ClassID:

30018

B01D71/48 - CPC Classification

Classification description:

Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor; Organic material Polyesters

Recent Application in this class:
#1
20260145142
2026-05-28

FLUID FILTRATION MEMBRANES

#2
20260102743
2026-04-16

BITUMINOUS WATERPROOFING MEMBRANE COMPRISING A RECYCLED BITUMINOUS BINDER, A REINFORCEMENT AND A REJUVENATOR

#3
20260070021
2026-03-12

ECO-FRIENDLY MEMBRANES FOR SEPARATIONS

#4
20260014528
2026-01-15

Ordered Metal Organic Framework Polymer Membranes

#5
20250387758
2025-12-25

CO2-Photothermal Dual-Responsive Nanoemulsion Separation Membrane and Preparation Method Thereof and Applications Thereof

#6
20250381529
2025-12-18

POLYPHENOL-MODIFIED POLYMERIC MEMBRANE, PREPARATION METHOD THEREFOR AND METALLIZED POLYMERIC MEMBRANE

#7
20250352954
2025-11-20

SORBENT MEMBRANES FOR LITHIUM HARVESTING, AND SYSTEMS AND METHODS FOR FABRICATION AND USE THEREOF

#8
20250319446
2025-10-16

SEPARATION MEMBRANE, PREPARATION METHOD THEREFOR AND USE THEREOF

#9
20250269333
2025-08-28

LINED HOLLOW FIBER MEMBRANE WITH SANDWICH STRUCTURE, AND PREPARATION METHOD AND USE THEREOF

#10
20250163621
2025-05-22

BIODEGRADABLE AND HYDROPHOBIC POLYLACTIC ACID (PLA ) NON-WOVEN MATERIAL AND PROCESS FOR MANUFACTURING THEREOF

#11
20250108337
2025-04-03

PH-RESPONSIVE ADSORPTIVE COMPOSITE POLYMERIC MEMBRANES

#12
20250058285
2025-02-20

PHOTOCATALYTIC SELF-CLEANING POLYPYRROLE/TiO2-PVDF NANOCOMPOSITE BASED FILTRATION MEMBRANE

#13
20240416287
2024-12-19

TRIAMINE-FUNCTIONALIZED MCM-41-BASED FILTRATION MEMBRANE

#14
20240408553
2024-12-12

HOLLOW FIBER MEMBRANE, HOLLOW FIBER MEMBRANE MODULE AND VESICLE-CONTAINING SOLUTION

#15
20240342666
2024-10-17

LAMINATED FILM

#16
20240278171
2024-08-22

GAS SEPARATION MEMBRANE USING FURAN-BASED POLYMERS

#17
20240226815
2024-07-11

MEMBRANE-BASED-SELF-ASSEMBLED, CHARGED MULTI-WALLED CARBON NANOTUBE/GRAPHENE OXIDE NANOHYBRIDS

#18
20240181376
2024-06-06

MANUFACTURING METHOD OF MELTBLOWN FIBER MEMBRANE

#19
20240131476
2024-04-25

MEMBRANE-BASED-SELF-ASSEMBLED, CHARGED MULTI-WALLED CARBON NANOTUBE/GRAPHENE OXIDE NANOHYBRIDS

#20
20240091688
2024-03-21

AIR FILTER MEDIUM, PLEATED FILTER MEDIUM, AIR FILTER UNIT, MASK FILTER MEDIUM, AND METHOD FOR REGENERATING AIR FILTER MEDIUM

#21
20230391968
2023-12-07

Chemically modified anion exchange membrane

#22
20230347298
2023-11-02

Reverse osmosis membrane and method for manufacturing same

#23
20230311070
2023-10-05

SURFACE-TREATED POROUS MATERIALS HAVING FILTRATION PROPERTIES AND METHODS OF PREPARING THEM

#24
20230271141
2023-08-31

ULTRAFAST WATER FLUX THROUGH HOT-PRESSED SOLUTION BLOWN SPUN NANOFIBER-BASED THIN FILM COMPOSITE MEMBRANES FOR FORWARD OSMOSIS

