Patents-Review.com
ClassID:

30443 ⎘

B01D2255/904 - CPC Classification

Classification description:

Catalysts; Physical characteristics of catalysts Multiple catalysts

Sub-classes:
Recent Application in this class:
#1
20260138087
2026-05-21

NH3-SCR DENITRATION SYSTEM AND METHOD FOR SYNERGISTIC PURIFICATION OF CO

 #2
20260115662
2026-04-30

METHOD FOR CONTROLLING SEMICONDUCTOR PROCESS ENVIRONMENT

 #3
20260110259
2026-04-23

SYSTEMS AND METHODS FOR TREATMENT OF GAS ENGINE EXHAUST

 #4
20260021449
2026-01-22

SELECTIVE CATALYTIC REDUCTION SYSTEM FOR EXHAUST GAS TREATMENT, AND EXHAUST GAS PURIFICATION APPARATUS FOR LEAN COMBUSTION ENGINES COMPRISING SELECTIVE CATALYTIC REDUCTION SYSTEM FOR EXHAUST GAS TREATMENT

 #5
20250381524
2025-12-18

CATALYST BODY FOR PURIFYING EXHAUST GAS OF GASOLINE ENGINE, AND EXHAUST GAS PURIFICATION SYSTEM USING SAME

 #6
20250256242
2025-08-14

EXHAUST GAS TREATMENT APPARATUS, COMBUSTION FACILITY, POWER GENERATION FACILITY, AND EXHAUST GAS TREATMENT METHOD

 #7
20250154890
2025-05-15

Catalytic wall-flow filter

 #8
20240384675
2024-11-21

Aftertreatment for alcohol fuel substituted diesel engines

 #9
20240316495
2024-09-26

METHANE CONVERSION REACTOR HAVING FORCED AIR DELIVERY

 #10
20240110499
2024-04-04

VALVE ARRANGEMENT FOR SPLIT-FLOW CLOSE-COUPLED CATALYST

 #11
20240091751
2024-03-21

COPPER CHA ZEOLITE CATALYSTS

 #12
20240035406
2024-02-01

Catalytic converter of vehicle

 #13
20240001343
2024-01-04

PLATINUM ENRICHED MULTI-REGION CATALYSTS FOR CNG ENGINE EXHAUST GAS TREATMENTS

 #14
20230398491
2023-12-14

AIR PURIFIER AND OPERATING METHOD THEREOF

 #15
20230265773
2023-08-24

LNT regeneration with hydrogen for transport engine application

 #16
20230265772
2023-08-24

Exhaust system for an ammonia-burning combustion engine

 #17
20230250747
2023-08-10

Accelerated catalyst reactivation control strategy for gasoline vehicle emissions system in conjunction with N2 selective catalyst to minimize NOX remake

 #18
20230249158
2023-08-10

THREE-WAY CATALYTIC CONVERSION SYSTEM FOR PURIFICATION TREATMENT OF ENGINE EXHAUST GAS AND USE THEREOF

 #19
20230219064
2023-07-13

EXHAUST GAS EMISSIONS ABATEMENT SYSTEM

 #20
20230201812
2023-06-29

AMMONIA ADSORPTION CATALYST AND PREPARATION METHOD AND USE THEREOF

 #21
20230193803
2023-06-22

Method for controlling the operation of an exhaust aftertreatment system

 #22
20230191325
2023-06-22

A PROCESS FOR THE REMOVAL OF NOX AND DINITROGEN OXIDE IN PROCESS OFF-GAS

 #23
20230081351
2023-03-16

Copper CHA zeolite catalysts

 #24
20230037326
2023-02-09

Method for adaption of an exhaust treatment system

 #25
20220341359
2022-10-27

Accelerated catalyst reactivation control strategy for gasoline vehicle emissions system in conjunction with N2 selective catalyst to minimize NOX remake

 #26
20220323905
2022-10-13

Exhaust treatment system for ammonia-fueled vehicles

 #27
20220274059
2022-09-01

Catalyst arrangement deciding method for flue gas denitrizer, maintenance method for flue gas denitrizer, flue gas denitrizer, boiler, and power generation plant

