ClassID:

29708

B01D53/565 - 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; Nitrogen oxides by treating the gases with solids

Recent Application in this class:
#1
20260084106
2026-03-26

METHOD AND SYSTEM FOR GAS SEPARATION IN FIXED BEDS

#2
20260014541
2026-01-15

SYSTEM AND METHOD OF GAS TREATMENT WITH BIOCHAR SORBENT SYSTEM IN POWER PLANT

#3
20250303361
2025-10-02

SYSTEM AND METHOD FOR OXIDATIVE ADSORPTION IN A MOVING BED REACTOR WITH REGENERATED ACTIVATED CARBON

#4
20250135390
2025-05-01

METHOD FOR ANALYZING GAS CONTAINING NITROSYL FLUORIDE, AND METHOD FOR REMOVING NITROSYL FLUORIDE IN GAS

#5
20240189798
2024-06-13

SORBENTS FOR REMOVAL OF NITROGEN OXIDES AND METHOD OF MAKING

#6
20240058751
2024-02-22

SULPHUR TOLERANCE IN Cu-SCR CATALYSTS

#7
20240001332
2024-01-04

NOXIOUS GAS PURIFICANT AND ITS PREPARATION AND PURIFICATION METHOD THEREOF

#8
20240001278
2024-01-04

CENTRAL CONTROLLER FOR COMPLETELY CLEANING INDOOR AIR POLLUTION

#9
20230077113
2023-03-09

COMPOSITIONS FOR REDUCING INHALATION OF TOXIC AIR POLLUTION COMPONENTS

#10
20230001353
2023-01-05

Transition metal/zeolite SCR catalysts

#11
20220372192
2022-11-24

SINGLE-USE FILTER COMPONENT, A METHOD FOR TREATING AIR AND USE OF A POLYMER OR COPOLYMER OF DIVINYLBENZENE

#12
20220339580
2022-10-27

COLLECTION AND SEPARATION SYSTEMS AND METHODS OF USE THEREOF AND ISOTOPE ANALYSIS SYSTEMS AND METHODS OF USE THEREOF

#13
20220143573
2022-05-12

High mechanical strength sorbent product, system, and method for controlling multiple pollutants from process gas

#14
20220040636
2022-02-10

Exhaust gas purifying catalyst

#15
20220040635
2022-02-10

Exhaust gas purifying catalyst

#16
20220040634
2022-02-10

Method for desulphurizating and denitrating flue gas in integrated manner based on low-temperature adsorption

#17
20220032232
2022-02-03

Filter medium for separating nitrogen oxides

#18
20220001323
2022-01-06

Gas treatment system having increased service life

#19
20210205557
2021-07-08

APPARATUS, SYSTEMS AND METHOD FOR COLLECTING AND RECLAIMING ANAESTHETIC AGENTS AND FOR REMOVING NITROUS OXIDE FROM EXHAUST GASES

#20
20210069643
2021-03-11

Process for reducing the content of NOx and N2O from a tail gas of a nitric acid process

#21
20200406188
2020-12-31

BIO-FILTER SYSTEM

#22
20200391155
2020-12-17

Exhaust gas treatment system

#23
20200384449
2020-12-10

Catalytic articles

#24
20200299166
2020-09-24

Methods and systems for removing nitrates in Zero Liquid Discharge applications

#25
20200238111
2020-07-30

COMPOSITIONS FOR REDUCING INHALATION OF TOXIC AIR POLLUTION COMPONENTS

#26
20200179902
2020-06-11

Noxious gas purificant and its preparation and purification method thereof

#27
20200149453
2020-05-14

METHOD FOR THE AFTERTREATMENT OF THE EXHAUST GAS OF AN INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE

#28
20200139073
2020-05-07

NITRIC OXIDE TREATMENT SYSTEM AND METHOD

#29
20200108376
2020-04-09

SCR catalyst

#30
20200061576
2020-02-27

High mechanical strength sorbent product, system, and method for controlling multiple pollutants from process gas

#31
20200047119
2020-02-13

Exhaust gas purifying catalyst

#32
20200030741
2020-01-30

Molten hydroxide membrane for separation of acid gases from emissions

#33
20200030740
2020-01-30

Molten hydroxide membrane for separation of acid gases from emissions

#34
20200016531
2020-01-16

Method for NOuptake using a particulate earth alkali carbonate-comprising material and/or particulate earth alkali phosphate-comprising material

