ClassID:

30016

B01D71/44 - CPC Classification

Classification description:

Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor; Organic material Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups -

Recent Application in this class:
#1
20260103553
2026-04-16

Membranes

#2
20260027527
2026-01-29

POROUS POLY(CYCLIC OLEFIN) MEMBRANES

#3
20260015446
2026-01-15

NOVEL HIGHLY DURABLE CROSS-LINKED POLY(ARYL PIPERIDINIUM) COPOLYMER IONOMER, ANION-EXCHANGE MEMBRANE, AND METHOD FOR MANUFACTURING SAME

#4
20250188233
2025-06-12

MULTIBLOCK COPOLYMER FILMS, METHODS OF MAKING SAME, AND USES THEREOF

#5
20250121335
2025-04-17

POROUS MEMBRANES HAVING AROMATIC FLUORINATED POLYMERS AND FORMATION THEREOF

#6
20250114750
2025-04-10

Bipolar Membranes

#7
20240299887
2024-09-12

THIN-FILM COMPOSITE MEMBRANES HAVING IMPROVED ADHESION BETWEEN LAYERS AND USES THEREOF

#8
20240286086
2024-08-29

COMPOSITE MATERIAL FOR MECHANICAL FILTRATION AND CHEMICAL BINDING OF SUBSTANCES, BACTERIA AND VIRUSES FROM SOLUTIONS

#9
20240181404
2024-06-06

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

#10
20240100485
2024-03-28

ASYMMETRIC MULTIBLOCK COPOLYMER-HOMOPOLYMER FILMS, METHODS OF MAKING SAME, AND USES THEREOF

#11
20240050907
2024-02-15

Membrane for blood purification

#12
20230271146
2023-08-31

Hemodialyzer for blood purification

#13
20230271144
2023-08-31

COMPOSITE MEMBRANE COMPRISING HIGHLY PERMEABLE GUTTER LAYER AND METHOD FOR PREPARING SAME

#14
20230054223
2023-02-23

Hollow-fibre membrane with improved biocompatibility and reduced elution of hydrophilic polymers

#15
20230053706
2023-02-23

Separation membrane and method for producing separation membrane

#16
20230024252
2023-01-26

POROUS SEPARATION MEMBRANE

#17
20220411596
2022-12-29

Multiblock copolymer films, methods of making same, and uses thereof

#18
20220362720
2022-11-17

POROUS POLY (CYCLIC OLEFIN) MEMBRANES

#19
20220331746
2022-10-20

Light-driven filtration antibacterial composite membrane and preparation method and use thereof

#20
20220323912
2022-10-13

LIQUID PURIFICATION MEMBRANE INCLUDING CARBONACEOUS MATERIALS AND METHODS OF FORMING THEM

#21
20220315681
2022-10-06

Gas permeable fluoropolymers and ionomers

#22
20220307732
2022-09-29

Anionic electrochemical compressor and refrigeration system employing same

#23
20220305436
2022-09-29

GUANIDINE-CONTAINING MEMBRANES AND METHODS OF USING THEREOF

#24
20220267497
2022-08-25

Membrane and polymer for the manufacture thereof

#25
20220259539
2022-08-18

BIOINTERFACES FOR GROWING SEAWEED

#26
20220177518
2022-06-09

METHOD FOR PURIFYING PROTEIN

#27
20220163474
2022-05-26

Gas sensor

#28
20220152563
2022-05-19

Hemodialyzer for blood purification

#29
20220152562
2022-05-19

Membrane for blood purification

#30
20220134294
2022-05-05

Crosslinked protein-based separation membrane and application thereof

#31
20220133967
2022-05-05

HEMODIALYZER

#32
20220127413
2022-04-28

IMIDAZOLES AND IMIDAZOLIUM CATIONS WITH EXCEPTIONAL ALKALINE STABILITY

#33
20220120649
2022-04-21

LIGAND-FUNCTIONALIZED SUBSTRATES WITH ENHANCED BINDING CAPACITY

#34
20220088545
2022-03-24

MEMBRANE WITH IMMOBILIZED ANTICOAGULANT AND PROCESS FOR PRODUCING SAME

#35
20220088539
2022-03-24

SEPARATION MEMBRANE MODULE

#36
20220032239
2022-02-03

Membranes for gas separation

#37
20220023804
2022-01-27

Intrinsically microporous ladder-type Tröger's base polymers

#38
20210402074
2021-12-30

Antithrombogenic hollow fiber membranes and filters

#39
20210324118
2021-10-21

Enhanced yield, structural control, and transport properties of polynorbornenes for natural gas upgrading through Mizoroki-Heck cross-couplings