 #28
20220259997
2022-08-18

DEF system

 #29
20220220880
2022-07-14

Valve arrangement for split-flow close-coupled catalyst

 #30
20220213822
2022-07-07

Systems and methods for dynamic control of filtration efficiency and fuel economy

 #31
20220212169
2022-07-07

AUTOMOTIVE 3-WAY CATALYST SYSTEM CONTAINING A TAIL PIPE CATALYST

 #32
20220205644
2022-06-30

System and method for controlling smoke during air frying in a range or oven

 #33
20220203339
2022-06-30

LAYERED CATALYTIC ARTICLE AND METHOD OF MANUFACTURING THE CATALYTIC ARTICLE

 #34
20220203336
2022-06-30

Exhaust gas treatment system for ultra low NOx and cold start

 #35
20220178293
2022-06-09

Internal swirler tube for exhaust catalyst

 #36
20220161236
2022-05-26

LAYERED TRI-METALLIC CATALYTIC ARTICLE AND METHOD OF MANUFACTURING THE CATALYTIC ARTICLE

 #37
20220136424
2022-05-05

Internal Combustion Engine Exhaust Aftertreatment System

 #38
20220065149
2022-03-03

EXHAUST GAS PURIFICATION SYSTEM WITH AIR INJECTION

 #39
20220062884
2022-03-03

Exhaust gas purification device

 #40
20220034245
2022-02-03

Systems and methods for dynamic control of filtration efficiency and fuel economy

 #41
20210346842
2021-11-11

Low temperature nitrogen oxide adsorber

 #42
20210332731
2021-10-28

Exhaust gas purification system for a gasoline engine

 #43
20210331142
2021-10-28

Multi-region catalysts for CNG engine exhaust gas treatments with improved ammonia leakage control

 #44
20210299643
2021-09-30

Ammonia slip catalyst with in-situ PT fixing

 #45
20210252456
2021-08-19

Nitrogen oxide storage catalyst

 #46
20210215079
2021-07-15

Exhaust gas aftertreatment system with a selective catalytic reduction catalyst member upstream of a particulate filter

 #47
20210213434
2021-07-15

Diesel oxidation catalysts for ultralow NOcontrol

 #48
20210199039
2021-07-01

After treatment system for a vehicle

 #49
20210189931
2021-06-24

Diesel engine with a diesel particulate filter

 #50
20210180497
2021-06-17

Method and device for determining the efficiency of an SCR catalyst

 #51
20210162382
2021-06-03

Palladium/zeolite-based passive nitrogen oxide adsorber catalyst for purifying exhaust gas

 #52
20210146305
2021-05-20

Combined soot filter and urea hydrolysis

 #53
20210140357
2021-05-13

Method for regulating exhaust emissions

 #54
20210102486
2021-04-08

Hydrogen-assisted integrated emission control system

 #55
20210087958
2021-03-25

Work vehicle including diesel particulate filter (DPF) regeneration control

 #56
20210033012
2021-02-04

Method and system for diagnosing an aftertreatment component subjected to an exhaust gas stream

 #57
20210003057
2021-01-07

Method for operating a petrol engine, in particular of a motor vehicle, and motor vehicle

 #58
20200386178
2020-12-10

Exhaust gas purification system for vehicle and method of controlling the same

 #59
20200384446
2020-12-10

Phosphorus compound-containing exhaust gas purifying catalyst

 #60
20200261895
2020-08-20

Copper CHA zeolite catalysts

 #61
20200248608
2020-08-06

After treatment system and after treatment method for lean-burn engine

 #62
20200248607
2020-08-06

After treatment system and after treatment method for lean-burn engine

 #63
20200173324
2020-06-04

Methods and systems for a diesel oxidation catalyst

 #64
20200131960
2020-04-30

CATALYTIC DEVICE AND EXHAUST GAS PURIFICATION SYSTEM

 #65
20200018216
2020-01-16

Exhaust gas purification system

 #66
20190376432
2019-12-12

Exhaust aftertreatment system and method for regenerating a particulate filter

 #67
20190353068
2019-11-21

Exhaust emission reduction system having an HC-trap and NOx-trap combination designed for operating under strategic lean conditions

