ClassID:

30024

B01D71/60 - CPC Classification

Classification description:

Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor; Organic material; Other polymers having nitrogen in the main chain, with or without oxygen or carbon only Polyamines

Recent Application in this class:
#1
20260131291
2026-05-14

COMPOSITION FOR FORMING ANION EXCHANGE POLYMER, ANION EXCHANGE MEMBRANE AND METHOD OF MANUFACTURING ANION EXCHANGE MEMBRANE

#2
20260115663
2026-04-30

Raw Material Solution Concentration System

#3
20260077299
2026-03-19

GAS SEPARATION MEMBRANES, METHODS OF PREPARING MEMBRANES, AND METHODS OF SEPARATING GASES

#4
20260014526
2026-01-15

WATER TREATMENT METHOD

#5
20260008016
2026-01-08

METHOD FOR MAKING POLYSULFONE-BASED MEMBRANE

#6
20250352956
2025-11-20

Highly Tuneable Graphene Oxide Membranes for Point-of-use to Portable Water Filtration

#7
20250345753
2025-11-13

SOLAR SEAWATER DESALINATION MEMBRANE, PREPARATION METHOD AND SEAWATER DESALINATION TREATMENT METHOD THEREOF

#8
20250319446
2025-10-16

SEPARATION MEMBRANE, PREPARATION METHOD THEREFOR AND USE THEREOF

#9
20250319443
2025-10-16

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

#10
20250312749
2025-10-09

POLYAMIDINE-CONTAINING MEMBRANES FOR CO2 SEPARATIONS FROM GASEOUS STREAMS

#11
20250186946
2025-06-12

ASYMMETRIC SOLVENT-RESISTANT NANOFILTRATION (SRNF) MEMBRANES

#12
20250041806
2025-02-06

APPARATUS AND PROCESS FOR MONOVALENT ION EXTRACTION

#13
20250025843
2025-01-23

FLEXIBLE IONIC BUILDING BLOCKS WITH HIGH IONIC CONDUCTIVITY AND ALKALINE STABILITY FOR USE IN STRUCTURED ORGANIC FILM (SOF) CONTAINING ANION EXCHANGE MEMBRANES (AEMs)

#14
20250018344
2025-01-16

HYDROPHILIC MODIFIED POLYMER MEMBRANE AND FABRICATION METHOD THEREFOR

#15
20250001368
2025-01-02

COVALENT ORGANIC FRAMEWORK MEMBRANES, METHODS AND USES THEREOF

#16
20240399319
2024-12-05

ANION EXCHANGE MEMBRANE AND METHOD FOR PRODUCING THE SAME

#17
20240376266
2024-11-14

POLY(SPIROBISINDANE-ARYL PIPERIDINIUM) COPOLYMER IONOMER, ANION EXCHANGE MEMBRANE, AND METHOD FOR PREPARING SAME

#18
20240367108
2024-11-07

Forward Osmosis Membrane Module and Manufacturing Method Therefor

#19
20240342658
2024-10-17

Energy Recovery Ventilator

#20
20240335795
2024-10-10

Method For Preparing Porous Aromatic Framework Membranes Based on Inorganic Salt Template Method

#21
20240325988
2024-10-03

POLYSULFONE-BASED MEMBRANE FOR FRACTIONATION OF ERICHROME BLACK T (EBT)/DIVALENT SALTS, AND A METHOD OF MAKING THE SAME

#22
20240252991
2024-08-01

CROWN ETHER MODIFIED CATION EXCHANGE MEMBRANES FOR SELECTIVE RECOVERY OF IONIC SPECIES AND METHODS OF MAKING AND USING THE SAME

#23
20240131477
2024-04-25

OXIDATION RESISTANT POLYMERS FOR USE AS ANION EXCHANGE MEMBRANES AND IONOMERS

#24
20240082791
2024-03-14

Dendrimeric carbon dot-polyamide membranes

#25
20240010804
2024-01-11

Compositions and Polymer Films

#26
20230271145
2023-08-31

ROBUST NANOFILMS PREPARED FROM SUSTAINABLE MATERIALS

#27
20230202854
2023-06-29

Method for recovering rare metal salt

#28
20230182086
2023-06-15

HIGH-PERFORMANCE COMPOSITE MEMBRANES FOR GAS SEPARATION

#29
20230149916
2023-05-18

MEMBRANE FOR REMOVING ANIONIC MATERIALS

#30
20230149894
2023-05-18

SORBENT MATERIAL FOR REMOVING CONTAMINANTS FROM WATER

#31
20230115295
2023-04-13

Swift CO2 Capture and Disposal System

#32
20230016870
2023-01-19

Gas separation membranes

#33
20220378996
2022-12-01

METHOD FOR MANUFACTURING OXYGENATOR

#34
20220355271
2022-11-10

Pcstructures including supported polyamines and methods of making the supported polyamines

