Patents-Review.com
ClassID:

30319 ⎘

B01D2252/20442 - CPC Classification

Classification description:

Absorbents, i.e. solvents and liquid materials for gas absorption; Organic absorbents; Amines; Cyclic amines containing a piperidine-ring

Recent Application in this class:
#1
20260108843
2026-04-23

CARBON DIOXIDE ABSORBENT CONTAINING IONIC MATERIAL CONTAINING CYCLIC AMMONIUM CATION AND HYDROXIDE ANION, AND CARBON DIOXIDE SEPARATION METHOD USING THE SAME

 #2
20260001056
2026-01-01

CARBON DIOXIDE ABSORBENT CONTAINING IONIC MATERIAL CONTAINING SPIRO AMMONIUM CATION AND HYDROXIDE ANION, AND CARBON DIOXIDE SEPARATION METHOD USING THE SAME

 #3
20250161867
2025-05-22

SOLVENT SYSTEMS FOR CARBON DIOXIDE CAPTURE AND METHODS OF MAKING AND USING SAID SYSTEMS

 #4
20250083096
2025-03-13

Carbon Dioxide Absorbing Composition, Method of Absorbing Carbon Dioxide and Method of Separating Carbon Dioxide Using the Same

 #5
20220387926
2022-12-08

COMPOSITIONS AND METHODS FOR CARBON DIOXIDE CAPTURE

 #6
20210308619
2021-10-07

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

 #7
20200376428
2020-12-03

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

 #8
20200255958
2020-08-13

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

 #9
20200030739
2020-01-30

Cyclic amine for selectively removing hydrogen sulphide

 #10
20190358579
2019-11-28

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

 #11
20190329176
2019-10-31

Compositions and methods for carbon dioxide capture

 #12
20190160422
2019-05-30

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

 #13
20190027771
2019-01-24

ACID GAS REGENERABLE BATTERY

 #14
20190001256
2019-01-03

Processes for gas separation by solvent or absorbent

 #15
20180345207
2018-12-06

Guanidine compounds for carbon dioxide capture

 #16
20180326348
2018-11-15

METHODS AND APPARATUSES FOR GAS SEPARATION BY SOLVENT OR ABSORBENT

 #17
20180272271
2018-09-27

Cyclic amine for selectively removing hydrogen sulphide

 #18
20180223204
2018-08-09

Gas separation by vaporized compound

 #19
20180222847
2018-08-09

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

 #20
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

 #21
20170081603
2017-03-23

Gas separation by vaporized compound

 #22
20160361683
2016-12-15

Method of increasing mass transfer rate of acid gas scrubbing solvents

 #23
20160325225
2016-11-10

Methods and apparatuses for recovering CO

 #24
20160220947
2016-08-04

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

 #25
20160158690
2016-06-09

Reversible light driven gas absorbent solution and process

 #26
20160045857
2016-02-18

Method and Device for Separating Acid Gases from a Gas Mixture

 #27
20150125373
2015-05-07

Method for absorbing COfrom a gas mixture

 #28
20150118136
2015-04-30

Absorbent for desulfurization of combustion gas and method of treating combustion gas using the same

 #29
20140294705
2014-10-02

Method of increasing mass transfer rate of acid gas scrubbing solvents

 #30
20140127103
2014-05-08

Gas capture process

 #31
20130023712
2013-01-24

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

 #32
20120321538
2012-12-20

Gas separation by vaporized compound

 #33
20120308458
2012-12-06

COabsorption from gas mixtures using an aqueous solution of 4-amino-2,2,6,6-tetramethylpiperidine

 #34
20120238006
2012-09-20

Process for removal of carbon dioxide from a gas stream

 #35
20120161071
2012-06-28

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

 #36
20120128561
2012-05-24

Acid gas absorbent composition

 #37
20120017762
2012-01-26

COabsorption from gas mixtures using an aqueous solution of 4-amino-2,2,6,6-tetramethylpiperidine

 #38
20110232490
2011-09-29

Chemical compounds for the removal of carbon dioxide from gases

 #39
20110223087
2011-09-15

AMINO COMPOUNDS FOR CARBON DIOXIDE AND SULFUR DIOXIDE REMOVAL

 #40
20110214566
2011-09-08

CARBON DIOXIDE ABSORBENTS

 #41
20110182799
2011-07-28

SEQUESTRATION OF A GAS EMITTED BY AN INDUSTRIAL PLANT

 #42
20110158873
2011-06-30

SEQUESTRATION OF A GAS EMITTED BY AN INDUSTRIAL PLANT

 #43
18883206
2025-06-10

Absorption medium and method for removing carbon dioxide from combustion exhaust gas