-16

Filter membrane and device

#57
20200209123
2020-07-02

Ligand-functionalized substrates with enhanced binding capacity

#58
20200206691
2020-07-02

Coated porous polymeric membranes

#59
20200171442
2020-06-04

HYDROPHILIC FILTER MEMBRANE WITH PENDANT HYDROPHILIC GROUPS, AND RELATED METHODS OF PREPARATION AND USE

#60
20200171436
2020-06-04

ULTRAPURE-WATER PRODUCTION SYSTEM

#61
20200164320
2020-05-28

Polyelectrolyte multilayer (PEM) membranes and their use

#62
20200147557
2020-05-14

Diffusion transfer functionalized membrane

#63
20200139306
2020-05-07

Systems And Methods For Liquid Purification

#64
20200139305
2020-05-07

Filter For Separating Hydrophilic And Hydrophobic Fluids And Method For The Production Thereof

#65
20200078736
2020-03-12

Nanostructured polyelectrolytes for ion-selective membranes

#66
20200070106
2020-03-05

DIALYSIS MEMBRANE AND METHOD FOR ITS PRODUCTION

#67
20200055004
2020-02-20

EXTRACORPOREAL BLOOD CIRCUIT

#68
20200055003
2020-02-20

Borate-containing membranes for gas separation

#69
20200023318
2020-01-23

Systems, devices, and methods for bodily fluid separation materials

#70
20190329188
2019-10-31

MEMBRANE FOR THE ADSORPTION OF BACTERIA

#71
20190285523
2019-09-19

Ligand-functionalized substrates with enhanced binding capacity

#72
20190249150
2019-08-15

Adsorptive membranes for trapping viruses

#73
20190224631
2019-07-25

Acrylonitrile-based membrane with low thrombogenicity

#74
20190219924
2019-07-18

Chemical liquid, chemical liquid storage body, manufacturing method of chemical liquid, and manufacturing method of chemical liquid storage body

#75
20190201852
2019-07-04

Method for the production of positively charged membranes

#76
20190193022
2019-06-27

Gas Separation Membrane

#77
20190175816
2019-06-13

Blood processing filter

#78
20190168170
2019-06-06

ANION EXCHANGE MEMBRANE WITH HYDROPHILIC MOIETIES

#79
20190151796
2019-05-23

Carbon dioxide environmental control system

#80
20190143300
2019-05-16

Filled microporous membranes

#81
20190134570
2019-05-09

Nanofiber-based bipolar membranes, fabricating methods and applications of same

#82
20190099723
2019-04-04

Preparation of metallocene containing cationic polymers for anion exchange applications

#83
20190093907
2019-03-28

Blended membranes for water vapor transport and methods for preparing same

#84
20190067722
2019-02-28

Liquid composition, process for its production, and process for producing membrane-electrode assembly for polymer electrolyte fuel cells

#85
20190062458
2019-02-28

Porous polymeric cellulose prepared via cellulose crosslinking

#86
20190060841
2019-02-28

High selectivity facilitated transport membrane comprising polyethersulfone/polyethylene oxide-polysilsesquioxane blend membrane for olefin/paraffin separations

#87
20190039030
2019-02-07

Charged isoporous materials for electrostatic separations

#88
20180326364
2018-11-15

Homogeneous anion-exchange composite membrane having excellent chemical resistance and method for producing the same

#89
20180326359
2018-11-15

Layered Membrane and Methods of Preparation Thereof

#90
20180318775
2018-11-08

Aqueous phase separation method

#91
20180290109
2018-10-11

Grafted ultra high molecular weight polyethylene microporous membranes

#92
20180272274
2018-09-27

Separation membrane for olefin separation and olefin separation method using the same

#93
20180257042
2018-09-13

Filtration medium sequence for biomaterial purification

#94
20180251592
2018-09-06

Block polymer and polymer electrolyte membrane including same

#95
20180233733
2018-08-16

Methods and apparatus for controlling electrodeposition using surface charge properties

#96
20180217035
2018-08-02

Ligand-functionalized substrates with enhanced binding capacity

#97
20180208728
2018-07-26

Nanoporous lyotropic liquid crystal polymer membranes with reversibly tuned pore size and selectivity, and methods using same

#98
20180200680
2018-07-19

Composite Membrane and Method of Fabricating the Same

#99
20180193805
2018-07-12

Precision filter to filter process liquid for producing circuit boards

#100
20180185835
2018-07-05

Grafted polysulfone membranes

#101
20180178168
2018-06-28

Anti-fouling coatings with star polymers for filtration membranes

#102
20180133686
2018-05-17

Methods for treating filled microporous membranes

#103
20180133664
2018-05-17

Methods for treating filled microporous membranes

#104
20180133658
2018-05-17

ADSORPTIVE MEMBRANE

#105
20180104656
2018-04-19

Systems, devices, and methods for bodily fluid separation materials

#106
20180094247
2018-04-05

Adsorptive membranes for trapping viruses

#107
20180071693
2018-03-15

Filtration membranes, and related nano and/or micro fibers, composites, methods and systems

