ClassID:

30931

B01D2325/28 - CPC Classification

Classification description:

Details relating to properties of membranes Degradation or stability over time

Recent Application in this class:
#1
20250375740
2025-12-11

MEMBRANES HAVING A CROSSLINKED BLOCK COPOLYMER AND PROCESSES FOR MAKING SAME

#2
20250319445
2025-10-16

POLYETHYLENE MICROPOROUS MEMBRANE, METHOD FOR MANUFACTURING THE SAME, AND SEPARATOR INCLUDING MICROPOROUS MEMBRANE

#3
20250319443
2025-10-16

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

#4
20250025840
2025-01-23

High-Efficiency Degassing Polyolefin Hollow Fiber Membrane and Preparation Therefor and Use Thereof

#5
20250001368
2025-01-02

COVALENT ORGANIC FRAMEWORK MEMBRANES, METHODS AND USES THEREOF

#6
20240408549
2024-12-12

WATER TREATMENT CHEMICAL AND WATER TREATMENT MEMBRANE

#7
20240382909
2024-11-21

POLYETHYLENE MICROPOROUS MEMBRANE, METHOD FOR MANUFACTURING THE SAME, AND SEPARATOR INCLUDING MICROPOROUS MEMBRANE

#8
20240342645
2024-10-17

MICROPOROUS CROSSLINKED POLYMER MEMBRANE AND PROCESS FOR FABRICATING THE SAME

#9
20240173679
2024-05-30

Gas Separation Membranes

#10
20240139687
2024-05-02

SCALING-RESISTANT AND YELLOWING-RESISTANT REVERSE OSMOSIS COMPOSITE MEMBRANE AND PREPARATION METHOD THEREOF

#11
20240082790
2024-03-14

FILTRATION MEMBRANE FROM A BLEND COMPRISING POLYSULFONE AND POLYOXAZOLINE AND METHOD MAKING THEREOF

#12
20230191338
2023-06-22

RIGID SELF-SUPPORTING MXene SEPARATION MEMBRANE AND PREPARATION METHOD AND USE THEREOF

#13
20230191333
2023-06-22

SPIRAL WOUND MEMBRANE ELEMENT FOR HIGH TEMPERATURE FILTRATION

#14
20230072241
2023-03-09

COMPOSITE BODY AND USE THEREOF IN ORGANOPHILIC NANOFILTRATION

#15
20230064768
2023-03-02

Anti-fouling and semi-permeable membrane

#16
20220355525
2022-11-10

PTFE porous membrane with a high strength and small pore size

#17
20220010659
2022-01-13

Filtration media including porous polymeric material and degradable shape memory material

#18
20210245108
2021-08-12

Microporous membrane and methods to make same

#19
20210079220
2021-03-18

Zwitterion-functionalized multicomponent copolymers and associated polymer blends and membranes

#20
20200406201
2020-12-31

Hydrophobic polyethylene membrane for use in venting, degassing, and membrane distillation processes

#21
20200392017
2020-12-17

SYSTEMS AND METHODS FOR WATER PURIFICATION

#22
20200391161
2020-12-17

FLUID SEPARATION MEMBRANE

#23
20200384420
2020-12-10

Spiral wound membrane element for high temperature filtration

#24
20200255292
2020-08-13

Binder-free and fouling-resistant CNT thin film membrane

#25
20200254397
2020-08-13

Water treatment separation membrane, water treatment module comprising same, and manufacturing method therefor

#26
20200238222
2020-07-30

High flux, chlorine resistant coating for sulfate removal membranes

#27
20200216330
2020-07-09

Conversion of media filter into membrane gravity filter

#28
20200215494
2020-07-09

Chitosan-graphene oxide membranes

#29
20200055002
2020-02-20

Porous textile fabric, filter element, method for the production thereof and use thereof

