ClassID:

30314

B01D2252/20415 - CPC Classification

Classification description:

Absorbents, i.e. solvents and liquid materials for gas absorption; Organic absorbents; Amines Tri- or polyamines

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

Low-Energy CO2 Capture and Separation

#2
20260115649
2026-04-30

ACIDIC GAS-ABSORBING LIQUID AND ACIDIC GAS REDUCTION METHOD

#3
20250205639
2025-06-26

CARBON DIOXIDE SEPARATOR, AND METHOD FOR SEPARATING OR RECOVERING CARBON DIOXIDE

#4
20250145558
2025-05-08

SERINOL DERIVATIVES FOR CAPTURING ACID GASES AND METHODS OF MAKING AND USE THEREOF

#5
20250025831
2025-01-23

SYSTEM AND PROCESS OF CAPTURING CARBON DIOXIDE FROM FLUE GASES

#6
20240424446
2024-12-26

Method of Capturing a Target Species From a Gas

#7
20240342686
2024-10-17

COMPOSITE AMINE ABSORBENT, REMOVAL UNIT, AND REMOVAL METHOD

#8
20240009623
2024-01-11

Method of capturing a target species from a gas

#9
20230357658
2023-11-09

Method for removing acid compounds from a gaseous effluent using a tertiary amine-based absorbent solution

#10
20230330596
2023-10-19

System and process of capturing carbon dioxide from flue gases

#11
20230323031
2023-10-12

POLYMER COMPRISING A PLURALITY OF ACTIVE AMINE GROUPS, RELATED POLYMERS AND RELATED METHODS THEREOF

#12
20230321597
2023-10-12

Method and Scavenging Mixture for Removing Hydrogen Sulfide from a Gas Stream

#13
20230130161
2023-04-27

System and method to separate gases using high viscosity liquid sorbents in a spray contactor

#14
20230112681
2023-04-13

Stable immobilized amine sorbents for REE and heavy metal recovery from liquid sources

#15
20220387926
2022-12-08

COMPOSITIONS AND METHODS FOR CARBON DIOXIDE CAPTURE

#16
20220370952
2022-11-24

METHOD AND SYSTEM FOR FILTERING FORMALDEHYDE FROM INOOR AIR

#17
20220233997
2022-07-28

Highly efficient COabsorbent composition and method for preparing the same

#18
20220072472
2022-03-10

Solvent composition for COcapture and a process mediated thereof

#19
20220008864
2022-01-13

HS gas scrubbing and monitoring system for laboratory applications

#20
20210322923
2021-10-21

System and process of capturing carbon dioxide from flue gases

#21
20210308619
2021-10-07

Solvent and process for removing carbon dioxide from a gaseous mixture having high carbon dioxide partial pressures

#22
20210236984
2021-08-05

CARBON CAPTURE SOLVENTS HAVING ALCOHOLS AND AMINES AND METHODS FOR USING SUCH SOLVENTS

#23
20210138391
2021-05-13

Method and a system for the removal of carbon dioxide from solvents

#24
20210106944
2021-04-15

ABSORBENT COMPOSITIONS INCLUDING AMINO-SILOXANES

#25
20210039040
2021-02-11

Carbon dioxide absorbent and method for separating out carbon dioxide by using same

#26
20200255958
2020-08-13

Methods and systems for the electrochemical reduction of carbon dioxide using switchable polarity materials

#27
20200108343
2020-04-09

Absorbent compositions including amino-siloxanes

#28
20200047117
2020-02-13

Process for producing a purified gas stream

#29
20200047110
2020-02-13

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

#30
20190329176
2019-10-31

Compositions and methods for carbon dioxide capture

#31
20190314756
2019-10-17

METHOD AND SYSTEM FOR FILTERING FORMALDEHYDE FROM INOOR AIR

#32
20190010118
2019-01-10

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

#33
20190002768
2019-01-03

Nitrogen based hydrogen sulfide scavengers and method of use thereof

#34
20180369743
2018-12-27

Polyamines, synthesis process thereof and use of same for the selective elimination of HS from a gaseous effluent comprising CO

#35
20180345207
2018-12-06

Guanidine compounds for carbon dioxide capture

#36
20180311611
2018-11-01

Absorbent for the selective removal of hydrogen sulfide

#37
20180311610
2018-11-01

Gas treatment method and gas treatment device

#38
20180100065
2018-04-12

STABLE IMMOBILIZED AMINE SORBENTS FOR REE AND HEAVY METAL RECOVERY FROM LIQUID SOURCES

#39
20180044598
2018-02-15

Method of reducing hydrogen sulfide levels in gaseous mixtures using triazines

#40
20180043300
2018-02-15

Moisture removal from wet gases

#41
20170312680
2017-11-02

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

#42
20170274317
2017-09-28

Carbon capture solvents having alcohols and amines and methods for using such solvents

