ClassID:

30015

B01D71/42 - CPC Classification

Classification description:

Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor; Organic material; Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters Polymers of nitriles, e.g. polyacrylonitrile

Recent Application in this class:
#1
20250073648
2025-03-06

NANOFILTRATION MEMBRANE PREPARATION METHOD, AND NANOFILTRATION MEMBRANE PREPARED THEREBY

#2
20230407234
2023-12-21

CELL CONCENTRATION METHODS AND DEVICES FOR USE IN AUTOMATED BIOREACTORS

#3
20230338901
2023-10-26

Polyacrylonitrile-based membrane for uranium-extraction-from-seawater-seawater desalination cogeneration and its preparation method thereof

#4
20230068813
2023-03-02

POLYMER ADDITIVE COMPRISING ZWITTERIONIC MOIETIES FOR VINYLIDENE FLUORIDEPOLYMER BASED MEMBRANES

#5
20220331744
2022-10-20

Method for preparing nanofiltration membrane and nanofiltration membrane prepared therefrom

#6
20220241484
2022-08-04

Blood treatment device comprising alkaline phosphatase

#7
20220187015
2022-06-16

Raw Material Solution Concentration System

#8
20220186403
2022-06-16

Charged nanofibers and methods for making

#9
20220105462
2022-04-07

m-PHENYLENEDIAMINE COMPOUND, POLYMER AND METHOD FOR PRODUCING THE SAME, AND GAS SEPARATION MEMBRANE, GAS SEPARATION MODULE, AND GAS SEPARATION APPARATUS USING THE POLYMER

#10
20220062831
2022-03-03

METAL-ORGANIC FRAMEWORK MATERIAL/MEMBRANE COMPOSITE MATERIAL, PREPARATION METHOD AND USE THEREOF

#11
20220008869
2022-01-13

Electrically conductive membrane assembly and related systems and methods

#12
20210394121
2021-12-23

Ion-exchange membrane having an imprinted non-woven substrate

#13
20210394113
2021-12-23

Polymer and method for producing the same, gas separation membrane, gas separation module, and gas separation apparatus using the polymer, and m-phenylenediamine compound

#14
20210363463
2021-11-25

A MEMBRANE-BASED METHOD FOR DECOLORIZING VEGETABLE WAX

#15
20210331122
2021-10-28

TWO-DIMENSIONAL NANOPOROUS COVALENT ORGANIC FRAMEWORK FOR SELECTIVE SEPARATION AND FILTRATION MEMBRANE FORMED THEREFROM

#16
20210291122
2021-09-23

Rare earth treatment of membranes to remove contaminants

#17
20210229045
2021-07-29

Separation of gases via carbonized vinylidene chloride copolymer gas separation membranes and processes therefor

#18
20210187428
2021-06-24

Uniformly structured high-permeability microporous membrane for filtering and method for preparing the same, flat filtering element and gas filtering article

#19
20210154620
2021-05-27

Membranes in the form of hollow fibers for the separation of COfrom natural gas and method of preparation by heat treatment and development of a polymeric membrane precursor

#20
20210129087
2021-05-06

Anti-haze anti-harmful gas air filter membrane as well as preparation method and application thereof

#21
20210121829
2021-04-29

Nanofiltration composite membrane, and preparation method and application thereof