#30
20190247801
2019-08-15

Porous membrane and process for producing porous membrane

#31
20190176092
2019-06-13

Process for the production of solvent stable polymeric membranes

#32
20190128883
2019-05-02

Biocompatible polymeric membranes

#33
20190099724
2019-04-04

Method, spinneret and system for fabricating multilayer membranes

#34
20190099722
2019-04-04

Method of making carbon molecular sieve membranes

#35
20190076790
2019-03-14

Porous membrane, porous membrane module, method for producing porous membrane, method for producing clarified liquid, and method for producing beer

#36
20190076787
2019-03-14

Microporous membrane and methods to make same

#37
20190039027
2019-02-07

Chitosan-graphene oxide membranes and process of making the same

#38
20190015794
2019-01-17

Power distribution system with self-learning low power standby reduction

#39
20190015789
2019-01-17

Antifouling and antimicrobial coatings for thin film composite membranes

#40
20190015776
2019-01-17

Gas filtration structure and method for filtering gas

#41
20190009217
2019-01-10

Conductive thin-films for direct membrane surface electroheating

#42
20180369756
2018-12-27

High flux, chlorine resistant coating for sulfate removal membranes

#43
20180318765
2018-11-08

Method for manufacturing water treatment separator, water treatment separator manufactured using same, and water treatment module comprising water treatment separator

#44
20180258285
2018-09-13

Zwitterion-functionalized multicomponent copolymers and associated polymer blends and membranes

#45
20180251592
2018-09-06

Block polymer and polymer electrolyte membrane including same

#46
20180237301
2018-08-23

Carbon nanotube laminates

#47
20180043315
2018-02-15

Two-layer nanofiltration membranes

#48
20180037473
2018-02-08

Conversion of media filter into membrane gravity filter

#49
20180008938
2018-01-11

1234yf- and 1234ze BASED POLYMERIC MEMBRANE MATERIALS, MEMBRANE PREPARATIONS AND USES THEREOF

#50
20180001271
2018-01-04

Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes with enhanced selectivity

#51
20180001270
2018-01-04

Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes with enhanced selectivity

#52
20180001269
2018-01-04

METALLOPOLYIMIDE PRECURSOR FIBERS FOR AGING-RESISTANT CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES WITH ENHANCED SELECTIVITY

#53
20170312702
2017-11-02

Porous calcium-silicates and method of synthesis

#54
20170304779
2017-10-26

Method for producing molded filter body

#55
20170151534
2017-06-01

SUBSTRATE FOR LIQUID FILTER AND METHOD FOR PRODUCING THE SAME

#56
20170144110
2017-05-25

COMPOSITE SEMI-PERMEABLE MEMBRANE USEFUL FOR WATER DESALINATION

#57
20170100697
2017-04-13

Catalytic layer and use thereof in oxygen-permeable membranes

#58
20170056839
2017-03-02

Membranes for gas separation

#59
20170050153
2017-02-23

Polyaniline-based chlorine resistant hydrophilic filtration membranes

#60
20170001151
2017-01-05

Antifouling and antimicrobial coatings for thin film composite membranes

#61
20160375407
2016-12-29

Membrane fouling reduction using chemical micropumps

#62
20160367935
2016-12-22

DEFECT-FREE CARBON MOLECULAR SIEVE MEMBRANES WITH ENHANCED SELECTIVITY AND AGING RESISTANCE AND THE METHOD OF MAKING THE SAME

#63
20160296891
2016-10-13

ORGANIC/INORGANIC HYBRID MEMBRANE FOR FOULING RESISTANCE, METHOD OF PREPARING MEMBRANE FOR FOULING RESISTANCE, AND WATER TREATMENT DEVICE INCLUDING SAID MEMBRANE

#64
20160263529
2016-09-15

Improving the chemical stability of filtration membranes

#65
20160250602
2016-09-01

Manufacture of a filtration membrane

#66
20160243505
2016-08-25

Seaweed polysaccharide based superhydrophilic foam membrane for energy-efficient oil-water separation

