ClassID:

30887

B01D2323/21 - CPC Classification

Classification description:

Details relating to membrane preparation; Use of additives Fillers

Recent Application in this class:
#1
20260138094
2026-05-21

PROCESSES FOR PREPARING ASYMMETRIC HOLLOW FIBER MEMBRANES, ASYMMETRIC HOLLOW FIBER MEMBRANES AND USE OF ASYMMETRIC HOLLOW FIBER MEMBRANES

#2
20260022036
2026-01-22

PERVAPORATION MEMBRANE

#3
20260021456
2026-01-22

PERVAPORATION MEMBRANE

#4
20260021455
2026-01-22

PERVAPORATION MEMBRANE

#5
20250276293
2025-09-04

METHOD FOR SEPARATING AN OIL-WATER EMULSION

#6
20240238732
2024-07-18

PROCESSES FOR PREPARING ASYMMETRIC HOLLOW FIBER MEMBRANES, ASYMMETRIC HOLLOW FIBER MEMBRANES AND USE OF ASYMMETRIC HOLLOW FIBER MEMBRANES

#7
20240139689
2024-05-02

Microporous polyolefin membranes from bespoke solvents

#8
20240042394
2024-02-08

MICROPOROUS POLYOLEFIN MEMBRANES FROM BESPOKE SOLVENTS

#9
20230390710
2023-12-07

MEMBRANES MADE USING FINE POWDERS

#10
20230381720
2023-11-30

MICROPOROUS MEMBRANES, UNDERLAYMENT, ROOFING, FLASHING, WRAP, AND METHODS FOR MAKING AND USING THE SAME

#11
20230381719
2023-11-30

Photothermal photocatalytic membrane for seawater desalination and uranium extraction and preparation method therefor

#12
20230285908
2023-09-14

Adsorbent cartridge for oil/water separation

#13
20230256397
2023-08-17

DUAL-LAYER MEMBRANE

#14
20230016870
2023-01-19

Gas separation membranes

#15
20220362718
2022-11-17

POROUS ARTICLES, PROCESSES FOR THEIR PREPARATION AND USES THEREOF

#16
20220323913
2022-10-13

Method for Fabricating Mixed-Matrix Membranes and Methods of Use

#17
20220152558
2022-05-19

Desalination membranes

#18
20220016577
2022-01-20

FLAT SHEET MEMBRANE FILTRATION MODULE WITH CYLINDRICAL HOUSING

#19
20210394129
2021-12-23

SEPARATION MEMBRANE AND MEMBRANE SEPARATION METHOD

#20
20210237003
2021-08-05

Rice-husk derived silicon carbide membrane sorbent for oil removal

#21
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

#22
20210113970
2021-04-22

Microporous membranes, underlayment, roofing, flashing, wrap, and methods for making and using the same

#23
20200360866
2020-11-19

Composite porous membrane and preparation method therefor and use thereof

#24
20200215586
2020-07-09

Filter cleaning method and filter cleaning apparatus

#25
20200147559
2020-05-14

Boron-nitride nanotube membranes

#26
20200038813
2020-02-06

Method for hydrophilizing porous membrane and method for manufacturing ion-exchange membrane using same

#27
20200001241
2020-01-02

DRAWN SILICONE MEMBRANES

#28
20190292074
2019-09-26

Methods for preparing porous nanocomposite polymer hydrogel beads for water treatment

#29
20190143276
2019-05-16

Selective interfacial mitigation of graphene defects

#30
20190126209
2019-05-02

Reinforced oil-absorptive membrane material, unit and preparation method thereof

#31
20190083940
2019-03-21

Method for preparing membrane and associated membrane and filter element

#32
20190070330
2019-03-07

Treated membrane for fragrance delivery

#33
20180280889
2018-10-04

Doping of inorganic minerals to hydrophobic membrane surface

#34
20180207589
2018-07-26

Radiation-Curable Compositions, Membranes and the Manufacture and Use of Such Membranes