#40
20210299615
2021-09-30

High-Flux Filter Membrane with Three-Dimensional and Self-Aligned Micropores Arrays and Method for Manufacturing Same

#41
20210275976
2021-09-09

High flow liquid filtration device including a porous polyparaxylylene membrane or a porous polyparaxylylene/polytetrafluoroethylene composite membrane

#42
20210268449
2021-09-02

METHOD FOR PRODUCING POROUS HOLLOW FIBER MEMBRANE FOR HUMIDIFICATION

#43
20210260538
2021-08-26

Method for manufacturing porous membrane and porous membrane

#44
20210252458
2021-08-19

Alkali-Stable Nanofiltration Composite Membrane and Method of Manufacture Thereof

#45
20210230359
2021-07-29

Methanesulfonic acid mediated solvent free synthesis of conjugated porous polymer networks

#46
20210197141
2021-07-01

SEPARATION MEMBRANE MODULE

#47
20210197134
2021-07-01

Filter membrane and device

#48
20210187448
2021-06-24

CROSSLINKED PROTEIN-BASED SEPARATION MEMBRANE AND APPLICATION THEREOF

#49
20210187447
2021-06-24

Nanoporous graphene membranes

#50
20210146310
2021-05-20

PVP- AND/OR PVL-CONTAINING COMPOSITE MEMBRANES AND METHODS OF USE

#51
20210086139
2021-03-25

Hydrophilic porous membrane and method for producing hydrophilic porous membrane

#52
20210039054
2021-02-11

Zwitterion-containing membranes

#53
20210031149
2021-02-04

Reverse osmosis membrane with hydrogel coating

#54
20210001280
2021-01-07

MANUFACTURING METHOD AND MANUFACTURING APPARATUS FOR ACIDIC GAS SEPARATION MEMBRANE SHEET

#55
20200360853
2020-11-19

Hydrogen sulfide-carbon dioxide membrane separation systems and processes

#56
20200339770
2020-10-29

Multiblock copolymer films, methods of making same, and uses thereof

#57
20200324250
2020-10-15

Assembly of charge mosaic membranes from ionic polymers

#58
20200316533
2020-10-08

Hemodialyzer for blood purification

#59
20200298186
2020-09-24

METHOD FOR PRODUCING POLYPHENYLSULFONE HOLLOW FIBER MEMBRANE FOR HUMIDIFYING MEMBRANES

#60
20200269197
2020-08-27

Membrane for blood purification

#61
20200246760
2020-08-06

Cell transplant device and method of manufacturing the same

#62
20200222860
2020-07-16

METHOD FOR PREPARING MEMBRANE SELECTIVE LAYERS BY INTERFACIAL FREE RADICAL POLYMERIZATION

#63
20200222858
2020-07-16

Filter membrane and device

#64
20200209123
2020-07-02

Ligand-functionalized substrates with enhanced binding capacity

#65
20200206408
2020-07-02

ANTITHROMBOGENIC HOLLOW FIBER MEMBRANES AND FILTERS

#66
20200188860
2020-06-18

Hollow-fibre membrane with improved biocompatibility and reduced elution of hydrophilic polymers

#67
20200172694
2020-06-04

MICROPOROUS MATERIAL AND SYSTEMS AND METHODS FOR MAKING THE SAME

#68
20200148812
2020-05-14

Methanesulfonic acid mediated solvent free synthesis of conjugated porous polymer networks