#67
20160199791
2016-07-14

Highly crosslinked hybrid polyimide-silsesquioxane membranes

#68
20160166993
2016-06-16

Polyamide-based water-treatment separation membrane having excellent durability, and manufacturing method therefor

#69
20160038885
2016-02-11

High performance membranes for water reclamation using polymeric and nanomaterials

#70
20160002411
2016-01-07

IMPROVING THE CHEMICAL STABILITY OF MEMBRANES

#71
20160001238
2016-01-07

Polymer functional film and method for producing same

#72
20150375178
2015-12-31

Polyamide water-treatment separation membrane having superior oxidation resistance and chlorine resistance properties, and method of manufacturing the same

#73
20150367288
2015-12-24

Composite polyamide membrane including dissolvable polymer coating

#74
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

#75
20150336056
2015-11-26

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

#76
20150328591
2015-11-19

Porous polymer flat-sheet membrane

#77
20150328590
2015-11-19

Hydrogen separation membrane, and method for manufacturing same

#78
20150290595
2015-10-15

Modified thin film composite reverse osmosis membrane and a process for preparation thereof

#79
20150258505
2015-09-17

Gas separation membrane, gas separation module, gas separation apparatus, and gas separation method

#80
20150196871
2015-07-16

Palladium alloy membrane unit, storage structure thereof, and method of purifying hydrogen by using the same

#81
20150027305
2015-01-29

Gas separation systems and methods using membranes

#82
20140339167
2014-11-20

1234YF- and 1234ZE-based polymeric membrane materials, membrane preparations and uses thereof

#83
20140183128
2014-07-03

Polyamide water-treatment separation membrane with improved antifouling properties and manufacturing method thereof

#84
20140144322
2014-05-29

Hydrogen-separation-membrane protection layer and a coating method therefor

#85
20140050856
2014-02-20

Membrane for separating methane or carbon dioxide, and production thereof

#86
20130139685
2013-06-06

Radiation-resistant microporous membrane having a hydrophobicity gradient

#87
20120305472
2012-12-06

Porous hollow fiber membrane for treatment of protein-containing liquid

#88
20120255898
2012-10-11

Semipermeable polymers and method for producing same

#89
20120128868
2012-05-24

Composite ionomeric membrane

#90
20120108418
2012-05-03

Mesoporous silica membrane on polymeric hollow fibers

#91
20120101173
2012-04-26

Method for the production of a high-molecular polyazol

#92
20120094211
2012-04-19

Polyazole-containing composition

#93
20120018370
2012-01-26

Silica membrane and method for manufacturing the same

#94
20120012520
2012-01-19

FORWARD OSMOSIS MEMBRANES AND METHOD FOR FABRICATING THE SAME

#95
20110253616
2011-10-20

Membrane stacks

#96
20110240550
2011-10-06

Block copolymer membranes and associated methods for making the same

#97
20110172317
2011-07-14

Sulfonated polyarylene compounds, membrane material made therefrom, method for the production thereof and use

#98
20110168630
2011-07-14

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

#99
20110155660
2011-06-30

MODIFIED MEMBRANE

#100
20110120942
2011-05-26

Modified polyamide membrane

#101
20110024355
2011-02-03

ANTIMICROBIAL MEMBRANES

#102
20110011786
2011-01-20

Devices for and methods of monitoring a parameter of a fluidic sample by microdialysis

