ClassID:

29706

B01D53/54 - CPC Classification

Classification description:

Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,; Chemical or biological purification of waste gases; Removing components of defined structure Nitrogen compounds

Sub-classes:
Recent Application in this class:
#1
20260077310
2026-03-19

BACTERIAL COMPOSITIONS FOR CONSUMING METHANE AND FIXING NITROGEN

#2
20260061360
2026-03-05

CARBON CAPTURE SYSTEM FOR PRODUCTION OF SODA ASH, BAKING SODA, METHANOL, & FORMALDEHYDE

#3
20250367600
2025-12-04

Processes to Clean Tail Gas from Carbon Black Production and System and Facility for Same

#4
20250296043
2025-09-25

GREENHOUSE GAS ABATEMENT

#5
20250281876
2025-09-11

DECONTAMINATING MATERIALS AND METHODS OF MAKING AND USING SAME

#6
20250270151
2025-08-28

FUEL PROCESS AND PLANT

#7
20250235815
2025-07-24

WET PROCESS AIR ABATEMENT SYSTEM AND METHOD

#8
20250229224
2025-07-17

PROCESS FOR REDUCING FOSSIL CO2 EMISSIONS

#9
20250083091
2025-03-13

System and Method for Concentrating Gas

#10
20240053002
2024-02-15

Building Emission Processing and/or Sequestration Systems and Methods

#11
20230373874
2023-11-23

PLANT AND PROCESS OF GRANULATING UREA AMMONIA SULPHATE

#12
20230277974
2023-09-07

Noble gas recovery system

#13
20230175686
2023-06-08

Systems and Methods for Isolating Substantially Pure Carbon Dioxide from Flue Gas

#14
20220370954
2022-11-24

ELECTROCHEMICAL CELL, METHOD AND APPARATUS FOR CAPTURING CARBON DIOXIDE FROM FLUE GAS AND DECOMPOSING NITROSAMINE COMPOUNDS

#15
20220305428
2022-09-29

System and method for concentrating gas

#16
20220274058
2022-09-01

Purification composition, method for producing purification composition and method for purifying flue gas by purification composition

#17
20220089529
2022-03-24

Urea production with multiple evaporators

#18
20220088532
2022-03-24

Air separators and related methods

#19
20220032227
2022-02-03

NOBLE GAS RECOVERY SYSTEM

#20
20220017374
2022-01-20

Alkali metal cyanide production

#21
20210394117
2021-12-23

METHOD AND APPARATUS FOR TREATING DISCHARGE GAS CONTAINING TARGET GAS IN PLASMA STATE

#22
20210016221
2021-01-21

Air separators and related methods

#23
20200340665
2020-10-29

Building Emission Processing and/or Sequestration Systems and Methods

#24
20190329076
2019-10-31

Oxygen concentrating self-rescuer device

#25
20190321780
2019-10-24

Multi-stage membrane for N2 rejection

#26
20190299122
2019-10-03

Quench column aftercooler

#27
20190022577
2019-01-24

Plasma abatement of compounds containing heavy atoms

#28
20180354795
2018-12-13

Neon recovering/purifying system and neon recovering/purifying method

#29
20180326353
2018-11-15

Emissions reduction for CO2 capture

#30
20180318758
2018-11-08

Plasma abatement of compounds containing heavy atoms

#31
20180312766
2018-11-01

System for the treatment of a contaminated hydrocarbon streams

#32
20180312765
2018-11-01

System for the treatment of mercaptan contaminated hydrocarbon streams

#33
20180245005
2018-08-30

Method for removing amine from a contaminated hydrocarbon streams

#34
20170348682
2017-12-07

Method for the conversion of nitrous acid to dinitrogen gas

#35
20170320010
2017-11-09

Plasma exhaust purification

#36
20170312685
2017-11-02

Processes for filtering chemicals from air streams

#37
20170216767
2017-08-03

PLASMA ABATEMENT OF COMPOUNDS CONTAINING HEAVY ATOMS

#38
20170182475
2017-06-29

Sulfonic acid-containing polymeric materials as amine sorbents

#39
20170137330
2017-05-18

Removal of urea and ammonia from exhaust gases

#40
20170120085
2017-05-04

Oxygen concentrating self-rescuer device

#41
20170113013
2017-04-27

Connection of a spontaneous delivery device to a concentrator

#42
20170029344
2017-02-02

DEVICE AND METHOD FOR PRODUCING FERTILIZER FROM THE EXHAUST GASES OF A PRODUCTION SYSTEM

#43
20160346724
2016-12-01

Adsorbed natural gas storage facility

#44
20160340525
2016-11-24

Coating compositions for removing free formaldehyde from the environment

#45
20160236146
2016-08-18

Catalytic adsorbents obtained from municipal sludges, industrial sludges, compost and tobacco waste and process for their production