#108
20180058729
2018-03-01

Anionic electrochemical compressor and refrigeration system employing same

#109
20180036687
2018-02-08

Chlorine resistant polyelectrolyte multilayer membranes for desalination

#110
20170361281
2017-12-21

Filtration membranes with functionalized star polymers

#111
20170341032
2017-11-30

Method of forming an asymmetric membrane

#112
20170341031
2017-11-30

METHOD OF FORMING AN ASYMMETRIC MEMBRANE

#113
20170232405
2017-08-17

Dialysis membrane and method for its production

#114
20170225129
2017-08-10

Separation membrane structure

#115
20170209636
2017-07-27

Filter module

#116
20170189865
2017-07-06

Filtration material

#117
20170184317
2017-06-29

Blended membranes for water vapor transport and methods for preparing same

#118
20170182487
2017-06-29

Polymer and method for preparing the same

#119
20170056828
2017-03-02

Membrane stacks

#120
20170056826
2017-03-02

Membrane stacks

#121
20170037206
2017-02-09

Curable compositions and membranes

#122
20160361690
2016-12-15

Functional polymer membrane and method for producing same

#123
20160346741
2016-12-01

Anion exchange membranes and process for making

#124
20160325239
2016-11-10

COMPOSITE POLYAMIDE MEMBRANE INCLUDING CELLULOSE-BASED QUATERNARY AMMONIUM COATING

#125
20160317974
2016-11-03

Method for preparing a resin-treated microporous membrane

#126
20160264942
2016-09-15

Adsorptive membranes for trapping viruses

#127
20160236154
2016-08-18

Anti-fouling coatings with star polymers for filtration membranes

#128
20160231208
2016-08-11

Ligand functionalized substrates with enhanced binding capacity

#129
20160197370
2016-07-07

Liquid composition, process for its production, and process for producing membrane-electrode assembly for polymer electrolyte fuel cells

#130
20160177043
2016-06-23

Anion exchange membrane for electrodialysis applications and process for the preparation thereof

#131
20160137796
2016-05-19

Ionomeric cross-linkers and membranes formed therefrom

#132
20160136586
2016-05-19

MEMBRANE AND METHOD OF MANUFACTURING THE SAME

#133
20160059190
2016-03-03

LIQUID FILTERING STRUCTURE

#134
20160008769
2016-01-14

Filtration membranes with functionalized star polymers

#135
20150246324
2015-09-03

Charged hollow fiber membrane having hexagonal voids

#136
20150246323
2015-09-03

Charged porous polymeric membrane with high void volume

#137
20150246322
2015-09-03

Porous polymeric membrane with high void volume

#138
20150076054
2015-03-19

Systems, devices, and methods for bodily fluid separation materials

#139
20150075989
2015-03-19

DEVICES AND METHODS USING POROUS MEMBRANES FOR OIL-WATER EMULSION SEPARATION

#140
20150068978
2015-03-12

ENHANCMENT OF MEMBRANE ROBUSTNESS BY TREATMENT WITH IONIC MATERIALS

#141
20150064609
2015-03-05

Ionomers with ionic groups in the side chain

#142
20140339154
2014-11-20

Polymer inclusion membranes for use in processes for treating thiocyanate containing aqueous solutions

#143
20140305863
2014-10-16

Composite membranes

#144
20140262762
2014-09-18

Facilitated olefin transport membrane including aluminium salt

#145
20140200280
2014-07-17

Anion exchange membrane and method for producing same

#146
20140166489
2014-06-19

Nanoengineered field induced charge separation membranes manufacture thereof

#147
20140008285
2014-01-09

PLEATED FILTER

#148
20130313182
2013-11-28

Separation membrane and water treatment device including the same

#149
20130309596
2013-11-21

Liquid composition, process for its production, and process for producing membrane-electrode assembly for polymer electrolyte fuel cells

#150
20130306551
2013-11-21

High performance positively charged composite membranes and their use in nanofiltration processes

#151
20130240355
2013-09-19

FUNCTIONALIZATION OF GRAPHENE HOLES FOR DEIONIZATION

#152
20130146539
2013-06-13

Membrane with localized asymmetries

#153
20130134081
2013-05-30

Hybrid porous structure, method of preparing hybrid porous structure, separation membrane including hybrid porous structure, and water treatment device including membrane

#154
20120312691
2012-12-13

Reliable point of use membrane modification

#155
20120252912
2012-10-04

Process for producing microporous polymeric object, and microporous polymeric object and separation membrane

#156
20120245237
2012-09-27

Ionomers with ionic groups in the side chain

#157
20120186446
2012-07-26

Imidazolium-based room-temperature ionic liquids, polymers, monomers, and membranes incorporating same

#158
20120074068
2012-03-29

Polysaccharide matrix having a grafted polymer, method for producing the same and use thereof