#25
20230271131
2023-08-31

GAS SEPARATION MEMBRANE USING FURAN-BASED POLYMERS

#26
20230183473
2023-06-15

BIODEGRADABLE AIR FILTERING FILM AND METHOD FOR MANUFACTURING SAME

#27
20230105592
2023-04-06

ORGANIC SOLVENT-SOLUBLE COPOLYMER POLYESTER, COMPOSITION FOR FORMING ULTRAFILTRATION MEMBRANE COMPRISING SAME, AND HIGH WATER PERMEABILITY REVERSE OSMOSIS MEMBRANE PREPARED THEREFROM

#28
20230053706
2023-02-23

Separation membrane and method for producing separation membrane

#29
20220379267
2022-12-01

SYSTEMS AND METHODS FOR PURIFYING AQUEOUS SOLUTIONS

#30
20220355241
2022-11-10

Method of gas separation using metal-organic framework membrane

#31
20220331746
2022-10-20

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

#32
20220305437
2022-09-29

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

#33
20220251316
2022-08-11

Chemically modified anion exchange membrane and method of preparing the same

#34
20220228098
2022-07-21

Tangential flow depth filtration systems and methods of filtration using same

#35
20220169802
2022-06-02

Polypropylene backbone, and nanoporous polypropylene membrane

#36
20220168690
2022-06-02

Hollow Fiber Membrane, Module of the Hollow Fiber Membrane, Humidifying Unit, Air Dryer, Dope Solution for the Hollow Fiber Membrane, and Method for Producing the Hollow Fiber Membrane

#37
20220134294
2022-05-05

Crosslinked protein-based separation membrane and application thereof

#38
20220106554
2022-04-07

METHOD OF USING TRACK ETCHED MEMBRANES FOR THE FILTRATION OF BIOLOGICAL FLUIDS

#39
20220062817
2022-03-03

GAS SEPARATION MEMBRANE USING FURAN-BASED POLYMERS

#40
20220040645
2022-02-10

SELECTIVELY PERMEABLE GRAPHENE OXIDE MEMBRANE

#41
20220032240
2022-02-03

Separation membrane and methods of preparation thereof

#42
20220002911
2022-01-06

Hollow porous fibers

#43
20210402356
2021-12-30

Enthalpy exchanger element, enthalpy exchanger comprising such elements and method for their production

#44
20210394121
2021-12-23

Ion-exchange membrane having an imprinted non-woven substrate

#45
20210371457
2021-12-02

CHROMATOGRAPHY-FREE ANTIBODY PURIFICATION METHOD

#46
20210322927
2021-10-21

SPIRAL-WOUND FILTER MODULE EXHIBITING ALMOST NO HEAVY METAL LEACHING AND MANUFACTURING METHOD THEREOF

#47
20210214669
2021-07-15

Tangential flow depth filtration systems and methods of filtration using same

#48
20210095386
2021-04-01

Composite electrolyte membrane

#49
20210093995
2021-04-01

Method and apparatus for recycling heptafluoroisobutyronitrile

#50
20200362290
2020-11-19

Tangential flow depth filtration systems and methods of filtration using same

#51
20200360866
2020-11-19

Composite porous membrane and preparation method therefor and use thereof

#52
20200345625
2020-11-05

Nanopore Delivery Device

#53
20200282363
2020-09-10

Crosslinked polyethylene glycol polymer membranes for gas separation

#54
20200197880
2020-06-25

Separation membrane

#55
20200197593
2020-06-25

Membrane device for blood separation and methods of making and using the same

#56
20200179869
2020-06-11

GAS SEPARATION MEMBRANE USING FURAN-BASED POLYMERS

#57
20200170381
2020-06-04

Asymmetrical structure moisturizing mask pack

#58
20200139306
2020-05-07

Systems And Methods For Liquid Purification

#59
20200122093
2020-04-23

Method of preparing ion-exchange membrane using chemical modification and ion-exchange membrane prepared thereby

