ClassID:

30315

B01D2252/20421 - CPC Classification

Classification description:

Absorbents, i.e. solvents and liquid materials for gas absorption; Organic absorbents; Amines Primary amines

Recent Application in this class:
#1
20260131278
2026-05-14

Low-Energy CO2 Capture and Separation

#2
20260115687
2026-04-30

ATMOSPHERIC CARBON DIOXIDE SORBENT

#3
20260108846
2026-04-23

METHOD AND SYSTEM FOR CARBON CAPTURE AND UTILIZATION

#4
20260091345
2026-04-02

Methods And Compositions for Carbon Capture

#5
20260061361
2026-03-05

COMBUSTOR

#6
20260008765
2026-01-08

METHOD FOR PREPARING AND SEPARATING ALKYLENE CARBONATE USING CARBON DIOXIDE IN AIR

#7
20250339815
2025-11-06

CO2 SORPTION WITH OXIDATION RESISTANT AMINES

#8
20250288947
2025-09-18

METHOD FOR PRODUCING ACIDIC GAS ABSORBENT AND ACIDIC GAS ABSORBENT PRODUCED BY THE METHOD

#9
20250256237
2025-08-14

PROCESS FOR REGENERATING A LIQUID ABSORBENT

#10
20250145472
2025-05-08

METHOD FOR GENERATING CARBON DIOXIDE

#11
20250058270
2025-02-20

INTEGRATED ROTATING PACKED BED ADSORBER, COOLER, AND AMINE ENTRAINMENT UNIT

#12
20250025831
2025-01-23

SYSTEM AND PROCESS OF CAPTURING CARBON DIOXIDE FROM FLUE GASES

#13
20250025829
2025-01-23

Carbon Capture

#14
20250018327
2025-01-16

CO2 CAPTURE AND DESORPTION USING CORE-SHELL CATALYSTS

#15
20250002379
2025-01-02

SYSTEMS AND METHODS FOR TREATING CONTAMINATED WATER AS A SOURCE FOR HYDROGEN

#16
20240424428
2024-12-26

METHOD AND SYSTEM FOR TREATMENT OF LIQUID MATERIAL TO RECOVER A GASEOUS EFFLUENT

#17
20240399294
2024-12-05

CARBON DIOXIDE ABSORBENT COMPOSITION AND METHOD FOR CAPTURING CARBON DIOXIDE USING THE SAME

#18
20240399290
2024-12-05

Gas Capture System Comprising a Heat Pump Using a Liquid Sorbent With Combined Temperature and Pressure Swings

#19
20240382898
2024-11-21

PROCESS AND SYSTEM FOR CAPTURE OF CARBON DIOXIDE

#20
20240367094
2024-11-07

PROCESS FOR PRODUCING A MATERIAL FOR ABSORBING CARBON DIOXIDE FROM ATMOSPHERIC AIR, MATERIAL FOR ABSORBING CARBON DIOXIDE FROM ATMOSPHERIC AIR, APPARATUS, MOTOR VEHICLE

#21
20240350966
2024-10-24

Method For Recovery of Chemically Absorbed CO2 With Low Energy Consumption

#22
20240342649
2024-10-17

SEAWATER ELECTROLYSIS ENABLES SCALABLE ATMOSPHERIC CO2 MINERALIZATION

#23
20240325976
2024-10-03

Electrochemical Metal Removal

#24
20240325965
2024-10-03

DIRECT AIR CAPTURE OF CARBON DIOXIDE

#25
20240216894
2024-07-04

COMPOSITE CATALYST FOR CARBON DIOXIDE ABSORBENT REGENERATION

#26
20240207777
2024-06-27

DIGLYCOLAMINE PROCESSING FOLLOWING ACID GAS REMOVAL FROM A GAS STREAM

#27
20240198287
2024-06-20

CARBON DIOXIDE RECOVERING METHOD AND CARBON DIOXIDE RECOVERING DEVICE

#28
20240100473
2024-03-28

CARBON DIOXIDE ABSORBER

#29
20240042376
2024-02-08

Water-lean carbon dioxide absorbent and method for capturing carbon dioxide by using same