#35
20220331744
2022-10-20

Method for preparing nanofiltration membrane and nanofiltration membrane prepared therefrom

#36
20220323911
2022-10-13

Dendrimer particles and related mixed matrix filtration membranes, compositions, methods, and systems

#37
20220305437
2022-09-29

CO2 UTILIZATION FOR CO PRODUCTION VIA FUEL CELL ENABLED BY CO2-SELECTIVE MEMBRANE

#38
20220305436
2022-09-29

GUANIDINE-CONTAINING MEMBRANES AND METHODS OF USING THEREOF

#39
20220274052
2022-09-01

ACIDIC GAS SEPARATION MEMBRANE, ACIDIC GAS SEPARATION DEVICE, METHOD FOR PRODUCING ACIDIC GAS SEPARATION MEMBRANE, AND ACIDIC GAS SEPARATION METHOD

#40
20220234007
2022-07-28

FUNCTIONAL COMPOSITE MEMBRANES FOR CHROMATOGRAPHY AND CATALYSIS

#41
20220194869
2022-06-23

CERAMIC GO/PEI NANOMEMBRANE BY LAYER-BY-LAYER ASSEMBLY BASED ON COVALENT BOND USING EDC CHEMISTRY AND METHOD FOR MANUFACTURING THE SAME

#42
20220193617
2022-06-23

METHOD FOR MANUFACTURING A MEMBRANE WITH HIGH PERCOLATION POWER

#43
20220187015
2022-06-16

Raw Material Solution Concentration System

#44
20220184562
2022-06-16

Nanostructured membrane filter system for rapid purification of water

#45
20220080364
2022-03-17

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

#46
20220062828
2022-03-03

Monovalent Selective Cation Exchange Membrane

#47
20220032239
2022-02-03

Membranes for gas separation

#48
20220002497
2022-01-06

BLOCK POLYMER COMPOSITE MEMBRANES

#49
20210394127
2021-12-23

Gas permeable membranes and methods of using thereof

#50
20210370240
2021-12-02

Thin-film composite membrane and methods of making and using the same

#51
20210354091
2021-11-18

Production of thin film composite hollow fiber membranes

#52
20210340343
2021-11-04

Ion exchange membrane through UV initiation polymerization

#53
20210283550
2021-09-16

Gas separation membrane module

#54
20210236990
2021-08-05

METHOD FOR ENRICHING AQUEOUS ETHANOLIC SOLUTION IN ETHANOL

#55
20210178342
2021-06-17

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

#56
20210121831
2021-04-29

Composite membrane containing a polydopamine-poly acyl halide matrix incorporating carbide-derived carbon and methods thereof

#57
20210046429
2021-02-18

METHODS OF MEMBRANE MODIFICATION

#58
20210008522
2021-01-14

Modified polyamines grafted to a particulate, solid support as sorbent materials for removal of target substances from fluids

#59
20210008491
2021-01-14

Method and apparatus for removing CO2

#60
20210001284
2021-01-07

Polyacid-functionalized porous membranes, related methods, and related polyacid polymers

#61
20200406199
2020-12-31

Nanofiltration membrane with high flux for selectively removing hydrophobic endocrine disrupting chemicals and preparation method thereof

#62
20200398229
2020-12-24

Membranes for gas separation

#63
20200330931
2020-10-22

FUNCTIONALIZED SILICON NANOMEMBRANES AND USES THEREOF

#64
20200239685
2020-07-30

Vesicle incorporating transmembrane protein

#65
20200238220
2020-07-30

Polyimide composition

#66
20200188862
2020-06-18

Mixed matrix membranes with embedded polymeric particles and networks and related compositions, methods, and systems