#60
20200094198
2020-03-26

Composite membranes having intrinsic microporosity

#61
20200080041
2020-03-12

Tangential flow depth filtration systems and methods of filtration using same

#62
20200079067
2020-03-12

Method and agent for fixing particles on a substrate

#63
20200055002
2020-02-20

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

#64
20200047128
2020-02-13

FILTRATION DEVICE

#65
20200047114
2020-02-13

Gas separation membrane containing metal-organic frameworks and methods of making thereof

#66
20200040151
2020-02-06

Method of preparing chemically modified anion exchange membrane

#67
20200038814
2020-02-06

Separating membrane and method for manufacturing separating membrane

#68
20200030748
2020-01-30

COMPOSITE MEMBRANES WITH IMPROVED PERFORMANCE AND/OR DURABILITY AND METHODS OF USE

#69
20200016540
2020-01-16

Ion-exchange membrane having an imprinted non-woven substrate

#70
20190276790
2019-09-12

Tangential flow depth filtration systems and methods of filtration using same

#71
20190270050
2019-09-05

Method and apparatus for wafer enhanced electrodeionization of acid streams

#72
20190201822
2019-07-04

ELECTROSPUN HIGH TEMPERATURE ELASTOMER MATERIALS FOR WATER FILTER MEDIA

#73
20190143278
2019-05-16

MIXED MATRIX MEMBRANES FOR OLEFIN/PARAFFIN SEPARATION AND METHOD OF MAKING THEREOF

#74
20190083938
2019-03-21

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

#75
20190060835
2019-02-28

Dead end membrane gas separation process

#76
20190046931
2019-02-14

Separation membrane

#77
20190039016
2019-02-07

Plasticization-resistant polyurethane membrane and preparation method thereof

#78
20190001281
2019-01-03

Grafted islands-in-the-sea nonwoven for high capacity ion exchange bioseparation

#79
20190001262
2019-01-03

GAS SEPARATION MEMBRANE USING FURAN-BASED POLYMERS

#80
20180326327
2018-11-15

Self cleaning water filter unit

#81
20180296986
2018-10-18

PRESSURE-RESISTANT POROUS MACROMOLECULAR PMMA FILTER MEMBRANE MATERIAL

#82
20180257041
2018-09-13

Metal-organic framework filter and preparation method thereof

#83
20180224362
2018-08-09

Apparatus and methods for liquid separation and capture of biologics

#84
20180193804
2018-07-12

RESIN FILM

#85
20180180307
2018-06-28

Latent and sensible cooling membrane heat pump

#86
20180179668
2018-06-28

Hollow porous fibers

#87
20180179352
2018-06-28

Ultra-thin polymer film and porous ultra-thin polymer film

#88
20180154317
2018-06-07

FILTER MEMBRANE

#89
20180154311
2018-06-07

Composite membranes with improved performance and/or durability and methods of use

#90
20180065093
2018-03-08

Separation membrane

#91
20180015425
2018-01-18

Enthalpy exchanger element, enthalpy exchanger comprising such elements and method for their production

#92
20170354774
2017-12-14

Blood filter and method of manufacturing the same

#93
20170292000
2017-10-12

Polymer film, waterproof sound-permeable membrane, waterproof sound-permeable member, electronic device, electronic device case, waterproof sound transmission structure, waterproof gas-permeable membrane, waterproof gas-permeable member, waterproof ventilation structure, suction sheet, method for holding workpiece by suction on suction unit, method for producing ceramic capacitor, optical film, optical member, and composition

#94
20170291147
2017-10-12

Mixed matrix membranes for olefin/paraffin separation and method of making thereof

#95
20170282129
2017-10-05

COMPOSITE SEMIPERMEABLE MEMBRANE AND METHOD FOR PRODUCING THE SAME, SPIRAL WOUND SEPARATION MEMBRANE ELEMENT

#96
20170266628
2017-09-21

METHOD OF CLEANING A MEMBRANE CONTACTOR

#97
20170246594
2017-08-31

Curable compositions and membranes

#98
20170239626
2017-08-24

Permeation side flow path material for spiral membrane element and method for manufacturing same