#69
20190375887
2019-12-12

Porous compositions and related methods

#70
20190374909
2019-12-12

METHOD FOR PRODUCING A POLYPHENYLSULFONE POROUS HOLLOW FIBER MEMBRANE

#71
20190329184
2019-10-31

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

#72
20190285523
2019-09-19

Ligand-functionalized substrates with enhanced binding capacity

#73
20190247801
2019-08-15

Porous membrane and process for producing porous membrane

#74
20190209744
2019-07-11

Medical material, medical separation membrane, and blood purifier

#75
20190184345
2019-06-20

Gas separation membrane containing heteromorphous shaped silica nanoparticles

#76
20190162638
2019-05-30

Passive sampler and methods of making

#77
20190128883
2019-05-02

Biocompatible polymeric membranes

#78
20190083938
2019-03-21

Method for manufacturing self-healing hydrogel-filled separation membrane for water treatment

#79
20190076790
2019-03-14

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

#80
20190047963
2019-02-14

Imidazoles and imidazolium cations with exceptional alkaline stability

#81
20190036143
2019-01-31

Poly(aryl piperidinium) polymers for use as hydroxide exchange membranes and ionomers

#82
20190001273
2019-01-03

PVP- and/or PVL-containing composite membranes and methods of use

#83
20180361325
2018-12-20

Hollow-fiber membrane and hollow-fiber module for cell culture

#84
20180345230
2018-12-06

High permeance and high selectivity facilitated transport membranes for olefin/paraffin separations

#85
20180243700
2018-08-30

MEMBRANE-FORMING DOPE FOR NON-SOLVENT INDUCED PHASE SEPARATION METHODS, AND A METHOD FOR PRODUCING A POROUS HOLLOW FIBER MEMBRANE USING THE SAME

#86
20180221828
2018-08-09

Acrylonitrile-based membrane with improved performance

#87
20180217035
2018-08-02

Ligand-functionalized substrates with enhanced binding capacity

#88
20180215882
2018-08-02

Swellable and insoluble nanofibers and use thereof in the treatment of essentially aqueous effluents

#89
20180200680
2018-07-19

Composite Membrane and Method of Fabricating the Same

#90
20180194891
2018-07-12

Methanesulfonic acid mediated solvent free synthesis of conjugated porous polymer networks

#91
20180193549
2018-07-12

ANTITHROMBOGENIC HOLLOW FIBER MEMBRANES AND FILTERS

#92
20180185793
2018-07-05

SEPARATION MEMBRANE FOR BLOOD PROCESSING AND BLOOD PROCESSING DEVICE INCLUDING THE MEMBRANE

#93
20180169590
2018-06-21

Hollow fiber membrane, and method for producing hollow fiber membrane

#94
20180162977
2018-06-14

Copolymer and medical device, separation membrane module for medical use, and blood purifier including the same

#95
20180147513
2018-05-31

Polymeric membranes for separation of gases

#96
20180142075
2018-05-24

Microporous polymeric composition

#97
20180142065
2018-05-24

Isatin copolymers having intrinsic microporosity

#98
20180133643
2018-05-17

Methods for the separation of COfrom a gas stream

#99
20180058729
2018-03-01

Anionic electrochemical compressor and refrigeration system employing same

#100
20180043315
2018-02-15

Two-layer nanofiltration membranes

#101
20180021738
2018-01-25

Gas-permeable membrane

#102
20180008939
2018-01-11

Method of preparing thin film composite forward osmosis membranes using polyethylene porous supports

#103
20170326505
2017-11-16

Compositions and methods for improving the anti-fouling properties of polyethersulfone membranes

#104
20170246594
2017-08-31

Curable compositions and membranes

#105
20170225131
2017-08-10

Forward osmosis membrane and forward osmosis treatment system

#106
20170197184
2017-07-13

Hydrophilically modified fluorinated membrane (I)

#107
20170182487
2017-06-29

Polymer and method for preparing the same

#108
20170165616
2017-06-15

Membrane for blood purification

#109
20170165615
2017-06-15

Hemodialyzer for blood purification

#110
20170144111
2017-05-25

Asymmetric articles with a porous substrate and a polymeric coating extending into the substrate and methods of making the same