#67
20200164318
2020-05-28

Graphene-based membrane and method of producing the same

#68
20200078744
2020-03-12

METHOD OF PRODUCING A HOLLOW FIBER MEMBRANE

#69
20200078736
2020-03-12

Nanostructured polyelectrolytes for ion-selective membranes

#70
20200070106
2020-03-05

DIALYSIS MEMBRANE AND METHOD FOR ITS PRODUCTION

#71
20200055004
2020-02-20

EXTRACORPOREAL BLOOD CIRCUIT

#72
20200001251
2020-01-02

Ion selective membrane with ionophores

#73
20190358593
2019-11-28

Removing metal ions from aqueous systems with an active layer membrane

#74
20190351374
2019-11-21

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

#75
20190329186
2019-10-31

Composite membranes for separation of gases

#76
20190321780
2019-10-24

Multi-stage membrane for N2 rejection

#77
20190314769
2019-10-17

BILAYER 2D MATERIAL LAMINATES FOR HIGHLY SELECTIVE AND ULTRA-HIGH THROUGHPUT FILTRATION

#78
20190292074
2019-09-26

Methods for preparing porous nanocomposite polymer hydrogel beads for water treatment

#79
20190291077
2019-09-26

Pcstructures including supported polyamines and methods of making the supported polyamines

#80
20190283388
2019-09-19

Layer-by-layer assembly of graphene oxide membranes via electrostatic interaction and eludication of water and solute transport mechanisms

#81
20190282967
2019-09-19

Semipermeable membrane and preparation method thereof

#82
20190255488
2019-08-22

Nanofiltration membranes and methods of use

#83
20190217254
2019-07-18

Polyaniline membranes, uses, and methods thereto

#84
20190217249
2019-07-18

Membranes with alternative selective layers

#85
20190211151
2019-07-11

Polymers having intrinsic microporosity including sub-units with troger's base and spirobisindane moieties

#86
20190201852
2019-07-04

Method for the production of positively charged membranes

#87
20190134570
2019-05-09

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

#88
20190046934
2019-02-14

Filtration membranes and related compositions, methods and systems

#89
20180326362
2018-11-15

Highly selective alicyclic polyamide nanofiltration membrane and making method thereof

#90
20180304193
2018-10-25

Mixed matrix membrane, a method of making thereof, and a method for gas separation

#91
20180272274
2018-09-27

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

#92
20180200680
2018-07-19

Composite Membrane and Method of Fabricating the Same

#93
20180186142
2018-07-05

Layer-by-layer assembly of graphene oxide membranes via electrostatic interaction and eludication of water and solute transport mechanisms

#94
20180169594
2018-06-21

Gas separation memebrane

#95
20180117538
2018-05-03

Polyacid-functionalized porous membranes, related methods, and related polyacid polymers

#96
20180085783
2018-03-29

Methods and systems for coating hollow fiber membrane contactors

#97
20180036687
2018-02-08

Chlorine resistant polyelectrolyte multilayer membranes for desalination

#98
20170291146
2017-10-12

Polyimide composition and preparation method of separation membrane

#99
20170232405
2017-08-17

Dialysis membrane and method for its production

#100
20170209838
2017-07-27

Composite membranes for separation of gases

#101
20170065937
2017-03-09

Solvent resistant thin film composite membrane and its preparation

#102
20170056840
2017-03-02

Additives for salt rejection enhancement of a membrane

#103
20170056837
2017-03-02

Additives for boron rejection enhancement of a membrane

#104
20170050153
2017-02-23

Polyaniline-based chlorine resistant hydrophilic filtration membranes

#105
20170014779
2017-01-19

Chemical additives for water flux enhancement

#106
20170014776
2017-01-19

ANTI-FOULING MEMBRANES

#107
20170009047
2017-01-12

Organic-inorganic composite, structural body, and method for producing organic-inorganic composite

#108
20160375409
2016-12-29

Self-wetting porous membranes (I)

#109
20160355416
2016-12-08

Combination of chemical additives for enhancement of water flux of a membrane

#110
20160355415
2016-12-08

Chemical additives for enhancement of water flux of a membrane

#111
20160303522
2016-10-20

Nanofiltration membrane and method of manufacturing a nanofiltration membrane

#112
20160303517
2016-10-20

DENDRIMER PARTICLES AND RELATED MIXED MATRIX FILTRATION MEMBRANES, COMPOSITIONS, METHODS, AND SYSTEMS

#113
20160288057
2016-10-06

Nanofiltration membranes and methods of use

#114
20160279577
2016-09-29

METHOD FOR THE PRODUCTION OF SOLVENT-STABLE POLYMER MEMBRANES, POLYMER MEMBRANE AND ALSO SOLUTION FOR THE PRODUCTION OF A POLYMER MEMBRANE