#35
20170296976
2017-10-19

Selective interfacial mitigation of graphene defects

#36
20170151534
2017-06-01

SUBSTRATE FOR LIQUID FILTER AND METHOD FOR PRODUCING THE SAME

#37
20170129789
2017-05-11

Hydrocarbon waste stream purification processes using microporous materials having filtration and adsorption properties

#38
20160367948
2016-12-22

Crosslinked polymer, method for producing the same, molecular sieve composition and material separation membranes

#39
20160317974
2016-11-03

Method for preparing a resin-treated microporous membrane

#40
20160136572
2016-05-19

Acidic gas separation laminate and acidic gas separation module provided with laminate

#41
20160129399
2016-05-12

Doping of inorganic minerals to hydrophobic membrane surface

#42
20160096149
2016-04-07

NANOCOMPOSITE MIXED-MATRIX MEMBRANE

#43
20150353381
2015-12-10

Porous nanocomposite polymer hydrogels for water treatment

#44
20150246321
2015-09-03

Porous polymeric membrane with high void volume

#45
20150038608
2015-02-05

Manufacturing method of porous polymer film using vanadium oxide nanowire, and porous polymer film prepared therefrom

#46
20150027306
2015-01-29

GAS-SELECTIVE POLYMER DERIVED CERAMIC MEMBRANES, GAS SEPARATION SYSTEMS, AND METHODS

#47
20140165838
2014-06-19

Air conditioning system

#48
20130171499
2013-07-04

Porous membrane and method for manufacturing the same

#49
20120232178
2012-09-13

Surface free energy based filled polymer microporous films

#50
20120228792
2012-09-13

Post processing filled microporous membranes

#51
20120228214
2012-09-13

Filled porous membrane

#52
20120055867
2012-03-08

Doping of inorganic minerals to hydrophobic membrane surface

#53
20110189472
2011-08-04

Uniaxially and Biaxially-Oriented Polytetrafluoroethylene Structures

#54
20110169201
2011-07-14

METHODS OF MAKING A MIXTURE FOR A PTFE MEMBRANE WITH INORGANIC MATERIALS, AND COMPOSITIONS RELATED THERETO

#55
20110168624
2011-07-14

Spiral wound carbon membrane and preparation method thereof

#56
20110089110
2011-04-21

Filled polymeric membranes, use and method of manufacturing

#57
20100018926
2010-01-28

Mixed Matrix Membranes Containing Ion-Exchanged Molecular Sieves

#58
20090212469
2009-08-27

Methods of making a mixture for a PTFE membrane with inorganic materials, and compositions related thereto

#59
20090149565
2009-06-11

Method for Making High Performance Mixed Matrix Membranes

#60
20090149313
2009-06-11

Mixed Matrix Membranes Containing Low Acidity Nano-Sized SAPO-34 Molecular Sieves

#61
20090142638
2009-06-04

COMPOSITE POROUS MEMBRANE, METHOD FOR PRODUCING COMPOSITE POROUS MEMBRANE, SOLID POLYMER ELECTROLYTE MEMBRANE, AND FUEL CELL

#62
20090131544
2009-05-21

Extrusion of a thermoplastic polymer bearing acid ionic groupings

#63
20090011208
2009-01-08

Ceramics made of preceramic paper or board structures, method of producing the same and use thereof

#64
20080141863
2008-06-19

Method of making high performance mixed matrix membranes using suspensions containing polymers and polymer stabilized molecular sieves

#65
20070259240
2007-11-08

Non-Perfluorinated Resins Containing Ionic or Ionizable Groups and Products Containing the Same

#66
20060292324
2006-12-28

Uniaxially and biaxially-oriented polytetrafluoroethylene structures

#67
20060057464
2006-03-16

Method of producing nanoparticle-filled phase inversion polymer electrolyte

#68
20050212160
2005-09-29

Method of processing colloidal size polytetrafluoroethylene resin particles to produce biaxially-oriented structures