#22
20210069400
2021-03-11

Methods and apparatus for kidney dialysis and extracorporeal detoxification

#23
20210039054
2021-02-11

Zwitterion-containing membranes

#24
20200324250
2020-10-15

Assembly of charge mosaic membranes from ionic polymers

#25
20200287188
2020-09-10

Block copolymer separators with nano-channels for lithium-ion batteries

#26
20200282363
2020-09-10

Crosslinked polyethylene glycol polymer membranes for gas separation

#27
20200269193
2020-08-27

Deeply grooved nanoparticle-coated nanofibers

#28
20200261751
2020-08-20

3-DIMENSIONAL NASAL FILTER POD

#29
20200255793
2020-08-13

Cell concentration methods and devices for use in automated bioreactors

#30
20200246530
2020-08-06

Gasless extra-corporeal carbon dioxide removal

#31
20200227754
2020-07-16

Secondary battery having short-circuit preventing film

#32
20200197878
2020-06-25

Hybrid membrane and method for separating oil and water

#33
20200164318
2020-05-28

Graphene-based membrane and method of producing the same

#34
20200147287
2020-05-14

OPTIMIZED HEMODIALYZER FOR BLOOD PURIFICATION

#35
20200114318
2020-04-16

Porous membrane for water treatment use

#36
20200113781
2020-04-16

Sterile solutions product bag

#37
20200086280
2020-03-19

FILTER ELEMENT AND METHOD OF MANUFACTURING THE SAME

#38
20200055004
2020-02-20

EXTRACORPOREAL BLOOD CIRCUIT

#39
20200023320
2020-01-23

SEPARATION COMPOSITE MEMBRANE, SEPARATION MEMBRANE MODULE, SEPARATOR, COMPOSITION FOR FORMING SEPARATION MEMBRANE, AND METHOD OF PRODUCING SEPARATION COMPOSITE MEMBRANE

#40
20200016540
2020-01-16

Ion-exchange membrane having an imprinted non-woven substrate

#41
20190366277
2019-12-05

CO2-philic thin film composite membranes

#42
20190351372
2019-11-21

High separation performance polydialkylsiloxane pervaporation membranes

#43
20190329188
2019-10-31

MEMBRANE FOR THE ADSORPTION OF BACTERIA

#44
20190329184
2019-10-31

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

#45
20190270052
2019-09-05

MANUFACTURE OF A FILTRATION MEMBRANE

#46
20190224631
2019-07-25

Acrylonitrile-based membrane with low thrombogenicity

#47
20190168172
2019-06-06

Preparation of hand-carry gravity-driven water filter with high throughput and water disinfection performance

#48
20190083939
2019-03-21

Separation of gases via carbonized vinylidene chloride copolymer gas separation membranes and processes therefor

#49
20190076793
2019-03-14

Separation of gases via carbonized vinylidene chloride copolymer gas separation membranes and processes therefor

#50
20190054426
2019-02-21

Filtration membranes

#51
20190054226
2019-02-21

METHODS AND APPARATUS FOR KIDNEY DIALYSIS AND EXTRACORPOREAL DETOXIFICATION

#52
20190039024
2019-02-07

MIXED MATRIX MEMBRANE FILTRATION DEVICE FOR AN APPLIANCE

#53
20190022599
2019-01-24

Fluid separation membrane, fluid separation membrane module, and porous carbon fiber

#54
20190021947
2019-01-24

Sterile solutions product bag

#55
20190015547
2019-01-17

Semipermeable membrane and method of manufacturing the same

#56
20180326359
2018-11-15

Layered Membrane and Methods of Preparation Thereof

#57
20180290108
2018-10-11

Method of production of nanoporous membranes for water purification from metal ions at low differential pressures

#58
20180243783
2018-08-30

APPARATUS AND METHOD FOR ROLL-TO-ROLL MEMBRANE MANUFACTURE

#59
20180236403
2018-08-23

Nanofiber for filter medium, filter medium comprising same, method for producing same, and filter unit comprising same

#60
20180221828
2018-08-09

Acrylonitrile-based membrane with improved performance

#61
20180209072
2018-07-26

Charged nanofibers

#62
20180071686
2018-03-15

SUBSEA WATER PROCESSING SYSTEM AND ASSOCIATED METHODS

#63
20180043311
2018-02-15

Manufacturing of a nanofiber forward osmosis membrane with tubular shape

#64
20170216781
2017-08-03

Solvent-resistant separation membrane

#65
20170144111
2017-05-25

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

#66
20170095775
2017-04-06

Antibacterial and antifouling polymeric separation membrane and preparation method thereof