#46
20160220953
2016-08-04

Method of detoxifying exhaust pipe and film forming apparatus

#47
20160184774
2016-06-30

Flue-gas purification and reclamation system and method thereof

#48
20160166984
2016-06-16

System and method for treatment of a flue gas

#49
20150367283
2015-12-24

Emissions reduction for COcapture

#50
20150314262
2015-11-05

High capacity solid filtration media

#51
20150224441
2015-08-13

Method for preventing fouling of exhaust gas flow path of burning equipment and method for removing ammonium hydrogen sulfate contained in exhaust gas of burning equipment

#52
20150152341
2015-06-04

Removal of hydrocarbon contaminants

#53
20150147241
2015-05-28

Infectious medical waste treatment system

#54
20150143799
2015-05-28

System and method of defulfurizing lean NOx trap

#55
20150104365
2015-04-16

Flue-gas purification and reclamation system and method thereof

#56
20150000244
2015-01-01

System and method for reducing emissions via solvent injection

#57
20140241969
2014-08-28

Process of removing HCN from flue gas

#58
20140163299
2014-06-12

Ultraviolet and hydrogen peroxide or ozone or ozone and hydrogen peroxide treatment to simultaneously control nitrosamine, nitramine, amine and aldehyde emissions from amine-based carbon capture

#59
20140147360
2014-05-29

Method and apparatus for reactive gas remediation

#60
20140050643
2014-02-20

Flur-gas purification and reclamation system and method thereof

#61
20130302234
2013-11-14

High capacity solid filtration media

#62
20130283854
2013-10-31

Adsorbed natural gas storage facility

#63
20130251600
2013-09-26

Emissions reduction for COcapture

#64
20130209319
2013-08-15

Exhaust-gas aftertreatment system

#65
20130123099
2013-05-16

Catalytic adsorbents obtained from municipal sludges, industrial sludges, compost and tobacco waste and a rotary drying process for their production

#66
20130102456
2013-04-25

Catalytic adsorbents obtained from municipal sludges, industrial sludges, compost and tobacco waste and process for their production

#67
20120240649
2012-09-27

Removal of urea and ammonia from exhaust gases

#68
20110265270
2011-11-03

Odorless foam mattress assembly

#69
20110262331
2011-10-27

Air pollution control system and air pollution control method

#70
20110250113
2011-10-13

Method of treating a syngas stream and an apparatus therefor

#71
20110194988
2011-08-11

HYDRAZINE SPILL PAD APPARATUS AND METHOD OF MANUFACTURING

#72
20110182780
2011-07-28

Hydrazine filtration method and system

#73
20110165047
2011-07-07

Sulfide scavenging processes

#74
20110000191
2011-01-06

EXHAUST GAS TREATMENT SYSTEM AND METHOD

#75
20100152038
2010-06-17

CATALYTIC ADSORBENTS OBTAINED FROM MUNICIPAL SLUDGES, INDUSTRIAL SLUDGES, COMPOST AND TOBACCO WASTE AND PROCESS FOR THEIR PRODUCTION

#76
20100061905
2010-03-11

Removal of hydrogen cyanide from synthesis gas

#77
20080300131
2008-12-04

CATALYTIC ADSORBENTS OBTAINED FROM MUNICIPAL SLUDGES, INDUSTRIAL SLUDGES, COMPOST AND TOBACCO WASTE AND A ROTARY DRYING PROCESS FOR THEIR PRODUCTION

#78
20070212270
2007-09-13

Apparatus for removing vaporized unreacted isocyanate from a gaseous waste stream

#79
20070183953
2007-08-09

Separation of ammonia from sulfur compounds

#80
20070157810
2007-07-12

High capacity solid filtration media

#81
20070113736
2007-05-24

CATALYTIC ADSORBENTS OBTAINED FROM MUNICIPAL SLUDGES, INDUSTRIAL SLUDGES, COMPOST AND TOBACCO WASTE AND PROCESS FOR THEIR PRODUCTION

#82
20070003457
2007-01-04

Complex shaped fiber for particle and molecular filtration

#83
20050214188
2005-09-29

Complex shaped fiber for particle and molecular filtration

#84
20050056147
2005-03-17

Process for purifying off-gases of a melamine plant

#85
18798438
2025-04-22

Integrated device and method for continuously capturing, storing and separating flue gas in underground rock stratum