 #68
20190291051
2019-09-26

Two-stage catalyst for removal of NOfrom exhaust gas stream

 #69
20190242284
2019-08-08

Diesel exhaust fluid pressure measuring and control systems and methods

 #70
20190234284
2019-08-01

ASSEMBLIES AND METHODS FOR REDUCING PARTICULATE MATTER, HYDROCARBONS, AND GASEOUS OXIDES FROM INTERNAL COMBUSTION ENGINE EXHAUST

 #71
20190234281
2019-08-01

NOx storage catalyst monitoring methods

 #72
20190170042
2019-06-06

Selective catalytic reduction articles and systems

 #73
20190168189
2019-06-06

Catalysed substrate monolith

 #74
20190168158
2019-06-06

HYDROGEN PEROXIDE VAPOR DETOXIFYING SYSTEM

 #75
20190151829
2019-05-23

Exhaust gas purification underfloor catalyst and catalyst system

 #76
20190120104
2019-04-25

Exhaust gas purification device

 #77
20190118126
2019-04-25

FILTER BAG ASSEMBLY COMPRISING CATALYTIC MATERIAL

 #78
20190085746
2019-03-21

AFTERTREATMENT SYSTEM

 #79
20190083967
2019-03-21

Desulfation method for SCR catalyst

 #80
20190076783
2019-03-14

Clean gas stack

 #81
20190070558
2019-03-07

Thermally integrated compact aftertreatment system

 #82
20190063292
2019-02-28

Variable-position mixer for an exhaust gas after-treatment system

 #83
20190040778
2019-02-07

Exhaust treatment system and method for treatment of an exhaust stream

 #84
20190032533
2019-01-31

Exhaust gas treatment systems utilizing a single electrically heated catalyst

 #85
20180304244
2018-10-25

PASSIVE NOx ADSORBER

 #86
20180283251
2018-10-04

Two-stage catalyst for removal of NOfrom exhaust gas stream

 #87
20180280878
2018-10-04

CATALYST FOR EXHAUST GAS PURIFICATION, METHOD FOR PRODUCING SAME AND EXHAUST GAS PURIFICATION APPARATUS COMPRISING SAID CATALYST

 #88
20180274420
2018-09-27

Method for controlling an SCR system having two metering valves

 #89
20180274413
2018-09-27

Methods and systems for a diesel oxidation catalyst

 #90
20180272281
2018-09-27

Exhaust gas purifying device

 #91
20180230886
2018-08-16

ASSEMBLIES AND METHODS FOR REDUCING PARTICULATE MATTER, HYDROCARBONS, AND GASEOUS OXIDES FROM INTERNAL COMBUSTION ENGINE EXHAUST

 #92
20180230883
2018-08-16

Dual stage internal combustion engine aftertreatment system using exhaust gas intercooling and charger driven air ejector

 #93
20180230877
2018-08-16

Method and exhaust treatment system for treatment of an exhaust gas stream

 #94
20180223759
2018-08-09

Method and system for treatment of an exhaust gas stream

 #95
20180221855
2018-08-09

Catalyst for purifying the exhaust gases of diesel engines

 #96
20180216512
2018-08-02

Oxygen correction for engine-out NOx estimates using a NOx sensor of an aftertreatment system

 #97
20180179978
2018-06-28

NOx sensor inspection program, vehicle inspection equipment, NOx sensor inspection method, and recording medium

 #98
20180171910
2018-06-21

Control apparatus for internal combustion engine

 #99
20180133652
2018-05-17

Devices for purifying exhaust gas

 #100
20180126016
2018-05-10

Catalyst Unit for Splitting a Decontamination Agent Introduced Into a Containment for a Decontamination Process

 #101
20180112583
2018-04-26

Apparatus for measuring combustible-gas concentration, system for measuring combustible-gas concentration, system for treating exhaust gas, method for measuring combustible-gas concentration, and method for deriving constant

 #102
20180111084
2018-04-26

Integrated purification method and system for the industrial exhaust gas containing cyanides, hydrocarbons and NO

 #103
20180087426
2018-03-29

System for regulating exhaust emissions

 #104
20180078926
2018-03-22

RUTHENIUM SUPPORTED ON SUPPORTS HAVING A RUTILE PHASE AS STABLE CATALYSTS FOR NH3-SLIP APPLICATIONS

 #105
20180056281
2018-03-01

Copper CHA zeolite catalysts

 #106
20180045096
2018-02-15

System and method for controlling detecting and cleaning diesel-exhaust-fluid injector deposits

