ClassID:

30002

B01D71/16 - CPC Classification

Classification description:

Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor; Organic material; Polysaccharides; Cellulose derivatives; Esters of organic acids Cellulose acetate

Recent Application in this class:
#1
20260145140
2026-05-28

MECHANICALLY STABLE ULTRAFILTRATION MEMBRANE, AND METHOD FOR PRODUCING SAME

#2
20260125292
2026-05-07

WASTEWATER CONCENTRATION DEVICE AND CONCENTRATION METHOD

#3
20260054224
2026-02-26

FILTER MODULE, METHOD OF PRODUCING THE SAME, AND USE THEREOF

#4
20260042798
2026-02-12

CHROMATOGRAPHY-FREE ANTIBODY PURIFICATION METHOD

#5
20260042052
2026-02-12

SYSTEMS AND METHODS FOR SEPARATING A GAS MIXTURE THAT INCLUDES ORGANIC AND INORGANIC COMPOUNDS

#6
20250375724
2025-12-11

FILTER SYSTEM USABLE AS CELL CULTURE CLARIFICATION FILTER IN PROTEIN PURIFICATION

#7
20250367609
2025-12-04

Atomic Scale Paired Electron Bonding, Adsorption and Chelation for Removing Preservative Biocidal Agents from Rx and OTC Ophthalmic Therapeutics and Other Medical Solutions

#8
20250115538
2025-04-10

PROCESS FOR THE PRODUCTION AND PURIFICATION OF TRIFLUOROETHYLENE

#9
20250051251
2025-02-13

PROCESS FOR THE PREPARATION AND PURIFICATION OF TRIFLUOROETHYLENE

#10
20240375060
2024-11-14

POROUS MEMBRANE AND METHOD FOR MANUFACTURING POROUS MEMBRANE

#11
20240359144
2024-10-31

AGGREGATE SEPARATION METHOD

#12
20240299878
2024-09-12

CROSSLINKED POLYMER MEMBRANES AND METHODS OF THEIR PRODUCTION

#13
20240226813
2024-07-11

POLYMERIC MATERIALS AND METHODS FOR SELECTIVE ION SEPARATION OR TRANSPORT

#14
20240150954
2024-05-09

FILTRATION MEDIA AND SYSTEMS FOR REDUCTION OF MICROPOLLUTANTS IN LIQUIDS

#15
20240131475
2024-04-25

POLYMERIC MATERIALS AND METHODS FOR SELECTIVE ION SEPARATION OR TRANSPORT

#16
20240115890
2024-04-11

Biodegradable Nose Filter

#17
20240009625
2024-01-11

CELL RETENTION DEVICE

#18
20230277980
2023-09-07

High free volume membrane for gas separation

#19
20230191368
2023-06-22

Separation Matrix and Method of Separation

#20
20230076317
2023-03-09

Forward osmosis membrane and method of preparing same

#21
20230072568
2023-03-09

FORWARD OSMOSIS MEMBRANE AND METHOD OF PREPARING SAME

#22
20230055555
2023-02-23

METHOD FOR PREPARING PEPTIDE EMULSION FORMULATION

#23
20220410081
2022-12-29

Mechanically stable ultrafiltration membrane, and method for producing same

#24
20220379266
2022-12-01

POLYMER-BASED FILM, PREPARATION METHOD THEREFOR, AND USE THEREOF

#25
20220355253
2022-11-10

Desalination performance restoration agent for cellulose acetate membrane and desalination performance restoration method for cellulose acetate membrane

#26
20220280900
2022-09-08

MIXED MATRIX MEMBRANES AND METHODS OF MAKING AND USE THEREOF

#27
20220212139
2022-07-07

High free volume membrane for gas separation

#28
20220134289
2022-05-05

Hollow fiber membrane and method for producing hollow fiber membrane

#29
20220072478
2022-03-10

Cell retention device

#30
20210371457
2021-12-02

CHROMATOGRAPHY-FREE ANTIBODY PURIFICATION METHOD

#31
20210198136
2021-07-01

COMBINATORIAL MEMBRANE-BASED SYSTEMS AND METHODS FOR DEWATERING AND CONCENTRATING APPLICATIONS

#32
20210170345
2021-06-10

Crosslinked polymer membranes and methods of their production

#33
20210069400
2021-03-11

Methods and apparatus for kidney dialysis and extracorporeal detoxification

#34
20210060500
2021-03-04

Method for producing composition for forming gas separation membrane active layer, composition for forming gas separation membrane active layer produced by same, method for manufacturing gas separation membrane, and gas separation membrane