#30
20240017205
2024-01-18

TWO STEP AMINE ABSORPTION PROCESS FOR REMOVAL CO2/H2S FROM BIOGAS

#31
20230330596
2023-10-19

System and process of capturing carbon dioxide from flue gases

#32
20230321589
2023-10-12

AQUEOUS CO2 ABSORBENT COMPRISING 2-AMINO-2-METHYL-1-PROPANOL AND 3-AMINOPROPANOL OR 2-AMINO-2-METHYL-1-PROPANOL AND 4-AMINOBUTANOL

#33
20230302397
2023-09-28

Dual-Loop Solution-Based Carbon Capture System and Method

#34
20230285891
2023-09-14

LOW-COST AND HIGH-EFFICIENCY ABSORPTION-DESORPTION DECOUPLING METHOD FOR CONTAMINANT-CO2 SYNERGISTIC CAPTURE

#35
20230256381
2023-08-17

Process and system for capture of carbon dioxide

#36
20230149850
2023-05-18

Process for regenerating a liquid absorbent

#37
20230137305
2023-05-04

Porous Liquid, Self-Replenishing Porous Liquid And Methods Of Making And Using The Same

#38
20230078337
2023-03-16

Methods And Compositions for Carbon Capture

#39
20220387926
2022-12-08

COMPOSITIONS AND METHODS FOR CARBON DIOXIDE CAPTURE

#40
20220379258
2022-12-01

LOW ENERGY CONSUMPTION ANHYDROUS CO2 PHASE CHANGE ABSORPTION AGENT, AND REGENERATION METHOD AND APPLICATION THEREOF

#41
20220355245
2022-11-10

Formic acid formation from a carbon dioxide source

#42
20220233997
2022-07-28

Highly efficient COabsorbent composition and method for preparing the same

#43
20220226769
2022-07-21

GAS TREATMENT METHOD, AND GAS TREATMENT DEVICE

#44
20220161224
2022-05-26

Acid gas absorbent in biogas and biogas purification system using the same

#45
20220051756
2022-02-17

MODELLING OF OPERATING AND/OR DIMENSIONING PARAMETERS OF A GAS TREATMENT PLANT

#46
20220001325
2022-01-06

Process for regenerating a liquid absorbent

#47
20210402368
2021-12-30

Hydrogen sulfide adsorbent in biogas and biogas purification system using the same

#48
20210362090
2021-11-25

Process and system for capture of carbon dioxide

#49
20210322923
2021-10-21

System and process of capturing carbon dioxide from flue gases

#50
20210215420
2021-07-15

HEAVY HYDROCARBON REMOVAL FROM LEAN GAS TO LNG LIQUEFACTION

#51
20210095381
2021-04-01

CARBON DIOXIDE REDUCTION SYSTEM AND CARBON DIOXIDE REDUCTION METHOD

#52
20210069638
2021-03-11

Gas purification using a co-axial co-current contactor

#53
20210031138
2021-02-04

Absorbent liquid for CO2 and/or H2S, and apparatus and method using same

#54
20210023503
2021-01-28

PORTABLE CARBON DIOXIDE ABSORPTION SYSTEM

#55
20210016226
2021-01-21

Gas treatment method and gas treatment apparatus

#56
20210016222
2021-01-21

FOULING MITIGATION IN ALKANOLAMINE TREATING SYSTEMS

#57
20200368675
2020-11-26

LOW ENERGY CONSUMPTION ANHYDROUS CO2 PHASE CHANGE ABSORPTION AGENT, AND REGENERATION METHOD AND APPLICATION THEREOF

#58
20200277186
2020-09-03

Thermal stage and reduction absorption sulfur recovery process

#59
20200197864
2020-06-25

Method for Scavenging Airborne Formaldehyde

#60
20200147545
2020-05-14

Porous liquid and methods of making and using the same

#61
20200108343
2020-04-09

Absorbent compositions including amino-siloxanes

#62
20200086267
2020-03-19

AQUEOUS CO2 ABSORBENT COMPRISING 2-AMINO-2-METHYL-1-PROPANOL AND 3-AMINOPROPANOL OR 2-AMINO-2-METHYL-1-PROPANOL AND 4-AMINOBUTANOL