#115
20160264692
2016-09-15

Polymers and membranes for separation of polar organic compounds from aqueous mixtures and methods of using

#116
20160243504
2016-08-25

Filtration membranes and related compositions, methods and systems

#117
20160207010
2016-07-21

Base stable semipermeable membrane and methods thereof

#118
20160184778
2016-06-30

Functionalization of nanofibrous microfiltration membranes for water purification

#119
20160136586
2016-05-19

MEMBRANE AND METHOD OF MANUFACTURING THE SAME

#120
20160082399
2016-03-24

Polyaniline membranes formed by phase inversion for forward osmosis applications

#121
20160061158
2016-03-03

Filter water management using hydrophilic material

#122
20160051944
2016-02-25

Solvent and acid stable membranes, methods of manufacture thereof and methods of use thereof inter alia for separating metal ions from liquid process streams

#123
20160051940
2016-02-25

SEPARATION MEMBRANE FOR SEAWATER DESALINATION AND METHOD FOR PRODUCING SAME

#124
20160030897
2016-02-04

Hybrid nanoparticle TFC membranes

#125
20160008770
2016-01-14

Method for producing hollow fiber carbon membrane

#126
20150367293
2015-12-24

Stepwise interfacial polymerization technique with different reagent solution designs to prepare hollow fiber nanofiltration membrane composites

#127
20150353381
2015-12-10

Porous nanocomposite polymer hydrogels for water treatment

#128
20150336056
2015-11-26

Complex for acid gas separation, module for acid gas separation, and method for manufacturing module for acid gas separation

#129
20150273404
2015-10-01

Polyaniline membranes, uses, and methods thereto

#130
20150259488
2015-09-17

Functional polymer membrane and method of producing the same

#131
20150258506
2015-09-17

Layer-by-layer assembly of graphene oxide membranes via electrostatic interaction and eludication of water and solute transport mechanisms

#132
20150165390
2015-06-18

Carbon-dioxide-separating membrane

#133
20150108061
2015-04-23

Forward osmosis membrane for seawater desalination and method for preparing the same

#134
20150083657
2015-03-26

MEMBRANE AND METHOD FOR MAKING THE SAME

#135
20150068972
2015-03-12

NANOCOMPOSITE MEMBRANES

#136
20150053610
2015-02-26

Mixed matrix membranes with embedded polymeric particles and networks and related compositions, methods, and systems

#137
20140360932
2014-12-11

Polymeric matrices formed from monomers comprising a protected amine group

#138
20140311347
2014-10-23

POLANILINE BASED MEMBRANES FOR SEPARATION OF CARBON DIOXIDE AND METHANE

#139
20140283685
2014-09-25

Gas separation membrane

#140
20140186601
2014-07-03

Microparticle, addition agent and filtering membrane

#141
20140137740
2014-05-22

Carbon dioxide separation member, method for producing same, and carbon dioxide separation module

#142
20140054221
2014-02-27

Membranes with polydopamine coatings

#143
20140042089
2014-02-13

DESALINATION TREATMENT MEMBRANE, DESALINATION TREATMENT METHOD, AND DESALINATION TREATMENT APPARATUS

#144
20130334129
2013-12-19

COMPOSITE MATERIAL FOR PURIFICATION OF A LIQUID BY FILTRATION

#145
20130277300
2013-10-24

Methods of membrane modification

#146
20130230896
2013-09-05

Covalently immobilized enzyme and method to make the same

#147
20130213881
2013-08-22

Filtration membranes and related compositions, methods and systems

#148
20130192459
2013-08-01

Hollow fibre membrane

#149
20130133249
2013-05-30

Partition fluid separation

#150
20130015122
2013-01-17

NANOCOMPOSITE MEMBRANES

#151
20130012633
2013-01-10

HYBRID COMPOSITION AND MEMBRANE BASED ON SILYLATED HYDROPHILIC POLYMER

#152
20120312168
2012-12-13

Gas separation composite membrane

#153
20120273421
2012-11-01

Solvent and acid stable membranes, methods of manufacture thereof and methods of use thereof inter alia for separating metal ions from liquid process streams