#43
20170246587
2017-08-31

Carbon dioxide absorbent comprising triamine

#44
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

#45
20160375400
2016-12-29

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

#46
20160325225
2016-11-10

Methods and apparatuses for recovering CO

#47
20160263519
2016-09-15

Process for capturing sulfur dioxide from a gas stream

#48
20160244467
2016-08-25

Amino-siloxane composition and methods of using the same

#49
20160207854
2016-07-21

Use of diethylenetriamine as a CS2 scavenger in isoprene production

#50
20160045857
2016-02-18

Method and Device for Separating Acid Gases from a Gas Mixture

#51
20160038872
2016-02-11

Non-aqueous amine scrubbing for removal of carbon dioxide

#52
20160016111
2016-01-21

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

#53
20160001220
2016-01-07

LIQUID FOR ABSORBING AND COLLECTING CARBON DIOXIDE IN GAS, AND METHOD FOR COLLECTING CARBON DIOXIDE WITH USE OF SAME

#54
20150353454
2015-12-10

Method or system for recovering carbon dioxide

#55
20150321167
2015-11-12

Method for preparing solid amine gas adsorption material

#56
20150182907
2015-07-02

CARBON DIOXIDE ABSORBING AGENT, CARBON DIOXIDE CAPTURE SYSTEM AND METHOD OF SLOWING THE DEGRADATION OF THE CARBON DIOXIDE ABSORBING AGENT

#57
20150104366
2015-04-16

Amino-siloxane composition and methods of using the same

#58
20150073150
2015-03-12

Blends of amines with piperazine for COcapture

#59
20140234191
2014-08-21

Aminopyridine derivatives for removal of hydrogen sulfide from a gas mixture

#60
20140154161
2014-06-05

Method and apparatus for hydrogen sulphide removal

#61
20140127105
2014-05-08

Carbon dioxide absorbent and method of using the same

#62
20140096684
2014-04-10

Carbon dioxide separating and capturing apparatus

#63
20130327983
2013-12-12

Acid gas scrubbing composition

#64
20130045154
2013-02-21

PROCESS FOR CAPTURE OF CARBON DIOXIDE

#65
20130023712
2013-01-24

METHOD OF REMOVING ACID COMPOUNDS FROM A GASEOUS EFFLUENT WITH AN ABSORBENT SOLUTION BASED ON I/II/III TRIAMINES

#66
20130008800
2013-01-10

Carbon dioxide capture and conversion to organic products

#67
20120282160
2012-11-08

CARBON DIOXIDE AND HYDROGEN SULFIDE ABSORBENTS AND PROCESS FOR THEIR USE

#68
20120251421
2012-10-04

PROCESSES FOR REDUCING NITROSAMINE FORMATION DURING GAS PURIFICATION IN AMINE BASED LIQUID ABSORPTION SYSTEMS

#69
20120171095
2012-07-05

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

#70
20120145001
2012-06-14

Process for reducing contaminants in an industrial fluid stream

#71
20120063980
2012-03-15

Alkanolamine COscrubbing process

#72
20120063979
2012-03-15

High COto amine adsorption capacity COscrubbing processes

#73
20120063978
2012-03-15

Ionic liquids as amine promoter solvents for removal of carbon dioxide

#74
20120063977
2012-03-15

Ionic liquids for removal of carbon dioxide

#75
20120061614
2012-03-15

Non-aqueous amine scrubbing for removal of carbon dioxide

#76
20120060686
2012-03-15

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

#77
20110308390
2011-12-22

Carbon dioxide absorbent and method of using the same

#78
20110256043
2011-10-20

Composition for treating acid gas

#79
20110223087
2011-09-15

AMINO COMPOUNDS FOR CARBON DIOXIDE AND SULFUR DIOXIDE REMOVAL

#80
20110217218
2011-09-08

Systems and Methods for Acid Gas Removal

#81
20110182799
2011-07-28

SEQUESTRATION OF A GAS EMITTED BY AN INDUSTRIAL PLANT

#82
20110165047
2011-07-07

Sulfide scavenging processes

#83
20110158873
2011-06-30

SEQUESTRATION OF A GAS EMITTED BY AN INDUSTRIAL PLANT

#84
20110150730
2011-06-23

Carbon dioxide sorbents

#85
20100329953
2010-12-30

Acid gas scrubbing composition

#86
20100326276
2010-12-30

Acid gas scrubbing composition

#87
20100154639
2010-06-24

LIQUID CARBON DIOXIDE ABSORBENT AND METHODS OF USING THE SAME

#88
20080159937
2008-07-03

Process for the recovery of carbon dioxide from a gas stream