#111
20170072371
2017-03-16

Hollow fiber membrane module and manufacturing method thereof

#112
20170037206
2017-02-09

Curable compositions and membranes

#113
20170022337
2017-01-26

Multiblock copolymer films, methods of making same, and uses thereof

#114
20170015790
2017-01-19

Nanoporous films derived from polycyclo-olefinic block polymers

#115
20170014777
2017-01-19

Method for the high-throughput preparation of carbon nanotube hollow fiber membranes

#116
20160369026
2016-12-22

Cycloalkylnorbornene monomers, polymers derived therefrom and their use in pervaporation

#117
20160367945
2016-12-22

Green synthesis nanocomposite membranes

#118
20160361463
2016-12-15

Ultrathin parylene-C semipermeable membranes for biomedical applications

#119
20160354771
2016-12-08

Curable composition and cured polymer product

#120
20160325229
2016-11-10

Composite membranes and methods of use

#121
20160303523
2016-10-20

Zwitterion-containing membranes

#122
20160288062
2016-10-06

Hydrophilically modified fluorinated membrane (IV)

#123
20160288061
2016-10-06

Hydrophilically modified fluorinated membrane (I)

#124
20160288060
2016-10-06

Hydrophilically modified fluorinated membrane (V)

#125
20160288059
2016-10-06

Hydrophilically modified fluorinated membrane (II)

#126
20160231208
2016-08-11

Ligand functionalized substrates with enhanced binding capacity

#127
20160228632
2016-08-11

Antithrombogenic hollow fiber membranes and filters

#128
20160222143
2016-08-04

Nanoporous polymeric material, nanoporous polymeric material membrane for selective absorption and manufacturing processes

#129
20160175764
2016-06-23

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

#130
20160077042
2016-03-17

PHOSPHATE SENSOR, ITS USE AND ITS METHOD OF PREPARATION

#131
20150367291
2015-12-24

Virus filter

#132
20150344638
2015-12-03

Self-assembled structure and membrane comprising block copolymer and process for producing the same by spin coating (VIa)

#133
20150343398
2015-12-03

Membrane comprising self-assembled block copolymer and process for producing the same by spray coating (IIc)

#134
20150343393
2015-12-03

Composite semipermeable membrane

#135
20150313943
2015-11-05

Method of preparing platelet solution replaced with artificial preservation solution

#136
20150298436
2015-10-22

Gas separation membrane

#137
20150290594
2015-10-15

Curable compositions and membranes

#138
20150283520
2015-10-08

Mixed matrix polymer compositions

#139
20150108061
2015-04-23

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

#140
20150080616
2015-03-19

Polymeric nanofibrous composite membranes for energy efficient ethanol dehydration

#141
20150020685
2015-01-22

Hollow fiber membranes and methods for forming same

#142
20150008179
2015-01-08

Antithrombogenic hollow fiber membranes and filters

#143
20140284267
2014-09-25

Abrasion-proof filtration membrane and method of producing said membrane

#144
20140283685
2014-09-25

Gas separation membrane

#145
20140260986
2014-09-18

Gas separation membrane, method of producing the same, and gas separating membrane module using the same

#146
20140217014
2014-08-07

Composite filtration membranes and methods of preparation thereof

#147
20140217012
2014-08-07

Multiblock copolymer films, methods of making same, and uses thereof

#148
20140186601
2014-07-03

Microparticle, addition agent and filtering membrane

#149
20140166489
2014-06-19

Nanoengineered field induced charge separation membranes manufacture thereof

#150
20140163124
2014-06-12

Porous film manufacturing method and apparatus

#151
20140124131
2014-05-08

Fabrication of nanoporous membrane

#152
20140116248
2014-05-01

Selective gas transport films that contain brominated styrene-butadiene copolymers

#153
20140073709
2014-03-13

Fluorinated copolymer and ion exchange membrane

#154
20140061121
2014-03-06

Separation membrane, method of producing the same and separation membrane module using the separation membrane

#155
20140042090
2014-02-13

Cycloalkylnorbornene monomers, polymers derived therefrom and their use in pervaporation