#159
20120035280
2012-02-09

Anion exchange membrane and method for producing same

#160
20120031842
2012-02-09

METHOD FOR MODIFYING COMPOSITE MEMBRANES FOR LIQUID SEPARATIONS

#161
20110240463
2011-10-06

Bipolar membrane and method of manufacturing the same

#162
20110212383
2011-09-01

Liquid composition, process for its production and process for producing membrane-electrode assembly for polymer electrolyte fuel cells

#163
20110163029
2011-07-07

Method for substance separation using a cellulose hydrate membrane in size exclusion chromatography

#164
20110147308
2011-06-23

Charged Porous Polymeric Membranes and Their Preparation

#165
20110147292
2011-06-23

Cellulose hydrate membrane, method for the production thereof, and use thereof

#166
20110132762
2011-06-09

Nanoengineered field induced charge separation membranes and methods of manufacture thereof

#167
20110120947
2011-05-26

Hydrophobic cellulose membrane, method for the production thereof, and use of same in hydrophobic interaction chromatography

#168
20110120941
2011-05-26

Composite membranes with performance enhancing layers

#169
20110094960
2011-04-28

Method of forming a rewettable asymmetric membrane

#170
20110091698
2011-04-21

Method of forming an asymmetric membrane

#171
20100313752
2010-12-16

GAS SEPARATION MEMBRANES AND PROCESSES FOR THE MANUFACTURE THEREOF

#172
20100304273
2010-12-02

Proton conducting membranes for fuel cells having a proton gradient and methods for preparing said membranes

#173
20100096066
2010-04-22

MEMBRANE STRUCTURE AND METHOD OF MAKING

#174
20100063168
2010-03-11

IONOMERS WITH IONOGENIC GROUPS IN THE SIDECHAIN

#175
20100059440
2010-03-11

Cross-linked cellulose membranes

#176
20100047551
2010-02-25

Composite materials comprising supported porous gels containing reactive functional groups

#177
20100044316
2010-02-25

Composite materials comprising supported porous gels

#178
20100036009
2010-02-11

Process for producing microporous polymeric object, and microporous polymeric object and separation membrane

#179
20100022740
2010-01-28

Process for producing glycolic acid

#180
20100018926
2010-01-28

Mixed Matrix Membranes Containing Ion-Exchanged Molecular Sieves

#181
20090184047
2009-07-23

Functionalized nanopore membranes and related methods of use

#182
20090181315
2009-07-16

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

#183
20090123751
2009-05-14

Method for Producing Fine Particles of Salt, Hydroxide or Oxide, and Fine Particles of Salt, Hydroxide or Oxide Produced by Such Method

#184
20090057225
2009-03-05

Filtration Membrane

#185
20090035552
2009-02-05

Composite materials comprising supported porous gels containing reactive functional groups

#186
20090032466
2009-02-05

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

#187
20090032463
2009-02-05

Method for separating a substance from a fluid

#188
20090029438
2009-01-29

Composite material comprising supported porous gel containing functional groups and method of separating substances

#189
20090008332
2009-01-08

NANOFILTRATION WATER-SOFTENING APPARATUS AND METHOD

#190
20090008328
2009-01-08

Separating substances with supported porous gels containing metal-affinity ligands complexed with metal ions

#191
20080314831
2008-12-25

Absorbing biological substances from liquid with supported porous gels containing binding sites

#192
20080312416
2008-12-18

Composite materials comprising supported porous gels containing metal-affinity ligands

#193
20080223785
2008-09-18

Ionic Polymer Membranes

#194
20080182043
2008-07-31

Porous membrane and recording medium comprising same

#195
20080179188
2008-07-31

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

#196
20080171188
2008-07-17

Porous membrane and recording medium, as well as process for preparing same

#197
20080095925
2008-04-24

Method for producing a membrane electrode including forming the membrane in situ

#198
20080014625
2008-01-17

Adsorptive membranes for trapping viruses

#199
20070207493
2007-09-06

Positively charged membrane

#200
20070131609
2007-06-14

Membrane structure and method of making

#201
20070098593
2007-05-03

Hemostatic system and components for extracorporeal circuit

#202
20070023957
2007-02-01

Assembly of free-standing films using a layer-by-layer process

#203
20060249445
2006-11-09

Positively charged membrane

#204
20060204654
2006-09-14

Method of making a composite membrane

#205
20060151374
2006-07-13

Charged membrane

#206
20060019140
2006-01-26

Liquid composition, process for its production and process for producing membrane-electrode assembly for polymer electrolyte fuel cells

#207
20050287515
2005-12-29

Removal of bacterial DNA from therapeutic fluid formulations

#208
20050266289
2005-12-01

Ionic perfluorovinyl compounds and their uses as components of ionic conductors of the polymer type, of selective membranes or of catalysts

#209
20050211621
2005-09-29

Positively charged membrane

#210
20050019302
2005-01-27

Polymer based permeable membrane for removal of ions

#211
19293356
2026-05-05

Polymers for use as anion exchange membranes