#99
20170232404
2017-08-17

Electroosmotic membrane

#100
20170203559
2017-07-20

Method for manufacturing laminate, and laminate

#101
20170197182
2017-07-13

Process for improved water flux through a TFC membrane

#102
20170182464
2017-06-29

Membrane separation device having improved filtration velocity

#103
20170123310
2017-05-04

METHOD OF FORMING AN ELECTRONIC DEVICE ON A FLEXIBLE SUBSTRATE

#104
20170113191
2017-04-27

Water separation composite membrane

#105
20170043300
2017-02-16

NANOPOROUS MEMBRANES AND METHODS FOR MAKING THE SAME

#106
20170036173
2017-02-09

MEMBRANES AND METHOD FOR THE PRODUCTION THEREOF

#107
20160325229
2016-11-10

Composite membranes and methods of use

#108
20160313058
2016-10-27

Process and apparatus for separating NOfrom a COand NO-containing fluid

#109
20160304444
2016-10-20

Method for separating isocyanate monomers

#110
20160304416
2016-10-20

Fermentation hydrocarbon gas products separation via membrane

#111
20160264692
2016-09-15

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

#112
20160228829
2016-08-11

FILTRATION MEMBRANE, FILTRATION UNIT, FILTRATION SYSTEM, AND FILTRATION METHOD

#113
20160214069
2016-07-28

NOVEL NANO-PATTERNED THIN FILM MEMBRANES AND THIN FILM COMPOSITE MEMBRANES, AND METHODS USING SAME

#114
20160207006
2016-07-21

Waterproof gas-permeable membrane, waterproof gas-permeable member and waterproof gas-permeable structure including same, and waterproof sound-permeable membrane

#115
20160200632
2016-07-14

Method of making nanoporous structures

#116
20160193385
2016-07-07

MESOSTRUCTURED POLYMER MEMBRANES AND OTHER ARTICLES

#117
20160184778
2016-06-30

Functionalization of nanofibrous microfiltration membranes for water purification

#118
20160061158
2016-03-03

Filter water management using hydrophilic material

#119
20160030895
2016-02-04

Device for separation and collection of plasma

#120
20160030893
2016-02-04

Nanocomposite Membranes

#121
20150336059
2015-11-26

Method for producing a filter intended to filter nanoparticles, obtained filter and associated method for the collection and quantitative analysis of nanoparticles

#122
20150321146
2015-11-12

Composite membrane utilized in membrane distillation

#123
20150298436
2015-10-22

Gas separation membrane

#124
20150290594
2015-10-15

Curable compositions and membranes

#125
20150276309
2015-10-01

Process and apparatus for separating NOfrom a COand NO—containing fluid

#126
20150209715
2015-07-30

Method for producing a filter for the adsorption of volatile hydrocarbons

#127
20150174517
2015-06-25

Water-proof air-permeable filter and use of the same

#128
20150141711
2015-05-21

Graphene oxide-based composite membranes

#129
20150013295
2015-01-15

Blended nonwoven fabric, filter medium, and filter unit

#130
20140363572
2014-12-11

Composite membrane

#131
20140339152
2014-11-20

COMPOSITE SEMIPERMEABLE MEMBRANE AND METHOD OF MANUFACTURING SAME

#132
20140332459
2014-11-13

BIOCIDE-LOADED ELECTROSPUN NANOFIBERS SUPPORTED BY ADHESIVE-FREE THIN FABRIC FOR PATHOGEN REMOVAL FILTRATION

#133
20140262894
2014-09-18

Radial filtration vent and medical device packaging

#134
20140251897
2014-09-11

Composite membranes having intrinsic microporosity

#135
20140076793
2014-03-20

Pressurized hollow fiber membrane module

#136
20140061121
2014-03-06

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

#137
20140021134
2014-01-23

Filter and method for the desalination of water by means of reverse osmosis of the centrifugal type, involving the generation of dean vortices

