ClassID:

33460

B01J43/00 - CPC Classification

Classification description:

Amphoteric ion-exchange, i.e. using ion-exchangers having cationic and anionic groups; Use of material as amphoteric ion-exchangers; Treatment of material for improving their amphoteric ion-exchange properties

Recent Application in this class:
#1
20250382202
2025-12-18

Metal-Organic Frameworks for the Removal of Multiple Liquid Phase Compounds and Methods for Using and Making Same

#2
20250368550
2025-12-04

MITIGATION AND RECOVERY OF DEGRADED DEVICE EFFICIENCY IN WATER ELECTROLYZERS CAUSED BY IMPURITIES

#3
20240375095
2024-11-14

PRE-TREATED ION EXCHANGE RESIN FOR ALTERNATIVE ENERGY POWER SOURCE HEAT TRANSFER SYSTEMS WITH LOW CONDUCTIVITY COOLANT REQUIREMENTS

#4
20240367161
2024-11-07

MULTIMODAL CHROMATOGRAPHY RESINS WITH ANIONIC AND CATIONIC LIGANDS

#5
20230405575
2023-12-21

Membranes

#6
20230369670
2023-11-16

Method for recovering active metal of lithium secondary battery

#7
20230347333
2023-11-02

Membranes

#8
20230311071
2023-10-05

Composite Membrane

#9
20230271853
2023-08-31

Metal-Organic Frameworks for the Removal of Multiple Liquid Phase Compounds and Methods for Using and Making Same

#10
20230028182
2023-01-26

APPARATUSES, SYSTEMS, AND METHOD FOR FILTRATION

#11
20220380406
2022-12-01

GLYCOFORM PURIFICATION

#12
20220362741
2022-11-17

HYDROLYTICALLY STABLE ZWITTERIONIC CHROMATOGRAPHIC MATERIALS

#13
20220169929
2022-06-02

Methods of Using Ionic Liquids as Demulsifiers

#14
20220098494
2022-03-31

Methods of using ionic liquids as corrosion inhibitors

#15
20220098060
2022-03-31

Metal-organic frameworks for the removal of multiple liquid phase compounds and methods for using and making same

#16
20220056345
2022-02-24

IONIC LIQUIDS AND METHODS OF USING SAME

#17
20220025091
2022-01-27

RESIN FOR DESALINATION AND PROCESS OF REGENERATION

#18
20210220814
2021-07-22

POROUS MATERIALS FOR SOLID PHASE EXTRACTION AND CHROMATOGRAPHY AND PROCESSES FOR PREPARATION AND USE THEREOF

#19
20210197187
2021-07-01

Micropore-filled double-sided membrane for low vanadium ion permeability and method for manufacturing same

#20
20210147332
2021-05-20

Process for separation and purification of a dicarboxylic acid containing mixture

#21
20210046423
2021-02-18

Membranes for enhancing rates of water dissociation and water formation

#22
20210008538
2021-01-14

Bifunctional absorptive material capable of absorbing both cations and anions in aqueous phase

#23
20200376480
2020-12-03

Amphoteric dissociation ion exchange medium and uses thereof and method for calibrating separation capacity thereof

#24
20200287230
2020-09-10

Polymer electrolyte membrane, method for manufacturing same, and membrane electrode assembly comprising same

#25
20200207896
2020-07-02

MIXED-CHARGE POLYMERS

#26
20200109068
2020-04-09

Metal-organic frameworks for the removal of multiple liquid phase compounds and methods for using and making same

#27
20200078736
2020-03-12

Nanostructured polyelectrolytes for ion-selective membranes

#28
20200017790
2020-01-16

Methods of using ionic liquids as paraffin inhibitors, pour point depressants and cold flow improvers

#29
20200009545
2020-01-09

POROUS MATERIALS FOR SOLID PHASE EXTRACTION AND CHROMATOGRAPHY AND PROCESSES FOR PREPARATION AND USE THEREOF

#30
20190291095
2019-09-26

AMPHOTERIC DISSOCIATION ION EXCHANGE MEDIUM AND USES THEREOF AND METHOD FOR CALIBRATING SEPARATION CAPACITY THEREOF

#31
20190224664
2019-07-25

Antifouling compositions and methods

#32
20190218250
2019-07-18

Methods of reducing level of one or more impurities in a sample during protein purification

#33
20180366735
2018-12-20

Polymer protecting layer, lithium metal negative electrode, lithium secondary battery

#34
20180353939
2018-12-13

Mixed-mode chromatography membranes

#35
20170362156
2017-12-21

Process for making acrylic acid from dextrose

#36
20170301920
2017-10-19

POLYMER PROTECTING LAYER, LITHIUM METAL NEGATIVE ELECTRODE, LITHIUM SECONDARY BATTERY

#37
20170267715
2017-09-21

Moisture displacement and simultaneous migration of surface-functionalized algae from water to an extraction solvent using ionic polyelectrolytes

#38
20170165659
2017-06-15

Particulate medium prepared from partially decomposed organic matter for selective sorption between competing metal ions in aqueous solutions

#39
20170092958
2017-03-30

Alkaline metal-air battery cathode

#40
20170047136
2017-02-16

Ion exchange column configured to reduce internal levels of radiolytic hydrogen gas

#41
20170028394
2017-02-02

Ion-exchange composition comprising a complex of support particles, dispersant, and electrostatically bound layering particles