#35
20200400536
2020-12-24

Method for separating microplastics from animal excrement

#36
20200391158
2020-12-17

REVERSE OSMOSIS CENTRIFUGE

#37
20200345625
2020-11-05

Nanopore Delivery Device

#38
20200246530
2020-08-06

Gasless extra-corporeal carbon dioxide removal

#39
20200197880
2020-06-25

Separation membrane

#40
20200070099
2020-03-05

Cellulose acetate-based asymmetric hollow fiber membrane

#41
20200061545
2020-02-27

Composite hollow-fiber membrane and production method therefor

#42
20190299166
2019-10-03

Macroporous or mesoporous polymer films in hollow fiber geometry

#43
20190270054
2019-09-05

GAS SEPARATION MEMBRANES COMPRISING CROSSLINKED CELLULOSE ESTERS

#44
20190270051
2019-09-05

Cellulose acetate-based hollow fiber membrane

#45
20190240641
2019-08-08

FILTERING MEDIUM FOR SELECTIVE ADSORPTION OF BLOOD COMPONENTS, AND BLOOD FILTER

#46
20190224627
2019-07-25

Method for permeate flow path sanitization in a reverse osmosis system

#47
20190178803
2019-06-13

METHOD OF MEASURING CONCENTRATION OF DISSOLVED ORGANIC NITROGEN IN SEWAGE

#48
20190099711
2019-04-04

Methods and systems for removing COfrom a feed gas

#49
20190093907
2019-03-28

Blended membranes for water vapor transport and methods for preparing same

#50
20190060835
2019-02-28

Dead end membrane gas separation process

#51
20190054226
2019-02-21

METHODS AND APPARATUS FOR KIDNEY DIALYSIS AND EXTRACORPOREAL DETOXIFICATION

#52
20190022599
2019-01-24

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

#53
20180353907
2018-12-13

Purification of Lithium-Containing Brine

#54
20180318774
2018-11-08

Crosslinked polymer membranes and methods of their production

#55
20180280832
2018-10-04

Integrated membrane device

#56
20180224416
2018-08-09

GAS SENSOR AND METHOD OF MANUFACTURING THE SAME

#57
20180178169
2018-06-28

Multilayer Composite Gas Separation Membranes with two Selective Layers

#58
20180133644
2018-05-17

Multiple membrane separation process using glassy polymeric membrane and rubbery polymeric membrane

#59
20180126328
2018-05-10

METHODS AND APPARATUSES FOR FUEL GAS CONDITIONING VIA MEMBRANES

#60
20180111831
2018-04-26

Process for maximizing hydrogen recovery

#61
20180065093
2018-03-08

Separation membrane

#62
20170333835
2017-11-23

Gas separation membrane, gas separation module, gas separation apparatus, gas separation method, and method for producing asymmetric gas separation membrane

#63
20170326506
2017-11-16

MULTILAYER SEMIPERMEABLE MEMBRANE

#64
20170296981
2017-10-19

Gas separation membranes with intermixed layers

#65
20170225131
2017-08-10

Forward osmosis membrane and forward osmosis treatment system

#66
20170225116
2017-08-10

Method and apparatus for removing high concentration acid gas from natural gas

#67
20170209836
2017-07-27

Hollow-fiber membrane blood purification device

#68
20170203258
2017-07-20

Hydrophilic, light active coating for membranes

#69
20170184317
2017-06-29

Blended membranes for water vapor transport and methods for preparing same

#70
20170150685
2017-06-01

Desalination membranes for subsurface irrigation

#71
20170080391
2017-03-23

HIGHLY EFFICIENT REVERSE OSMOSIS FILTER

#72
20170014753
2017-01-19

Process design for acid gas removal

#73
20160375407
2016-12-29

Membrane fouling reduction using chemical micropumps

#74
20160272513
2016-09-22

BRINE MINING PROCESS

#75
20160220966
2016-08-04

Gas separation membrane and gas separation membrane module

#76
20160214069
2016-07-28

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

#77
20150375177
2015-12-31

Crosslinked cellulosic membranes

#78
20150360184
2015-12-17

Techniques for preparing multi-layer polymeric and mixed matrix membranes and a device for membrane distillation

#79
20150343389
2015-12-03

Curable compositions and membranes

#80
20150328583
2015-11-19

Method and apparatus for removing high concentration acid gas from natural gas

#81
20150298071
2015-10-22

Composite gas separation membranes with dialkysiloxane intermediate layer

#82
20150290381
2015-10-15

Methods and apparatus for kidney dialysis and extracorporeal detoxification

#83
20150265976
2015-09-24

Hollow fiber semipermeable membrane, method for manufacturing same, module, and water treatment method

#84
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

#85
20150251140
2015-09-10

Hollow fiber membrane for dehydration of organic solvents via pervaporation process and a method of fabricating the same