#103
20100282693
2010-11-11

FILTRATION MEMBRANES

#104
20100233812
2010-09-16

Membrane made of a nanostructured material

#105
20100197859
2010-08-05

Blends from branched polyaryl ethers and hydrophilic polymers

#106
20100178489
2010-07-15

Composite semipermeable membrane

#107
20100098872
2010-04-22

MULTILAYERED MEMBRANE AND THE METHOD OF PRODUCING THE MEMBRANE

#108
20100092353
2010-04-15

Hydrogen separation membrane and permselective membrane reactor

#109
20100083837
2010-04-08

Carbon membrane and method of manufacturing the same

#110
20100059433
2010-03-11

POLYMER DEPOSITION AND MODIFICATION OF MEMBRANES FOR FOULING RESISTANCE

#111
20100051538
2010-03-04

Water purification membranes with improved fouling resistance

#112
20100051535
2010-03-04

Crystalline polymer microporous membrane, method for producing the same, and filter for filtration

#113
20100044902
2010-02-25

Composite semipermeable membrane and process for producing the same

#114
20100006495
2010-01-14

Semipermeable polymers and method for producing same

#115
20090283470
2009-11-19

Plasma separation membrane

#116
20090277835
2009-11-12

Method for reducing performance variability of multi-layer filters

#117
20090277824
2009-11-12

Method for reducing performance variability of multi-layer filters

#118
20090272686
2009-11-05

BLOOD PURIFIER

#119
20090266763
2009-10-29

Water treatment apparatus and water treatment method

#120
20090218284
2009-09-03

Method of starting up a filtration plant and a filtration plant designed to be able to start up correspondingly

#121
20090194479
2009-08-06

MODIFIED POLYAMINE MEMBRANE

#122
20090162662
2009-06-25

Low biofouling filtration membranes and their forming method

#123
20090159527
2009-06-25

Modified membrane

#124
20090155657
2009-06-18

Hydrogen Permeable Film, and Fuel Battery Using the Same

#125
20090032466
2009-02-05

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

#126
20080203013
2008-08-28

OXIDATION-RESISTANT COMPOSITE REVERSE OSMOSIS MEMBRANE

#127
20080185332
2008-08-07

Modified polyamide membrane

#128
20080163698
2008-07-10

Method of estimating stable state membrane filtration flux

#129
20080083670
2008-04-10

COMPOSITE SEMIPERMEABLE MEMBRANE AND PROCESS FOR PRODUCING THE SAME

#130
20080061002
2008-03-13

Hydrophilic substance and a production method thereof

#131
20080017578
2008-01-24

Membrane stacks

#132
20080017569
2008-01-24

Porous composite membrane materials and applications thereof

#133
20070219322
2007-09-20

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

#134
20070199891
2007-08-30

Separation membrane with selective permeability and process for producing the same

#135
20070194452
2007-08-23

Hydrogen permeable membrane, fuel cell and hydrogen extracting apparatus equipped with the hydrogen permeable membrane, and method of manufacturing the hydrogen permeable membrane

#136
20070187320
2007-08-16

Polysulfone-base permselective hollow fiber membrane bundle and process for producing the same

#137
20070154701
2007-07-05

Polyurethane films and method of fabricating the same

#138
20070151447
2007-07-05

Gas separation membranes and processes for controlled environmental management

#139
20070125704
2007-06-07

CERAMIC FILTER AND METHOD FOR PURIFYING WATER

#140
20070066691
2007-03-22

Composite ionomeric membrane

#141
20060260466
2006-11-23

Hydrogen permeable member and method for production thereof

#142
20060243661
2006-11-02

System for treating wastewater containing organic compounds

#143
20060213836
2006-09-28

Ultrafiltration membrane, device, bioartificial organ, and methods

#144
20060201884
2006-09-14

High flux, microporous, sieving membranes and separators containing such membranes and processes using such membranes

#145
20060201874
2006-09-14

Composite membrane

#146
20060175256
2006-08-10

Ceramic membrane water filtration

#147
20060033243
2006-02-16

Fabricating structures in micro-fluidic channels based on hydrodynamic focusing

#148
20050109694
2005-05-26

Method and system for treating wastewater containing organic compounds

#149
20050011826
2005-01-20

Asymmetric gel-filled microporous membranes

#150
20050009994
2005-01-13

Polymeric membranes and uses thereof