#67
20170056838
2017-03-02

Forward osmosis-based separation membrane based on multilayer thin film, using crosslinking between organic monomers, and preparation method therefor

#68
20170036173
2017-02-09

MEMBRANES AND METHOD FOR THE PRODUCTION THEREOF

#69
20170014777
2017-01-19

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

#70
20170014768
2017-01-19

HIGHLY PERMEABLE DOUBLE-SKINNED FORWARD OSMOSIS MEMBRANE FOR ANTI-FOULING IN THE EMULSIFIED OIL-WATER SEPARATION PROCESS

#71
20160354730
2016-12-08

METHOD FOR THE PRODUCTION OF POLY(METH)ACRYLONITRILE-BASED POLYMER MEMBRANES, POLYMER MEMBRANES, AND ALSO SOLUTIONS FOR THE PRODUCTION OF A POLYMER MEMBRANE

#72
20160325229
2016-11-10

Composite membranes and methods of use

#73
20160303524
2016-10-20

POLYACRYLONITRILE/CHITOSAN COMPOSITE NANOFILTRATION MEMBRANE CONTAINING GRAPHENE OXIDE AND PREPARATION METHOD THEREOF

#74
20160303523
2016-10-20

Zwitterion-containing membranes

#75
20160303518
2016-10-20

NANOCOMPOSITE ULTRAFILTRATION MEMBRANE CONTAINING GRAPHENE OXIDE OR REDUCED GRAPHENE OXIDE AND PREPARATION METHOD THEREOF

#76
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

#77
20160257575
2016-09-08

Portable pitcher for filtering and dispensing drinking water

#78
20160251234
2016-09-01

Portable water bottle assembly having a replaceable filter cartridge

#79
20160250602
2016-09-01

Manufacture of a filtration membrane

#80
20160250573
2016-09-01

MULTI-LAYERED COMPOSITE FILTER MEDIA AND PLEATED FILTER ELEMENT CONSTRUCTED THEREFROM

#81
20160184779
2016-06-30

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

#82
20160184778
2016-06-30

Functionalization of nanofibrous microfiltration membranes for water purification

#83
20160129172
2016-05-12

Capillary dialyzers

#84
20160096148
2016-04-07

Ceramic whole blood hollow fiber membrane filter medium and use thereof for separating blood plasma/serum from whole blood

#85
20160074569
2016-03-17

Polymeric whole blood hollow fiber membrane filter medium and use thereof for separating blood plasma/serum from whole blood

#86
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

#87
20150367294
2015-12-24

Process for the preparation of MOFs-porous polymeric membrane composites

#88
20150367291
2015-12-24

Virus filter

#89
20150343387
2015-12-03

Membranes having antibiotic and hydrophilic properties and preparation method thereof

#90
20150290381
2015-10-15

Methods and apparatus for kidney dialysis and extracorporeal detoxification

#91
20150290380
2015-10-15

Integrated device for liver support system

#92
20150273127
2015-10-01

Liver support system

#93
20150270523
2015-09-24

Porous membrane separator for secondary battery, method for producing the same, and secondary battery

#94
20150258501
2015-09-17

Composite nanofiber membrane for adsorbing lithium, method of manufacturing the same and apparatus and method for recovering lithium using the same

#95
20150141711
2015-05-21

Graphene oxide-based composite membranes

#96
20150108061
2015-04-23

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

#97
20150059578
2015-03-05

Selective water vapour transport membranes comprising a nanofibrous layer and methods for making the same

#98
20150053607
2015-02-26

Graphene Derivative Composite Membrane And Method For Fabricating The Same

#99
20150053079
2015-02-26

Hollow fiber carbon molecular sieve membrane and preparation and use thereof

#100
20150044464
2015-02-12

Method for preparing a nanofiber or non-woven mat

#101
20150014244
2015-01-15

COMPOSITE SEMIPERMEABLE MEMBRANE

#102
20140364567
2014-12-11

Styrene-siloxane triblock copolymers as membranes for selective transport of alcohols and other organic compounds in aqueous mixtures