#35
20190388834
2019-12-26

METHOD FOR THE POST-COMBUSTION OF FLUE GASES

#36
20190275462
2019-09-12

Methods and compositions for the removal of mercury from gases

#37
20190247836
2019-08-15

SCR catalysts having improved low temperature performance, and methods of making and using the same

#38
20190217280
2019-07-18

Catalyst comprising a molecular sieve belonging to the ABC-6 framework family with disorder in the ABC stacking sequence and use of the catalyst

#39
20190060829
2019-02-28

Method and apparatus for removing nitrogen oxides from gas streams

#40
20180361316
2018-12-20

POWDERED COMPOSTION COMPRISING ONE OR MORE DOUBLE SALT(S) FOR USE IN COMBUSTION GAS PURIFICATION

#41
20180326406
2018-11-15

Emissions control system including capability to clean and/or rejuvenate CZTS sorbents, CZTS-alloy sorbents, and/or CZTS-mixture sorbents, and method of use

#42
20180304234
2018-10-25

NOx reducing coatings and methods for reducing NOx therewith

#43
20180272279
2018-09-27

Transition metal/zeolite SCR catalysts

#44
20180214813
2018-08-02

Protein nanofiber air filter materials and methods

#45
20180099245
2018-04-12

Gas denitration process and apparatus

#46
20180043329
2018-02-15

High mechanical strength sorbent product, system, and method for controlling multiple pollutants from process gas

#47
20180028966
2018-02-01

Systems and methods for increasing nitrogen dioxide fraction in exhaust gas at low temperature

#48
20170341022
2017-11-30

METHOD AND EXHAUST SYSTEM FOR TREATING NOX IN EXHAUST GAS FROM STATIONARY EMISSION SOURCES

#49
20170333834
2017-11-23

Molten hydroxide membrane for separation of acid gases from emissions

#50
20170312685
2017-11-02

Processes for filtering chemicals from air streams

#51
20170281993
2017-10-05

Compositions for reducing inhalation of toxic air pollution components

#52
20170274309
2017-09-28

Mechanical system to capture and transform contaminant gases, and method to purify air

#53
20170263964
2017-09-14

Rechargeable battery assembly for a vehicle

#54
20170056610
2017-03-02

APPARATUS, SYSTEMS AND METHOD FOR COLLECTING AND RECLAIMING ANAESTHETIC AGENTS AND FOR REMOVING NITROUS OXIDE FROM EXHAUST GASES

#55
20160236146
2016-08-18

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

#56
20160206994
2016-07-21

METHOD AND APPARATUS FOR REMOVING CARBON DIOXIDE FROM FLUE GAS

#57
20160144316
2016-05-26

Low pressure drop static mixing system

#58
20160082389
2016-03-24

Methods for removing contaminants from exhaust gases

#59
20150337711
2015-11-26

Catalytic converter apparatus

#60
20150322833
2015-11-12

Method and cleaning apparatus for removal of SOx and NOx from exhaust gas

#61
20150314262
2015-11-05

High capacity solid filtration media

#62
20150267131
2015-09-24

NOremoval method

#63
20150246346
2015-09-03

SCR catalysts having improved low temperature performance, and methods of making and using the same

#64
20150165374
2015-06-18

Equipment for purifying a wet gas stream containing COand NOx

#65
20150151288
2015-06-04

SCR catalyst

#66
20150147251
2015-05-28

Method for improving lean performance of PGM catalyst systems: synergized PGM

#67
20150086454
2015-03-26

Catalytic converter apparatus

#68
20150086436
2015-03-26

Exhaust gas processing device

#69
20150078978
2015-03-19

Treatment of nitrogen oxides in flue gas streams

#70
20150078968
2015-03-19

TRANSITION METAL/ZEOLITE SCR CATALYSTS

#71
20150064074
2015-03-05

ZEIOLITE CATALYST CONTAINING METAL

#72
20150056118
2015-02-26

Flue gas stream bypass during selective catalytic reduction in a power plant

#73
20150038324
2015-02-05

Catalyst support materials, catalysts, methods of making them and uses thereof

#74
20150037232
2015-02-05

Absorption and oxidation of NO in ionic liquids

#75
20150030507
2015-01-29

Catalyst system for exhaust gas purification utilizing base metals, and controlling method therefor