#63
20200047110
2020-02-13

Acidic gas absorbent, acidic gas removal method and acidic gas removal apparatus

#64
20190329176
2019-10-31

Compositions and methods for carbon dioxide capture

#65
20190321773
2019-10-24

Methods and systems for improving the energy efficiency of carbon dioxide capture

#66
20190308135
2019-10-10

Portable carbon dioxide absorption system

#67
20190291044
2019-09-26

Process and system for capture of carbon dioxide

#68
20190232247
2019-08-01

Composite 3D-printed reactors for gas absorption, purification, and reaction

#69
20190193025
2019-06-27

Acid component removal device, acid component removal method, and acid gas removal device

#70
20190151794
2019-05-23

Composite amine absorbing solution, and device and method for removing CO2 or H2S or both

#71
20190060779
2019-02-28

Systems and methods for enhancing amine agent recovery with a reclaimer

#72
20190039013
2019-02-07

Method for separating C5-C8 hydrocarbons and acid gases from a fluid stream

#73
20190027771
2019-01-24

ACID GAS REGENERABLE BATTERY

#74
20190010118
2019-01-10

Guanidine compounds for removal of oxyanions from aqueous solutions and for carbon dioxide capture

#75
20190001261
2019-01-03

CO2 RECOVERY DEVICE AND CO2 RECOVERY METHOD

#76
20180369750
2018-12-27

Portable carbon dioxide absorption system

#77
20180353896
2018-12-13

Methods and systems for improving the energy efficiency of carbon dioxide capture

#78
20180339265
2018-11-29

SYSTEM FOR TIME-SHIFTING POST-COMBUSTION CO2 CAPTURE

#79
20180318755
2018-11-08

Separation of a target substance from a fluid or mixture using encapsulated sorbents

#80
20180318753
2018-11-08

Apparatus and method for absorbing a component from a gas mixture using rotating packed bed unit

#81
20180311610
2018-11-01

Gas treatment method and gas treatment device

#82
20180280871
2018-10-04

Intensification of biocatalytic gas absorption

#83
20180280867
2018-10-04

Absorbent liquid for COand/or HS, and apparatus and method using same

#84
20180272268
2018-09-27

Composite 3D-printed reactors for gas absorption, purification, and reaction

#85
20180257023
2018-09-13

Carbon dioxide absorbent

#86
20180223204
2018-08-09

Gas separation by vaporized compound

#87
20180222847
2018-08-09

Diamine having tert-alkylamino group and primary amino group for use in gas scrubbing

#88
20180221818
2018-08-09

COcapture methods using carbonic anhydrase

#89
20180148331
2018-05-31

Apparatus and combined process for carbon dioxide gas separation

#90
20180105754
2018-04-19

Electrolyzed water-amine compositions and methods of use

#91
20180099248
2018-04-12

Carbon dioxide recovery using an absorption column in combination with osmotic filters

#92
20180043300
2018-02-15

Moisture removal from wet gases

#93
20180017319
2018-01-18

Heavy hydrocarbon removal from lean gas to LNG liquefaction

#94
20180002240
2018-01-04

Sustainable supply of recipe components for ceramic composites produced by hydrothermal liquid phase sintering