#42
20170005356
2017-01-05

Solid ionically conducting polymer material

#43
20160193547
2016-07-07

Enantioselective zwitterionic ion-exchange material

#44
20160053088
2016-02-25

Triazine compounds containing phosphorous as flame retardants

#45
20160016992
2016-01-21

Methods of reducing level of one or more impurities in a sample during protein purification

#46
20150307966
2015-10-29

Process, method and plant for recovering scandium

#47
20150118128
2015-04-30

Fuel processor and hydrogen purification device thereof

#48
20140263072
2014-09-18

Process and plant for treating water

#49
20140255805
2014-09-11

Fuel cell system having biogas desulfurizer assembly with manganese oxide desulfurizer material

#50
20140238935
2014-08-28

Mixed-Mode Chromatography Membranes

#51
20140235846
2014-08-21

Polyelectrolyte-Coated Ion-Exchange Particles

#52
20140190893
2014-07-10

Ampholytic polymeric system

#53
20140178912
2014-06-26

Separation of glycans by mixed-mode liquid chromatography

#54
20140171719
2014-06-19

UZM-39 aluminosilicate zeolite

#55
20140166581
2014-06-19

POROUS HYBRID MONOLITH MATERIALS WITH ORGANIC GROUPS REMOVED FROM THE SURFACE

#56
20140096596
2014-04-10

Porous materials for solid phase extraction and chromatography and processes for preparation and use thereof

#57
20140080930
2014-03-20

Process for producing fluorinated copolymer

#58
20140076013
2014-03-20

Composite for phosphate and ammonium ion removal

#59
20140073762
2014-03-13

MULTIPLE STATIONARY PHASE MATRIX AND USES THEREOF

#60
20140070139
2014-03-13

Nanoscale ionic material (NIM) compositions via acid/base reaction

#61
20140066674
2014-03-06

UZM-39 aluminosilicate zeolite

#62
20140005364
2014-01-02

Specific sorbent for binding proteins and peptides, and separation method using the same

#63
20130264209
2013-10-10

Ion exchanger, method of manufacturing the same, and ion exchange filter device and electro-deionization device including the same

#64
20130200002
2013-08-08

Calcium removal method

#65
20130197200
2013-08-01

Methods of reducing level of one or more impurities in a sample during protein purification

#66
20130164213
2013-06-27

UZM-39 aluminosilicate zeolite

#67
20120292244
2012-11-22

POLYELECTROLYTE-COATED SIZE-EXCLUSION ION-EXCHANGE PARTICLES

#68
20120152759
2012-06-21

Perchlorate removal from concentrated salt solutions using amphoteric ion-exchange resins

#69
20120016043
2012-01-19

Poly(arylene ether) copolymer having cation-exchange group, process of manufacturing the same, and use thereof

#70
20110309017
2011-12-22

METHODS AND DEVICES FOR ENHANCING CONTAMINANT REMOVAL BY RARE EARTHS

#71
20110121229
2011-05-26

ENANTIOSELECTIVE ZWITTERIONIC ION-EXCHANGE MATERIAL

#72
20100317841
2010-12-16

Polyelectrolyte-Coated Size-Exclusion Ion-Exchange Particles

#73
20100237019
2010-09-23

Process for separating a charged species from an aqueous system

#74
20090277838
2009-11-12

Functionalized substrates with ion-exchange properties

#75
20090234032
2009-09-17

HYDROPHILIC, COMPOSITE, MICROPOROUS MEMBRANE AND ITS PRODUCTION METHOD

#76
20090166295
2009-07-02

ADSORPTIVE ION-EXCHANGE MATERIAL AND METHOD FOR FILTERING METAL IONS USING THE MATERIAL

#77
20090107918
2009-04-30

Amphoteric ion exchangers

#78
20090005265
2009-01-01

Method of isolating nucleic acid using material positively charged at first pH and containing amino group and carboxyl group

#79
20070241056
2007-10-18

Amphoteric ion exchangers for the adsorption of oxo anions

#80
20070215547
2007-09-20

Porous Hybrid Monolith Materials With Organic Groups Removed From the Surface

#81
20070007196
2007-01-11

Filter cartridge for fluid for treating surface of electronic device substrate

#82
20060264621
2006-11-23

pH dependent ion exchange material capable of selectively binding to nucleic acids in comparison with proteins, solid substrate having the material immobilized on its surface, and method of isolating a nucleic acid using the material or the solid substrate

#83
20060154284
2006-07-13

Method of isolating nucleic acid using material positively charged at first pH and containing amino group and carboxyl group

#84
20060135360
2006-06-22

Process for preparing porous hybrid comprising zeolite and chitosan and porous hybrid prepared thereby

#85
20060084765
2006-04-20

Crosslinked (meth)acrylamide particles, process for their production and their use

#86
20060060537
2006-03-23

Method of removing nitric acid from aqueous liquid and method of producing drinks

#87
20060054561
2006-03-16

Sulfate-selective anion exchange resins for use in combination with TRSS resins in feed water treatment

#88
20060041116
2006-02-23

Dual-functional ion exchange resins from agricultural by-products

#89
20050274663
2005-12-15

[Air and Water Conditioning System and Filter Media]

#90
20050269254
2005-12-08

[Air and Water Purifying System And Filter Media]

#91
20050234141
2005-10-20

Method of making thermally regenerable salt sorbent resins

#92
20050181378
2005-08-18

Polyelectrolyte-coated size-exclusion ion-exchange particles

#93
20050064192
2005-03-24

Column packing material

#94
15793613
2023-12-26

Double charge composite materials for contaminant removal and methods of making the same

#95
14918722
2016-11-01

Cross-linked copolymers and methods thereof