#76
20140271435
2014-09-18

Catalysed filter based on biosoluble fibers

#77
20140260471
2014-09-18

Cleaning stack gas

#78
20140227368
2014-08-14

Methods for scavenging nitric oxide using cerium oxide nanoparticles

#79
20140161700
2014-06-12

Method and system for NOreduction in flue gas

#80
20140161694
2014-06-12

Supported catalyst for removing nitrogen oxides, method of preparing the same, and removing method of nitrogen oxides using the same

#81
20140150410
2014-06-05

Ammonia gas generator for producing ammonia in order to reduce nitrogen oxides in exhaust gases

#82
20140147356
2014-05-29

Ammonia gas generator and method for producing ammonia in order to reduce nitrogen oxides in exhaust gases

#83
20140134089
2014-05-15

Apparatus and method for the selective non-catalytic reduction (SNCR) of NOx in industrial cement production plants

#84
20140127100
2014-05-08

Method for the production of ammonia from an ammonia precursor substance in order to reduce nitrogen oxides in exhaust gases

#85
20140116358
2014-05-01

Method of treating a carbon dioxide rich flue gas and a flue gas treatment system

#86
20140105803
2014-04-17

METHOD FOR PREPARING CATALYST FOR REMOVING NITROGEN OXIDES USING DRY BALL MILLING

#87
20140105800
2014-04-17

METHOD FOR PROCESSING A POWER PLANT FLUE GAS

#88
20140099248
2014-04-10

Method for urea decomposition and ammonia feed to a selective catalytic reduction system

#89
20140099247
2014-04-10

Method for in-duct urea injection for selective catalytic reduction on small boilers and combustion sources

#90
20140093442
2014-04-03

Dual Function Catalytic Filter

#91
20140072508
2014-03-13

Method for Transforming Nitrogen-Containing Compounds

#92
20140056793
2014-02-27

Catalyst support materials, catalysts, methods of making them and uses thereof

#93
20140050626
2014-02-20

Catalytic filter module and catalytic filter system comprising same

#94
20140044636
2014-02-13

Catalytic reduction of NOx with high activity catalysts

#95
20140044634
2014-02-13

Ammonia injection system for an HRSG

#96
20140044633
2014-02-13

Catalytic reduction of NOx with high activity catalysts with propylene reductant

#97
20140030178
2014-01-30

Process to enhance mixing of dry sorbents and flue gas for air pollution control

#98
20140017139
2014-01-16

APPARATUS FOR DECOMPOSITION OF NITROUS OXIDE IN A GAS STREAM

#99
20140010748
2014-01-09

System using selective catalytic reduction for improving low-temperature De-NOx efficiency and reducing yellow plume

#100
20140004028
2014-01-02

System and method for low NOx emitting regeneration of desiccants

#101
20130323164
2013-12-05

CHA-type zeolite materials and methods for their preparation using cycloalkyammonium compounds

#102
20130302234
2013-11-14

High capacity solid filtration media

#103
20130287665
2013-10-31

Carrier for NOx reduction catalyst

#104
20130280160
2013-10-24

Chabazite-type zeolite and method for producing same, copper loaded low-silica zeolite and NOx reductive removal catalyst containing the zeolite, and method of NOx reductive removal using this catalyst

#105
20130272942
2013-10-17

Vanadium/titania catalyst comprising natural manganese ore for removing nitrogen oxides and dioxin in wide operating temperature range and method of using the same

#106
20130236382
2013-09-12

ZEOLITE SCR CATALYSTS WITH IRON OR COPPER

#107
20130236381
2013-09-12

Denitration catalyst composition and method of denitration using same

#108
20130230443
2013-09-05

Solid ammonia storage and delivery material

#109
20130209342
2013-08-15

PROCESS FOR REMOVING NITROUS OXIDE FROM A GAS STREAM

#110
20130209341
2013-08-15

PROCESS FOR REMOVING NITROUS OXIDE FROM A GAS STREAM

#111
20130202513
2013-08-08

Ce-based composite oxide catalyst, preparation method and application thereof

#112
20130190166
2013-07-25

NOx reduction catalyst for exhaust gas and method for producing same

#113
20130156672
2013-06-20

Process for removing nitrous oxide from a gas stream

#114
20130123099
2013-05-16

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

#115
20130102456
2013-04-25

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

#116
20130089483
2013-04-11

Cu-CHA/Fe-BEA mixed zeolite catalyst and process for the treatment of NOin gas streams