#95
20180001259
2018-01-04

Method and system for treatment of a gas stream that contains carbon dioxide

#96
20170312680
2017-11-02

Systems and methods for COremoval from flue gas by temperature swing absorption

#97
20170266607
2017-09-21

CARBONIC ACID GAS ABSORBING MATERIAL, CARBONIC ACID GAS RECOVERY SYSTEM, AND CARBONIC ACID GAS RECOVERY METHOD

#98
20170252695
2017-09-07

Regenerable solvent mixtures for acid-gas separation

#99
20170232380
2017-08-17

Method of development and use of catalyst-functionalized catalytic particles to increase the mass transfer rate of solvents used in acid gas cleanup

#100
20170216763
2017-08-03

COmass transfer enhancement of aqueous amine solvents by particle additives

#101
20170209846
2017-07-27

Methods and systems for carrying out a pH-influenced chemical and/or biological reaction

#102
20170209832
2017-07-27

System and method for carbon dioxide capture and sequestration from relatively high concentration COmixtures

#103
20170197175
2017-07-13

Energy-efficient extraction of acid gas from flue gases

#104
20170183996
2017-06-29

Gas separation process using membranes with permeate sweep to remove COfrom combustion exhaust

#105
20170173527
2017-06-22

THERMAL STAGE AND REDUCTION ABSORPTION SULFUR RECOVERY PROCESS

#106
20170173522
2017-06-22

Carbon dioxide separation and capture apparatus and method of controlling operation of carbon dioxide separation and capture apparatus

#107
20170145125
2017-05-25

Component separations in polymerization

#108
20170136406
2017-05-18

Absorber

#109
20170106331
2017-04-20

Absorbent system and method for capturing CO from a gas stream

#110
20170081603
2017-03-23

Gas separation by vaporized compound

#111
20170056817
2017-03-02

GAS DESORPTION

#112
20170050141
2017-02-23

Apparatus for removing an acid gas from a gas stream

#113
20170050140
2017-02-23

Water control in non-aqueous acid gas recovery systems

#114
20170036192
2017-02-09

Method for regenerating a used sorbent having a gas adsorbate adsorbed thereto

#115
20170021305
2017-01-26

Aqueous absorbent composition for enhanced removal of hydrogen sulfide from gaseous mixtures and method for using the same

#116
20160375400
2016-12-29

Liquid carbon dioxide absorbents, methods of using the same, and related systems

#117
20160375399
2016-12-29

CARBON DIOXIDE ABSORBENT AND METHOD FOR REGENERATING CARBON DIOXIDE ABSORBENT

#118
20160361683
2016-12-15

Method of increasing mass transfer rate of acid gas scrubbing solvents

#119
20160346734
2016-12-01

Compounds for the capture of carbon dioxide from gaseous mixtures and subsequent release, related process and plant

#120
20160297729
2016-10-13

Ethylene recovery by absorption

#121
20160220947
2016-08-04

COMPOSITE AMINE ABSORBENT, AND APPARATUS AND METHOD FOR REMOVING CO2 AND/OR H2S

#122
20160207854
2016-07-21

Use of diethylenetriamine as a CS2 scavenger in isoprene production

#123
20160193560
2016-07-07

Optimization of stripper feed configuration for rich/lean solvent regeneration

#124
20160158690
2016-06-09

Reversible light driven gas absorbent solution and process

#125
20160152745
2016-06-02

Component separations in polymerization

#126
20160114290
2016-04-28

Methods and systems for carrying out a pH-influenced chemical and/or biological reaction

#127
20160101385
2016-04-14

Carbon dioxide absorbent and method for absorbing and desorbing carbon dioxide

#128
20160059180
2016-03-03

Liquid, slurry and flowable powder adsorption/absorption method utilizing waste heat for on-board recovery and storage of COfrom motor vehicle internal combustion engine exhaust gases

#129
20160059178
2016-03-03

System and method for desorption of acid gas from an absorption liquid

#130
20160045857
2016-02-18

Method and Device for Separating Acid Gases from a Gas Mixture

#131
20160038872
2016-02-11

Non-aqueous amine scrubbing for removal of carbon dioxide

#132
20160023966
2016-01-28

Ethylene recovery by absorption

#133
20160016111
2016-01-21

Systems and methods for COremoval from flue gas by temperature swing absorption

#134
20160008755
2016-01-14

Method and device for the treatment of a gas stream, in particular for the treatment of a natural gas stream