#103
20140332462
2014-11-13

Flux-enhanced hierarchical porous membrane for oil-water nanoemulsion separation

#104
20140326659
2014-11-06

Preparation method of enhanced-type polyacrylonitrile hollow fiber membrane

#105
20140260986
2014-09-18

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

#106
20140155676
2014-06-05

Treatment system for removing halogenated compounds from contaminated sources

#107
20130327704
2013-12-12

Electrochemical separation membrane and the manufacturing method thereof

#108
20130327702
2013-12-12

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

#109
20130313185
2013-11-28

FORWARD OSMOSIS MEMBRANE AND METHOD OF MANUFACTURE

#110
20130240447
2013-09-19

Hierarchical porous membrane for emulsion separation

#111
20130233791
2013-09-12

SEPARATION MEMBRANE FOR WATER TREATMENT AND MANUFACTURING METHOD THEREOF

#112
20130213875
2013-08-22

High flux hollow fiber ultrafiltration membranes and process for the preparation thereof

#113
20130049246
2013-02-28

Process for production of porous membrane

#114
20120318731
2012-12-20

BIOFUNCTIONALIZED MICROFILTRATION OR ULTRAFILTRATION MEMBRANE

#115
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

#116
20120267304
2012-10-25

Membrane, method for manufacturing the same, and composite membrane including the same

#117
20120181228
2012-07-19

Polyacrylonitrile Copolymer, Method For Manufacturing Membrane Including The Same, Membrane Including The Same, And Water Treatment Module Using The Membrane

#118
20120145626
2012-06-14

Device for renal cell expansion

#119
20120043274
2012-02-23

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

#120
20120012520
2012-01-19

FORWARD OSMOSIS MEMBRANES AND METHOD FOR FABRICATING THE SAME

#121
20110198288
2011-08-18

Fouling resistant membranes formed with polyacrylonitrile graft copolymers

#122
20110163035
2011-07-07

Nanofiber-containing membrane, a composite membrane, a process for producing them and their use

#123
20110094377
2011-04-28

Recovery of a gaseous component from a mixture of gaseous compounds

#124
20100190965
2010-07-29

Method for separation of immunoglobulin monomers

#125
20090208807
2009-08-20

SOLID ELECTROLYTE MEMBRANE, METHOD AND APPARATUS FOR PRODUCING THE SAME, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL

#126
20090200235
2009-08-13

PERVAPORATION MEMBRANES AND METHODS OF USE

#127
20090169943
2009-07-02

SOLID ELECTROLYTE MULTILAYER MEMBRANE, METHOD AND APPARATUS OF PRODUCING THE SAME, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL

#128
20090130525
2009-05-21

Solid electrolyte multilayer membrane, method and apparatus for producing the same, membrane electrode assembly, and fuel cell

#129
20090130517
2009-05-21

SOLID ELECTROLYTE MEMBRANE, METHOD AND APPARATUS OF PRODUCING THE SAME, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL

#130
20080135481
2008-06-12

POLYARYLETHERNITRILE HOLLOW FIBER MEMBRANES

#131
20080095925
2008-04-24

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

#132
20070093562
2007-04-26

Polymeric Composition, Material Produced and Their Applications

#133
20070084794
2007-04-19

Porous membrane and method for manufacturing the same

#134
20060124537
2006-06-15

Pervaporation Membranes and Methods of Use

#135
20060084169
2006-04-20

Polymer substrate for cultivating cells, in particular keratinozytes

#136
20060058479
2006-03-16

Polymeric composition, material produced thereof and their applications

#137
20050006302
2005-01-13

Process for the preparation of porous membrane