#154
20120261344
2012-10-18

Hybrid nanoparticle TFC membranes

#155
20120223010
2012-09-06

Sulfonated poly (aryl ether) membrane including blend with phenyl amine compound

#156
20120210869
2012-08-23

Delamination free membrane

#157
20120152822
2012-06-21

Polymeric matrices formed from monomers comprising a protected amine group

#158
20120107720
2012-05-03

Self-supporting dynamic polymer membrane, and uses

#159
20120097603
2012-04-26

Process for fabricating membrane filters, and membrane filters

#160
20120067209
2012-03-22

Gas separation membrane

#161
20120048805
2012-03-01

METHOD OF MODIFYING THIN FILM COMPOSITE MEMBRANE SUPPORT STRUCTURES FOR ENGINEERED OSMOSIS APPLICATIONS

#162
20120043274
2012-02-23

Forward osmosis membrane for seawater desalination and method for preparing the same

#163
20110269906
2011-11-03

Membranes, methods of making membranes, and methods of separating gases using membranes

#164
20110004018
2011-01-06

Process for producing diamine and polyamide

#165
20100326273
2010-12-30

PLASTICIZATION RESISTANT MEMBRANES

#166
20100307974
2010-12-09

PREPARATION AND USE OF NOVEL POLYANILINES FOR WATER TREATMENT

#167
20100305289
2010-12-02

HYBRID COMPOSITION AND MEMBRANE BASED ON SILYLATED HYDROPHILIC POLYMER

#168
20100261799
2010-10-14

Stable and compatible polymer blends

#169
20100222489
2010-09-02

COPOLYMER COMPOSITION, MEMBRANE ARTICLE, AND METHODS THEREOF

#170
20100132559
2010-06-03

Selectively permeable material, method for producing selectively permeable membrane structure, selectively permeable membrane structure, and air conditioning system

#171
20100130761
2010-05-27

Deacidification method

#172
20100078381
2010-04-01

Covalently immobilized enzyme and method to make the same

#173
20100062156
2010-03-11

Reverse osmosis membranes

#174
20100059441
2010-03-11

Ethanol stable epoxy amine based membrane for aromatics separation

#175
20100059433
2010-03-11

POLYMER DEPOSITION AND MODIFICATION OF MEMBRANES FOR FOULING RESISTANCE

#176
20100051538
2010-03-04

Water purification membranes with improved fouling resistance

#177
20090313895
2009-12-24

PROCESS FOR OBTAINING A HYDROCARBON-ENRICHED FRACTION FROM A GASEOUS FEEDSTOCK COMPRISING A HYDROCARBON FRACTION AND CARBON DIOXIDE

#178
20090272692
2009-11-05

THIN FILM MEMBRANES WITH ADDITIVES FOR FORWARD AND PRESSURE RETARDED OSMOSIS

#179
20090269491
2009-10-29

Carbon-polymer electrochemical systems and methods of fabricating them using layer-by-layer technology

#180
20090184047
2009-07-23

Functionalized nanopore membranes and related methods of use

#181
20090110873
2009-04-30

Polymer hybrid membrane structures

#182
20090057225
2009-03-05

Filtration Membrane

#183
20080168900
2008-07-17

Membranes, Methods of Making Membrane, and Methods of Separating Gases Using Membranes

#184
20080060651
2008-03-13

Process and device for separating carbon dioxide from a breathing gas mixture by means of a fixed site carrier membrane

#185
20070207493
2007-09-06

Positively charged membrane

#186
20070051680
2007-03-08

Hydrophilic cross-linked polymeric membranes and sorbents

#187
20060283323
2006-12-21

Polyoxometalate material for gaseous stream purification at high temperature

#188
20060263659
2006-11-23

Polymer electrolyte membrane and fuel cell using the polymer electrolyte membrane

#189
20060249445
2006-11-09

Positively charged membrane

#190
20060121217
2006-06-08

Composite material comprising layered hydrophilic coatings

#191
20060062982
2006-03-23

Carbon-polymer electrochemical systems and methods of fabricating them using layer-by-layer technology

#192
20060046134
2006-03-02

Polymer electrolyte membrane and fuel cell employing the same

#193
20050211624
2005-09-29

Hydrophilic cross-linked polymeric membranes and sorbents

#194
20050211621
2005-09-29

Positively charged membrane

#195
20050199544
2005-09-15

Process for the preparation of free standing membranes

#196
20050103705
2005-05-19

Process for preparing semipermeable membranes having improved permeability

#197
16989142
2022-12-13

Filtration processes and systems

#198
14519743
2017-03-21

Surface functionalization of metal organic frameworks for mixed matrix membranes