#135
20150367281
2015-12-24

ABSORBENT SOLUTION FOR ABSORPTION OF ACID GAS AND PROCESS FOR ABSORPTION OF ACID GAS

#136
20150353454
2015-12-10

Method or system for recovering carbon dioxide

#137
20150352482
2015-12-10

Method for treating sulphur-containing exhaust gases and device thereof

#138
20150306538
2015-10-29

AN AQUEOUS CO2 ABSORBENT COMPRISING 2-AMINO-2-METHYL-1-PROPANOL AND 3-AMINOPROPANOL OR 2-AMINO-2-METHYL-1-PROPANOL AND 4-AMINOBUTANOL

#139
20150267027
2015-09-24

Component separations in polymerization

#140
20150196875
2015-07-16

Method of increasing mass transfer rate of acid gas scrubbing solvents

#141
20150137393
2015-05-21

Gas separation device and packing

#142
20150132207
2015-05-14

Complex amine absorbent, and device and method for removing one or both of COand HS

#143
20150110694
2015-04-23

Methods and systems for carrying out a pH-influenced chemical and/or biological reaction

#144
20150083425
2015-03-26

Inline non-targeted component removal

#145
20150073150
2015-03-12

Blends of amines with piperazine for COcapture

#146
20150004082
2015-01-01

System and method for treatment of a medium

#147
20140367612
2014-12-18

Organic amine decarbonization solutions

#148
20140352532
2014-12-04

Continuously stirred tank reactor absorber and flash tank stripper system

#149
20140335589
2014-11-13

Separation of a target substance from a fluid or mixture using encapsulated sorbents

#150
20140296061
2014-10-02

Catalysts and methods of increasing mass transfer rate of acid gas scrubbing solvents

#151
20140294704
2014-10-02

Solvent and method for removal of an acid gas from a fluid stream

#152
20140131902
2014-05-15

Gas separation apparatus and packing

#153
20140094360
2014-04-03

Reactive extraction process for regeneration of amine-based solvents used for carbon dioxide capture

#154
20140056687
2014-02-27

Integrated method of driving a COcompressor of a CO-capture system using waste heat from an internal combustion engine on board a mobile source

#155
20130327983
2013-12-12

Acid gas scrubbing composition

#156
20130296615
2013-11-07

Multi-pollutant abatement device and method

#157
20130164200
2013-06-27

Regenerable solvent mixtures for acid-gas separation

#158
20130164199
2013-06-27

Regenerable solvent mixtures for acid-gas separation

#159
20130108532
2013-05-02

Catalytic method and apparatus for separating a gaseous component from an incoming gas stream

#160
20130058857
2013-03-07

Methods and systems for carrying out a pH-influenced chemical and/or biological reaction

#161
20130055895
2013-03-07

REMOVAL OF CO2 FROM GASES OF LOW CO2 PARTIAL PRESSURES BY MEANS OF 1,2 DIAMINOPROPANE

#162
20130019530
2013-01-24

Method and an apparatus for sweetening and dehydrating a hydrocarbon gas, in particular a natural gas

#163
20130000301
2013-01-03

Low pressure steam pre-heaters for gas purification systems and processes of use

#164
20120321538
2012-12-20

Gas separation by vaporized compound

#165
20120308469
2012-12-06

Carbon dioxide-absorbing solution and method of recovering carbon dioxide

#166
20120308452
2012-12-06

Absorbent solution containing a breakdown inhibitor derived from thiazole or from oxazole and absorption process for acid compounds contained in a gaseous effluent

#167
20120294785
2012-11-22

Acidic gas absorbent, acidic gas removal device, and acidic gas removal method

#168
20120292565
2012-11-22

Absorbent solution containing a breakdown inhibitor derived from pyrimidine or from triazine and absorption process for acid compounds contained in a gaseous effluent