#86
20150209733
2015-07-30

Process for preparing membranes

#87
20150190762
2015-07-09

Membranes

#88
20150175919
2015-06-25

DEWATERING SYSTEM FOR INCREASING THE COMBINED CYCLE EFFICIENCY OF A COAL POWERPLANT

#89
20150165369
2015-06-18

Process for preparing membranes

#90
20150143995
2015-05-28

Gas separation membranes with intermixed layers

#91
20150136690
2015-05-21

METHOD OF MAKING A MEMBRANE AND A MEMBRANE FOR WATER FILTRATION

#92
20150108061
2015-04-23

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

#93
20150053607
2015-02-26

Graphene Derivative Composite Membrane And Method For Fabricating The Same

#94
20150040758
2015-02-12

METHOD AND APPARATUS FOR CRYOGEN-FREE CONCENTRATION OF A HYPERPOLARIZED GAS IN A CONTINUOUSLY FLOWING STREAM OF GAS, AND USE

#95
20150027945
2015-01-29

Membrane filter including bile acid and a method of manufacturing the same

#96
20150020685
2015-01-22

Hollow fiber membranes and methods for forming same

#97
20150014244
2015-01-15

COMPOSITE SEMIPERMEABLE MEMBRANE

#98
20150008185
2015-01-08

Hollow fiber type semipermeable membrane, method for manufacturing the same, module, and water treatment method

#99
20140339154
2014-11-20

Polymer inclusion membranes for use in processes for treating thiocyanate containing aqueous solutions

#100
20140260986
2014-09-18

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

#101
20140243572
2014-08-28

Hybrid membrane system for gas streams with condensable hydrocarbons

#102
20140209539
2014-07-31

Polymer-carbon nanotube nanocomposite porous membranes

#103
20140158610
2014-06-12

Composite mixed matrix membranes for membrane distillation and related methods of manufacture

#104
20140091032
2014-04-03

Asymmetric nanotube containing membranes

#105
20130327704
2013-12-12

Electrochemical separation membrane and the manufacturing method thereof

#106
20130140236
2013-06-06

Hollow fiber type reverse osmosis membrane and method for manufacturing the same

#107
20130048559
2013-02-28

Method of preparing a substrate for immobilization of functional substances thereon and the substrate obtained therefrom

#108
20120234761
2012-09-20

Asymmetric nanotube containing membranes

#109
20120210869
2012-08-23

Delamination free membrane

#110
20120175300
2012-07-12

TWO-LAYER MEMBRANE

#111
20120085697
2012-04-12

CAST-ON-TRICOT ASYMMETRIC AND COMPOSITE SEPARATION MEMBRANES

#112
20120074068
2012-03-29

Polysaccharide matrix having a grafted polymer, method for producing the same and use thereof

#113
20120043274
2012-02-23

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

#114
20120031840
2012-02-09

Method for reducing amyloid beta concentration in blood

#115
20110290730
2011-12-01

Asymmetric nanotube containing membranes

#116
20110186506
2011-08-04

Asymmetric nanotube containing membranes

#117
20110070028
2011-03-24

Reverse osmosis irrigation

#118
20100330691
2010-12-30

Apparatus for producing surface enhanced membrane

#119
20100326273
2010-12-30

PLASTICIZATION RESISTANT MEMBRANES

#120
20100288122
2010-11-18

Crosslinked organic-inorganic hybrid membranes and their use in gas separation

#121
20100270234
2010-10-28

PLASTICIZATION RESISTANT MEMBRANES

#122
20100218477
2010-09-02

Dewatering system and process for increasing the combined cycle efficiency of a coal powerplant

#123
20100200493
2010-08-12

Process of forming multilayered structures

#124
20100075101
2010-03-25

Cast-on-Tricot Asymmetric and Composite Separation Membranes

#125
20100059440
2010-03-11

Cross-linked cellulose membranes

#126
20100032366
2010-02-11

Process of forming multilayered structures

#127
20100000937
2010-01-07

Fluororesin polymer separation membrane and process for producing the same

#128
20090318620
2009-12-24

High plasticization-resistant cross-linked polymeric membranes for separations

#129
20090299015
2009-12-03

Crosslinked organic-inorganic hybrid membranes and their use in gas separation

#130
20090255405
2009-10-15

Gas separation membrane

#131
20090178969
2009-07-16

Polymer separation membrane and process for producing the same

#132
20080277828
2008-11-13

Method for making high flux, high salt rejection cellulose desalting membranes

#133
20080221497
2008-09-11

Use of Arginine and Like Substances and methylglyoxal and Like Substances in Dialysis Machines

#134
20070102350
2007-05-10

Method for producing polymeric membranes with high-recovery rate

#135
20070026219
2007-02-01

Cellulose-based microporous membrane

#136
20060226067
2006-10-12

Asymmetric forward osmosis membranes

#137
20060180544
2006-08-17

Process of forming multilayered structures

#138
20060180543
2006-08-17

Process of forming multilayered structures

#139
20060086657
2006-04-27

Process of forming multilayered structures

#140
20050040101
2005-02-24

Hollow fiber membrane for the treatment of waste lubricants and method for its production

#141
20050040100
2005-02-24

Process of forming multilayered structures

#142
16986606
2020-11-24

Cellulose acetate V/ZN photocatalytic material

#143
16594783
2020-12-22

Composite photocatalysts embedded in microporous membranes