#156
20140001115
2014-01-02

Hollow fiber membrane and method for manufacturing thereof

#157
20130338297
2013-12-19

Performance enhancing additives for fiber formation and polysulfone fibers

#158
20130323383
2013-12-05

Composite material

#159
20130291729
2013-11-07

Gas separation membrane

#160
20130255490
2013-10-03

Crosslinked silane-modified molecularly self-assembling material

#161
20130143326
2013-06-06

Ultrathin parylene-C semipermeable membranes for biomedical applications

#162
20130065287
2013-03-14

Chemical processing cell with nanostructured membranes

#163
20130062279
2013-03-14

Green synthesis nanocomposite membranes

#164
20130020262
2013-01-24

High-density polydicyclopentadiene

#165
20120305472
2012-12-06

Porous hollow fiber membrane for treatment of protein-containing liquid

#166
20120301813
2012-11-29

Solid polymer electrolyte material, liquid composition, solid polymer fuel cell and fluoropolymer

#167
20120283404
2012-11-08

Polynorbornene pervaporation membrane films, preparation and use thereof

#168
20120252912
2012-10-04

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

#169
20120219878
2012-08-30

Copolymers comprising phosphonate and/or phosphonic acid groups, usable for forming fuel cell membranes

#170
20120214949
2012-08-23

POLYMER, GAS SEPARATION MEMBRANE, AND PROCESS FOR PRODUCTION OF POLYMER

#171
20120205041
2012-08-16

Method of Assembling a Hollow Fiber Bioreactor

#172
20120190091
2012-07-26

LIQUID-PHASE AND VAPOR-PHASE DEHYDRATION OF ORGANIC / WATER SOLUTIONS

#173
20120186446
2012-07-26

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

#174
20120175299
2012-07-12

HOLLOW FIBER MEMBRANES AND RELATED APPARATUSES AND METHODS

#175
20120142865
2012-06-07

Nanostructured polymer membranes for selective alcohol transport

#176
20120137727
2012-06-07

Membrane-augmented distillation with compression and condensation to separate solvents from water

#177
20120111790
2012-05-10

Preparation of high performance ultra filtration hollow fiber membrane

#178
20120080378
2012-04-05

Thin film composite membranes for forward osmosis, and their preparation methods

#179
20120067209
2012-03-22

Gas separation membrane

#180
20120048799
2012-03-01

Composite filtration membranes and methods of preparation thereof

#181
20120043274
2012-02-23

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

#182
20120031840
2012-02-09

Method for reducing amyloid beta concentration in blood

#183
20120031833
2012-02-09

Systems, compositions, and methods for fluid purification

#184
20110305971
2011-12-15

Solid polymer electrolyte material, liquid composition, solid polymer fuel cell and fluoropolymer

#185
20110263020
2011-10-27

Membrane for cell expansion

#186
20110236745
2011-09-29

Microporous membrane, methods for making such film, and the use of such film as battery separator film

#187
20110233138
2011-09-29

Polymer composition and dialysis membrane formed from the polymer composition

#188
20110210067
2011-09-01

Use of porous hollow-fiber membrane for producing clarified biomedical culture medium

#189
20110186518
2011-08-04

Polymer composition with phytochemical and dialysis membrane formed from the polymer composition

#190
20110180944
2011-07-28

Method for making enclosures filled with liquid and closed by a membrane

#191
20110172317
2011-07-14

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

#192
20110168631
2011-07-14

METHODS AND APPARATUSES FOR WATER FILTRATION USING POLYARYLETHER MEMBRANES

#193
20110147308
2011-06-23

Charged Porous Polymeric Membranes and Their Preparation

#194
20110143260
2011-06-16

Norbornene-type polymers having quaternary ammonium functionality

#195
20110132762
2011-06-09

Nanoengineered field induced charge separation membranes and methods of manufacture thereof

#196
20110108478
2011-05-12

Hydrophilic polyethersulfone filtration membrane, process for producing the same, and dope solution

#197
20110089110
2011-04-21

Filled polymeric membranes, use and method of manufacturing

#198
20110031184
2011-02-10

Hollow fiber membrane and method for manufacturing thereof

#199
20110017660
2011-01-27

Hollow-fiber ultrafiltration membrane with excellent fouling resistance

#200
20110017654
2011-01-27

Separation membrane, method of producing the same and separation membrane module using the separation membrane