#169
20120238006
2012-09-20

Process for removal of carbon dioxide from a gas stream

#170
20120232232
2012-09-13

Ethylene recovery by absorption

#171
20120232231
2012-09-13

Component separations in polymerization

#172
20120222426
2012-09-06

INTEGRATED GAS TURBINE, SAGD BOILER AND CARBON CAPTURE

#173
20120214219
2012-08-23

Separation of a target substance from a fluid or mixture using encapsulated sorbents

#174
20120174783
2012-07-12

Method and system for removal of gaseous contaminants

#175
20120171095
2012-07-05

Liquid carbon dioxide absorbents, methods of using the same, and related systems

#176
20120152120
2012-06-21

PRODUCTION OF CARBON DIOXIDE FROM SYNTHESIS GAS

#177
20120145001
2012-06-14

Process for reducing contaminants in an industrial fluid stream

#178
20120095181
2012-04-19

Ethylene separation

#179
20120088292
2012-04-12

Methods and formulations using carbonic anhydrase and reaction compound combinations

#180
20120070353
2012-03-22

Process For Separating Off Acidic Gases By Means Of Metal-Organic Frameworks Impregnated With Amines

#181
20120063980
2012-03-15

Alkanolamine COscrubbing process

#182
20120063979
2012-03-15

High COto amine adsorption capacity COscrubbing processes

#183
20120063978
2012-03-15

Ionic liquids as amine promoter solvents for removal of carbon dioxide

#184
20120063977
2012-03-15

Ionic liquids for removal of carbon dioxide

#185
20120061614
2012-03-15

Non-aqueous amine scrubbing for removal of carbon dioxide

#186
20120060686
2012-03-15

Mixed amine and non-nucleophilic base CO2 scrubbing process for improved adsorption at increased temperatures

#187
20120009114
2012-01-12

Gas pressurized separation column and process to generate a high pressure product gas

#188
20110256043
2011-10-20

Composition for treating acid gas

#189
20110217218
2011-09-08

Systems and Methods for Acid Gas Removal

#190
20110192215
2011-08-11

Analytical System for In-Line Analysis of Post-Combustion Capture Solvents

#191
20110189750
2011-08-04

Carbonic anhydrase enhanced reaction methods and formulations

#192
20110179948
2011-07-28

Application of amine-tethered solid sorbents to CO2 fixation from air

#193
20110171091
2011-07-14

Method for UV photolytic separation of pollutant gases from an emission stream

#194
20110150730
2011-06-23

Carbon dioxide sorbents

#195
20110107916
2011-05-12

System for recovering carbon dioxide from flue gas

#196
20100329953
2010-12-30

Acid gas scrubbing composition

#197
20100326276
2010-12-30

Acid gas scrubbing composition

#198
20100229723
2010-09-16

Method and absorbent composition for recovering a gaseous component from a gas stream

#199
20100203619
2010-08-12

COabsorption solution

#200
20100154639
2010-06-24

LIQUID CARBON DIOXIDE ABSORBENT AND METHODS OF USING THE SAME

#201
20100154431
2010-06-24

LIQUID CARBON DIOXIDE ABSORBENT AND METHODS OF USING THE SAME

#202
20100105551
2010-04-29

Absorbents for separating acidic gases

#203
20100095851
2010-04-22

METHODS AND SYSTEMS FOR DEACIDIZING GASEOUS MIXTURES

#204
20090205496
2009-08-20

Method for inhibiting amine degradation during COcapture from a gas stream

#205
20080148939
2008-06-26

COabsorption solution

#206
20080078292
2008-04-03

Absorbing solution, method and device for absorbing COor HS or both

#207
18770527
2024-10-22

Modular membrane isolation carbon desorption device, carbon capture system, method and application

#208
16135494
2020-02-18

Method of Determination of Operating and/or Dimensioning Parameters of A Gas Treatment Plant