#117
20130078173
2013-03-28

COMBINED SLIP CATALYST AND HYDROCARBON EXOTHERM CATALYST

#118
20130028819
2013-01-31

CATALYTIC CONVERTER APPARATUS

#119
20120301381
2012-11-29

Transition metal/zeolite SCR catalysts

#120
20120301380
2012-11-29

TRANSITION METAL/ZEOLITE SCR CATALYSTS

#121
20120301379
2012-11-29

TRANSITION METAL/ZEOLITE SCR CATALYSTS

#122
20120301378
2012-11-29

TRANSITION METAL/ZEOLITE SCR CATALYSTS

#123
20120288428
2012-11-15

Methods and devices for reducing hazardous air pollutants

#124
20120204719
2012-08-16

Use of a concrete-based element for treatment of gases and volatile compounds

#125
20120201731
2012-08-09

Zeolite catalyst containing metal

#126
20120177540
2012-07-12

Exhaust gas processing device

#127
20120107204
2012-05-03

Combined slip catalyst and hydrocarbon exotherm catalyst

#128
20120093948
2012-04-19

Nitric Oxide Treatments

#129
20120020842
2012-01-26

Apparatus, systems and method for collecting and reclaiming anaesthetic agents and for removing nitrous oxide from exhaust gases

#130
20120000549
2012-01-05

Apparatus, systems and method for collecting and reclaiming anaesthetic agents and for removing nitrous oxide from exhaust gases

#131
20110315016
2011-12-29

Dry exhaust-gas treating apparatus

#132
20110256029
2011-10-20

Methods and devices for reducing hazardous air pollutants

#133
20110250127
2011-10-13

Transition metal/zeolite SCR catalysts

#134
20110100209
2011-05-05

Recovery of NF3 from adsorption operation

#135
20110000370
2011-01-06

AGGLOMERATES OF PRECIPITATED SILICA, METHOD FOR THEIR PREPARATION AND THEIR USE AS FILTER MEDIUM FOR GAS FILTRATION

#136
20100290963
2010-11-18

TRANSITION METAL / ZEOLITE SCR CATALYSTS

#137
20100234640
2010-09-16

Method for controlling multiple pollutants

#138
20100152038
2010-06-17

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

#139
20100068110
2010-03-18

Removal of Hg, NO, and SOwith using oxidants and staged gas/liquid contact

#140
20100050598
2010-03-04

Catalytic converter apparatus

#141
20090308252
2009-12-17

Bifunctional active sites for adsorption of NOx

#142
20090280047
2009-11-12

Solid ammonia storage and delivery material

#143
20090142242
2009-06-04

Vanadium/Titania Catalyst Comprising Natural Manganese Ore for Removing Nitrogen Oxides and Dioxin in Wide Operating Temperature Range and Method of Using the Same

#144
20090081093
2009-03-26

Methods and devices for reducing hazardous air pollutants

#145
20090028768
2009-01-29

Bifunctional active sites for adsorption of NOx

#146
20080300131
2008-12-04

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

#147
20080220387
2008-09-11

Combustion apparatus to reduce flue gas NOx by injection of n-agent droplets and gas in overfire air

#148
20080206120
2008-08-28

Method for purifying waste gases of a glass melting process, particularly for glasses for LCD display

#149
20080034968
2008-02-14

Agglomerates of precipitated silica, method for their preparation and their use as filter medium for gas filtration

#150
20070245895
2007-10-25

Material and process for the filtration of nitric acid and NOfrom streams of air

#151
20070191213
2007-08-16

Metal-containing compositions and their use as catalyst composition

#152
20070157810
2007-07-12

High capacity solid filtration media

#153
20070113736
2007-05-24

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

#154
20060135371
2006-06-22

Method for removing nitrogen oxides NOx using a material absorbing said oxides

#155
20060009671
2006-01-12

In-container mineralization

#156
20050276738
2005-12-15

Material and process for the filtration of nitric acid and NOfrom streams of air

#157
20050238549
2005-10-27

Electronic controls for pollutant removal

#158
20050229783
2005-10-20

Method for purification of lens gases used in photolithography

#159
20050214187
2005-09-29

Removal of Hg, NO, and SOwith using oxidants and staged gas/liquid contact

#160
20050207956
2005-09-22

Mixed metal oxide sorbents

#161
20050106516
2005-05-19

Method to reduce flue gas NOx

#162
20050096495
2005-05-05

In-container mineralization

#163
16375800
2020-01-21

Sorbents for capturing acid and greenhouse gases

#164
14090915
2014-09-30

Method for improving lean performance of PGM catalyst systems: synergized PGM