#138
20130327704
2013-12-12

Electrochemical separation membrane and the manufacturing method thereof

#139
20130327702
2013-12-12

STRUCTURE OF AN ELECTROCHEMICAL SEPARATION MEMBRANE AND MANUFACTURING METHOD FOR FABRICATING THE SAME

#140
20130291729
2013-11-07

Gas separation membrane

#141
20130269520
2013-10-17

Reactive functional group-modified molecularly self-assembling material

#142
20130255490
2013-10-03

Crosslinked silane-modified molecularly self-assembling material

#143
20130133515
2013-05-30

Separation of Acidic Constituents by Self Assembling Polymer Membranes

#144
20130074691
2013-03-28

Water-proof air-permeable filter and use of the same

#145
20130049246
2013-02-28

Process for production of porous membrane

#146
20130041055
2013-02-14

Nanoporous linear polyethylene membranes and block copolymer precursors for same

#147
20120298574
2012-11-29

Organic/inorganic hybrid compound for fouling resistance, membrane including the same for fouling resistance, and method of preparing membrane for fouling resistance

#148
20120244412
2012-09-27

PERFORATED FILM

#149
20120164447
2012-06-28

Liquid Crystal Polyester Porous Film

#150
20120153544
2012-06-21

Melt processable poly (vinyl alcohol) blends and poly (vinyl alcohol) based membranes

#151
20120116024
2012-05-10

SELF-SUPPORTING THIN POLYMER FILM

#152
20120079943
2012-04-05

Process for producing carbon membranes

#153
20120000852
2012-01-05

Polybenzimidazole based membrane for deacidification

#154
20110266220
2011-11-03

SEPARATIONS WITH HIGHLY SELECTIVE FLUOROPOLYMER MEMBRANES

#155
20110225940
2011-09-22

Microporous membrane and method for forming

#156
20110045235
2011-02-24

METHOD FOR MANUFACTURING POROUS POLYMER MOLDED ARTICLE

#157
20110017654
2011-01-27

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

#158
20110003134
2011-01-06

Water-tight and water vapor-permeable membrane

#159
20100292077
2010-11-18

Nano-structured polymer composites and process for preparing same

#160
20100272941
2010-10-28

DURABLE WATER- AND OIL- RESISTANT, BREATHABLE MICROPOROUS MEMBRANE

#161
20100261799
2010-10-14

Stable and compatible polymer blends

#162
20100147693
2010-06-17

Device and method for manufacturing a particulate filter with regularly spaced micropores

#163
20090314696
2009-12-24

Adaptive membrane structure

#164
20090242477
2009-10-01

Modified substrate and process for production thereof

#165
20090226731
2009-09-10

Method for producing a reflective membrane and the membrane produced therewith

#166
20090220612
2009-09-03

HOLLOW-FIBRE-BASED BIOCOMPATIBLE DRUG DELIVERY DEVICE WITH ONE OR MORE LAYERS

#167
20090088486
2009-04-02

ECONOMICALLY EFFICIENT PROCESS OF SYNTHESIZING POROUS POLYMERIC MATERIALS

#168
20090073400
2009-03-19

Device and method for manufacturing a particulate filter with regularly spaced micropores

#169
20080035575
2008-02-14

Polymer membrane for separating aromatic and aliphatic compounds

#170
20080035573
2008-02-14

Membrane for separating aromatic and aliphatic compounds

#171
20080025875
2008-01-31

Chemical, Particle, and Biosensing with Nanotechnology

#172
20060289352
2006-12-28

Poly(meth)acrylate membranes for separation of hydrocarbon mixtures

#173
20050230353
2005-10-20

Method and array for processing carrier materials by means of heavy ion radiation and subsequent etching

#174
20050118479
2005-06-02

Electrolyte film and solid polymer fuel cell using the same

#175
20050032982
2005-02-10

Modified membranes

#176
20050029186
2005-02-10

Modified membranes

#177
20050029185
2005-02-10

Modified membranes

#178
19183913
2025-10-14

Preparation method for reverse osmosis membrane resistant to high-temperature water environment

#179
15913706
2018-11-13

Thin film nanocomposite nanofiltration membrane

#180
14519743
2017-03-21

Surface functionalization of metal organic frameworks for mixed matrix membranes

#181
13206038
2015-08-04

Non-reactive process for fixing nanotubes in a membrane in through-passage orientation