#201
20110009799
2011-01-13

Antithrombogenic hollow fiber membranes and filters

#202
20100326915
2010-12-30

HOLLOW FIBER CAPILLARY MEMBRANE AND METHOD FOR THE PRODUCTION THEREOF

#203
20100261799
2010-10-14

Stable and compatible polymer blends

#204
20100258504
2010-10-14

FABRICATION OF ASYMMETRIC POLYSULFONE MEMBRANE FOR DRINKING WATER PURIFICATION

#205
20100197859
2010-08-05

Blends from branched polyaryl ethers and hydrophilic polymers

#206
20100190965
2010-07-29

Method for separation of immunoglobulin monomers

#207
20100190950
2010-07-29

CYCLOOLEFIN ADDITION POLYMER AND MAKING METHOD

#208
20100163488
2010-07-01

Hollow fiber capillary membrane and method for the production thereof

#209
20100130761
2010-05-27

Deacidification method

#210
20100036009
2010-02-11

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

#211
20100012577
2010-01-21

Plasma separation membrane

#212
20090308805
2009-12-17

Preparation of high performance ultra filtration hollow fiber membrane

#213
20090301307
2009-12-10

Gas separation membrane

#214
20090272686
2009-11-05

BLOOD PURIFIER

#215
20090269491
2009-10-29

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

#216
20090246546
2009-10-01

Method for producing a plastic membrane device and the thus obtained device

#217
20090217819
2009-09-03

GAS SEPARATION MEMBRANES COMPRISING PERMEABILITY ENHANCING ADDITIVES

#218
20090188863
2009-07-30

Polynorbornene pervaporation membrane films, preparation and use thereof

#219
20090184037
2009-07-23

MEMBRANE STRUCTURE FOR GAS SEPARATION

#220
20090110907
2009-04-30

Membranes Based On Poly (Vinyl Alcohol-Co-Vinylamine)

#221
20090110900
2009-04-30

Polymeric porous hollow fiber membrane

#222
20090057225
2009-03-05

Filtration Membrane

#223
20090004713
2009-01-01

Membrane-augmented distillation with pressure change to separate solvents from water

#224
20080269409
2008-10-30

Composite Membranes of High Homogeneity

#225
20080242833
2008-10-02

Blend of ionic (co)polymer resins and matrix (co)polymers

#226
20080242819
2008-10-02

Blend of ionic (co)polymer resins and matrix (co)polymers

#227
20080242805
2008-10-02

Blend of ionic (co)polymer resins and matrix (co)polymers

#228
20080241630
2008-10-02

Blend of ionic (CO)polymer resins and matrix (CO)polymers

#229
20080223785
2008-09-18

Ionic Polymer Membranes

#230
20080220258
2008-09-11

Helical substituted polyacetylene structure, method for producing the same, device structure, ion transport film and gas separation film

#231
20080216649
2008-09-11

Liquid-phase and vapor-phase dehydration of organic/water solutions

#232
20080214687
2008-09-04

Cross Linking Treatment of Polymer Membranes

#233
20080203012
2008-08-28

MEMBRANE, APPARATUS, AND ASSOCIATED METHOD

#234
20080171191
2008-07-17

Preparation of polydiacetylene coatings

#235
20080142443
2008-06-19

Polyarylether membranes

#236
20080134895
2008-06-12

Gas separator apparatus

#237
20080095925
2008-04-24

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

#238
20080090007
2008-04-17

Method Of Forming A Nanoporous Dielectric Film

#239
20080078290
2008-04-03

Membrane

#240
20080014490
2008-01-17

Solid polymer electrolyte material, liquid composition, solid polymer fuel cell and fluoropolymer

#241
20080011406
2008-01-17

Oxygen enrichment membrane and composition for preparing the membrane

#242
20070292734
2007-12-20

Polymer electrolyte membrane, method for the production thereof, and application thereof in fuel cells

#243
20070272614
2007-11-29

Acid tolerant polymeric membrane and process for the recovery of acid using polymeric membranes

#244
20070272613
2007-11-29

Acid tolerant polymeric membrane and process for the recovery of acid using polymeric membranes

#245
20070272079
2007-11-29

Three-stage membrane gas separation process

#246
20070214957
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