ClassID:

30023

B01D71/58 - CPC Classification

Classification description:

Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor; Organic material Other polymers having nitrogen in the main chain, with or without oxygen or carbon only

Sub-classes:
Recent Application in this class:
#1
20260070027
2026-03-12

Hollow-Fiber Membrane Made From A Polymeric Blend Comprising An Aromatic Sulfone Polymer And Polyoxazoline

#2
20260021450
2026-01-22

MICROFILTRATION MEMBRANE

#3
20250281872
2025-09-11

CARBON DIOXIDE SELECTIVE MEMBRANES, GAS SEPARATION SYSTEMS INCLUDING THE CARBON DIOXIDE SELECTIVE MEMBRANES, AND RELATED METHODS

#4
20250196072
2025-06-19

POLY(QUINOLINE) MEMBRANES

#5
20250145769
2025-05-08

CROSS-LINKED ARYLIMIDAZOLIUM POLYMERS AND USES THEREOF

#6
20240416290
2024-12-19

SEPARATION MEMBRANE

#7
20240408552
2024-12-12

METHOD FOR PREPARING A NOVEL GUANIDINE-BASED COMPOSITE NANOFILTRATION FLAT-SHEET MEMBRANE

#8
20240359160
2024-10-31

COMPOSITE COMPRISING A LIQUID CRYSTALALLINE COMPOUND AND AN ANISOTROPIC METAL ORGANIC FRAMEWORK PARTICLE, AND A LAMINATE COMPRISING THE SAME

#9
20240157306
2024-05-16

HOLLOW-FIBER MEMBRANE AND METHOD MAKING THEREOF

#10
20240116009
2024-04-11

Coated composite hollow fiber gas separation membranes with improved permeance and separation layer adhesion

#11
20240100490
2024-03-28

POLYFLUORENE-BASED ANION EXCHANGE COMPOSITE MEMBRANE AND METHOD FOR PREPARING SAME

#12
20240082790
2024-03-14

FILTRATION MEMBRANE FROM A BLEND COMPRISING POLYSULFONE AND POLYOXAZOLINE AND METHOD MAKING THEREOF

#13
20240026152
2024-01-25

Synthetic membrane composition comprising a polyurethane and a polyoxazoline

#14
20230383063
2023-11-30

CROSSLINKED POLYPHOSPHAZENE BLENDS FOR GAS SEPARATION MEMBRANES

#15
20230144222
2023-05-11

COMPOSITE SEMIPERMEABLE MEMBRANE, SPIRAL MEMBRANE ELEMENT, WATER TREATMENT SYSTEM, AND WATER TREATMENT METHOD

#16
20230129711
2023-04-27

LAMINATE

#17
20230015162
2023-01-19

MICROFILTRATION MEMBRANE

#18
20220401893
2022-12-22

POLY(QUINOLINE) MEMBRANES

#19
20220387941
2022-12-08

Process for making membranes

#20
20220387682
2022-12-08

Phosphate adsorbing agent for blood processing, blood processing system and blood processing method

#21
20220119437
2022-04-21

Synthesis of oligosaccharides

#22
20220016570
2022-01-20

SELECTIVELY PERMEABLE POLYMERIC MEMBRANE

#23
20210308626
2021-10-07

Polyurethane/polyvinylidene fluoride composite membrane for extracting organic sulfide from naphtha and preparation method therefor

#24
20210260537
2021-08-26

Ligand-modified filter and methods for reducing metals from liquid compositions

#25
20210220777
2021-07-22

FILTER DEVICE

#26
20210197141
2021-07-01

SEPARATION MEMBRANE MODULE

#27
20210121830
2021-04-29

Separation membrane

#28
20210079180
2021-03-18

Synthetic membrane composition comprising a fluorinated polyurethane

#29
20210070989
2021-03-11

Synthetic membrane composition comprising a polyurethane and a polyoxazoline

#30
20200254399
2020-08-13

Process for making membranes

#31
20200215486
2020-07-09

Synthesis of oligosaccharides

#32
20200197858
2020-06-25

METHOD OF SEPARATING A GAS MIXTURE COMPRISING FIRST AND SECOND GASESUSING A GAS SEPARATION MEMBRANE MODULE HAVING A PLURALITY OF MEMBRANE ELEMENTS

#33
20200164320
2020-05-28

Polyelectrolyte multilayer (PEM) membranes and their use

#34
20200148793
2020-05-14

Purification of oligosaccharides

#35
20200123184
2020-04-23

Purification of oligosaccharides

#36
20200094196
2020-03-26

Acid-resistant nano-separation membrane having enhanced flow rate, and method for manufacturing same

#37
20200094194
2020-03-26

Separation membrane

#38
20200061547
2020-02-27

Isomer separation with highly fluorinated polymer membranes

#39
20200014050
2020-01-09

Method of production of channel member for fuel cell

#40
20200014049
2020-01-09

Method of production of channel member for fuel cell

#41
20180326136
2018-11-15

PHOSPHATE ADSORBING AGENT FOR BLOOD PROCESSING, BLOOD PROCESSING SYSTEM AND BLOOD PROCESSING METHOD

#42
20180318765
2018-11-08

Method for manufacturing water treatment separator, water treatment separator manufactured using same, and water treatment module comprising water treatment separator

#43
20180290107
2018-10-11

Filter device

#44
20180230272
2018-08-16

Ionic polyamide and polyamide-imide materials and methods of use

#45
20180229189
2018-08-16

Composition for interfacial polymerization of polyamide and method for manufacturing reverse osmosis membrane using same

