Patents-Review.com
ClassID:

30322 ⎘

B01D2252/20457 - CPC Classification

Classification description:

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

Recent Application in this class:
#1
20250256237
2025-08-14

PROCESS FOR REGENERATING A LIQUID ABSORBENT

 #2
20240382898
2024-11-21

PROCESS AND SYSTEM FOR CAPTURE OF CARBON DIOXIDE

 #3
20230256381
2023-08-17

Process and system for capture of carbon dioxide

 #4
20230149850
2023-05-18

Process for regenerating a liquid absorbent

 #5
20220001325
2022-01-06

Process for regenerating a liquid absorbent

 #6
20210362090
2021-11-25

Process and system for capture of carbon dioxide

 #7
20190374905
2019-12-12

CAPTURE AND RELEASE OF ACID GASSES USING TUNABLE ORGANIC SOLVENTS WITH AMINOPYRIDINE

 #8
20190374904
2019-12-12

Capture and release of acid gasses using tunable organic solvents with aminopyridine

 #9
20190374903
2019-12-12

Capture and release of acid gasses using tunable organic solvents with aminopyridine

 #10
20190291044
2019-09-26

Process and system for capture of carbon dioxide

 #11
20190039014
2019-02-07

Capture and release of acid gasses using tunable organic solvents with aminopyridine

 #12
20190010118
2019-01-10

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

 #13
20190001256
2019-01-03

Processes for gas separation by solvent or absorbent

 #14
20170203250
2017-07-20

Capture and release of acid gasses using tunable organic solvents with aminopyridine

 #15
20160263519
2016-09-15

Process for capturing sulfur dioxide from a gas stream

 #16
20140335003
2014-11-13

Carbon dioxide recovery system and operating method thereof

 #17
20140234191
2014-08-21

Aminopyridine derivatives for removal of hydrogen sulfide from a gas mixture

 #18
20140154161
2014-06-05

Method and apparatus for hydrogen sulphide removal

 #19
20120297978
2012-11-29

Gas prepurification process

 #20
20120294785
2012-11-22

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