#46
20180221829
2018-08-09

IN-SITU SOLAR-TO-HEAT COATING FOR DRINKING WATER PURIFICATION, SEAWATER DESALINATION, AND WASTEWATER TREATMENT

#47
20180215792
2018-08-02

TWO-DIMENSIONAL STRUCTURES FROM PEPTOID OLIGOMERS AND METHODS OF MAKING

#48
20180015423
2018-01-18

3D polymer nanofiber membrane composed of 1D individual polymer nanofibers which are quasi-aligned and cross-laminated like grid structure with functions of controlling pore distribution and size, and manufacturing method thereof

#49
20170331137
2017-11-16

Method of production of channel member for fuel cell

#50
20170296977
2017-10-19

Development of nanofiltration system with La/SnO—TiOnanoparticles

#51
20170225127
2017-08-10

Method of making reaction induced phase separation membranes and uses thereof

#52
20170210101
2017-07-27

Asymmetric polymeric membranes containing a metal-rich dense layer with a controlled thickness and method of making same

#53
20170209836
2017-07-27

Hollow-fiber membrane blood purification device

#54
20170166704
2017-06-15

Polymers and process for making membranes

#55
20170113193
2017-04-27

Process for making membranes

#56
20170028358
2017-02-02

HYDROPHILIZING PTFE MEMBRANES

#57
20160369057
2016-12-22

Poly-benzimidazole with pyrene and anthracene flourophore

#58
20160317982
2016-11-03

Hydrophilically modified fluorinated membrane (VI)

#59
20160296891
2016-10-13

ORGANIC/INORGANIC HYBRID MEMBRANE FOR FOULING RESISTANCE, METHOD OF PREPARING MEMBRANE FOR FOULING RESISTANCE, AND WATER TREATMENT DEVICE INCLUDING SAID MEMBRANE

#60
20160220965
2016-08-04

Porous membrane, blood purifying module incorporating porous membrane, and method for producing porous membrane

#61
20160207010
2016-07-21

Base stable semipermeable membrane and methods thereof

#62
20160068565
2016-03-10

METHOD FOR HARVESTING CULTURE PRODUCT

#63
20160038888
2016-02-11

ION EXCHANGE MEMBRANES SELECTIVELY PERMEABLE TO SPECIFIC IONS

#64
20160030894
2016-02-04

Resilient anion exchange membranes prepared by polymerizing a composition

#65
20150375175
2015-12-31

Method of fabricating nanoporous organic-inorganic hybrid film and nanoporous organic-inorganic hybrid film manufactured by the method and nanoporous membrane employing the nanoporous organic-inorganic hybrid film

#66
20150314245
2015-11-05

COMPOSITE SEPARATION MEMBRANE

#67
20150285781
2015-10-08

Droplet interfaces

#68
20150273405
2015-10-01

FLUID SEPARATION UNIT

#69
20150273389
2015-10-01

Nanoporous macrocycle-containing cross-linked polymeric membranes for separations

#70
20150258505
2015-09-17

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

#71
20150251140
2015-09-10

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

#72
20150218330
2015-08-06

Radiation cured membranes derived from polymers that are co-reactive with azide crosslinking agent(s)

#73
20150210816
2015-07-30

Polymer blend for membranes

#74
20150165390
2015-06-18

Carbon-dioxide-separating membrane

#75
20150068978
2015-03-12

ENHANCMENT OF MEMBRANE ROBUSTNESS BY TREATMENT WITH IONIC MATERIALS

#76
20150053610
2015-02-26

Mixed matrix membranes with embedded polymeric particles and networks and related compositions, methods, and systems

#77
20140360366
2014-12-11

Azide crosslinked and physically crosslinked polymers for membrane separation

#78
20140339154
2014-11-20

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

#79
20140260986
2014-09-18

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

#80
20140255636
2014-09-11

Polymeric Membranes

#81
20140202953
2014-07-24

Multilayer Membrane Containing Carbon Nanotube Manufactured by Layer-By-Layer Assembly Method

#82
20140158611
2014-06-12

HOLLOW-FIBER MEMBRANE BLOOD PURIFICATION DEVICE

#83
20140137740
2014-05-22

Carbon dioxide separation member, method for producing same, and carbon dioxide separation module

#84
20140091034
2014-04-03

NANOPARTICULATE FIBER SOLUTION, ITS FABRICATION PROCESS, AND NANOPARTICULATE FIBER MEMBRANE FILTER

#85
20140039079
2014-02-06

Porous polymer membrane with covalent network structure and production method thereof

#86
20130247756
2013-09-26

UV-REARRANGED PIM-1 POLYMERIC MEMBRANES AND A PROCESS OF PREPARING THEREOF

#87
20130153489
2013-06-20

Semi-permeable film and separation membrane including nanoporous material, and method of manufacturing the same

#88
20130012633
2013-01-10

HYBRID COMPOSITION AND MEMBRANE BASED ON SILYLATED HYDROPHILIC POLYMER

#89
20110240556
2011-10-06

Membrane compositions and methods for making and using them

#90
20110046074
2011-02-24

Highly permeable polymeric membranes

#91
20100305289
2010-12-02

HYBRID COMPOSITION AND MEMBRANE BASED ON SILYLATED HYDROPHILIC POLYMER

#92
20100197859
2010-08-05

Blends from branched polyaryl ethers and hydrophilic polymers

#93
20070003808
2007-01-04

Membranes for fuel cells, method for producing said membranes and production of fuel cells using membranes of this type

#94
18638505
2024-12-31

Mixed matrix membranes containing covalent triazine frameworks

#95
16543928
2024-01-09

Crosslinked polyphosphazene blends for gas separation membranes