 #107
20180043336
2018-02-15

Lean NOtrap with enhanced high and low temperature performance

 #108
20180043335
2018-02-15

NOadsorber catalyst, methods and systems

 #109
20180038252
2018-02-08

Exhaust gas treatment system

 #110
20180015446
2018-01-18

Oxidation catalyst for a stoichiometric natural gas engine

 #111
20180008964
2018-01-11

Catalyzed ceramic candle filter and method for cleaning of off- or exhaust gases

 #112
20170368541
2017-12-28

Molecular sieve catalyst compositions, catalyst composites, systems, and methods

 #113
20170362978
2017-12-21

Apparatus for purifying exhaust gas

 #114
20170341026
2017-11-30

Vanadium Catalysts for High Engine-Out NO2 Systems

 #115
20170328250
2017-11-16

Application of synergized-PGM with ultra-low PGM loadings as close-coupled three-way catalysts for internal combustion engines

 #116
20170328249
2017-11-16

Application of synergized-PGM with ultra-low PGM loadings as underfloor three-way catalysts for internal combustion engines

 #117
20170321590
2017-11-09

Engine exhaust system

 #118
20170284262
2017-10-05

CO slip catalyst and method of using

 #119
20170284256
2017-10-05

Reducing agent injection device and exhaust gas treatment method

 #120
20170284252
2017-10-05

Method for treating an exhaust gas

 #121
20170282166
2017-10-05

Multiple zeolite hydrocarbon traps

 #122
20170276053
2017-09-28

After-Treatment System

 #123
20170276044
2017-09-28

After-treatment system

 #124
20170274358
2017-09-28

Catalysed substrate monolith

 #125
20170266649
2017-09-21

Hydrocarbon storage optimization and coking prevention on an oxidation catalyst

 #126
20170239618
2017-08-24

A PROCESS FOR THE OXIDATION OF HYDROGEN SULFIDE TO SULFUR TRIOXIDE WITH SUBSEQUENT SULFUR REMOVAL AND A PLANT FOR CARRYING OUT THE PROCESS

 #127
20170226910
2017-08-10

Electrically heated catalyst

 #128
20170198619
2017-07-13

System and method for regulating exhaust emissions

 #129
20170189854
2017-07-06

Ammonia slip catalyst

 #130
20170167336
2017-06-15

Apparatus for purifying exhaust gas

 #131
20170167335
2017-06-15

Catalyzed particulate filter

 #132
20170157563
2017-06-08

Catalyst system for lean NOx reduction with hydrocarbons

 #133
20170157560
2017-06-08

INSTALLATION COMPRISING AN EXHAUST GAS-GENERATING TREATMENT DEVICE, AN OXIDATION CATALYTIC CONVERTER AND A REDUCTION CATALYTIC CONVERTER, AS WELL AS A METHOD FOR TREATING EXHAUST GAS IN SUCH AN INSTALLATION

 #134
20170146238
2017-05-25

WASTE GAS TREATMENT DEVICE AND METHOD FOR TREATING WASTE GAS

 #135
20170144105
2017-05-25

Catalyst for treating exhaust gas

 #136
20170128914
2017-05-11

Exhaust gas treatment system

 #137
20170128885
2017-05-11

Thermally integrated compact aftertreatment system

 #138
20170122175
2017-05-04

SCR exhaust aftertreatment apparatus, system and methods including multiple washcoat formulations

 #139
20170122158
2017-05-04

Diesel particulate filter coated with selective catalytic reduction and exhaust gas aftertreatment system including the same

 #140
20170089240
2017-03-30

Exhaust gas post-processing system

 #141
20170087541
2017-03-30

Zoned ammonia slip catalyst for use in combustion turbines

 #142
20170072365
2017-03-16

AFTERTREATMENT SYSTEM FOR DIESEL VEHICLE

 #143
20170058742
2017-03-02

METHODS AND SYSTEMS RELATED TO SELECTIVE CATALYTIC REDUCTION

 #144
20170056824
2017-03-02

Exhaust treatment system with particulate filter having wall-flow and flow-through channels

 #145
20170014766
2017-01-19

Catalyst system for gasoline combustion engines, having three-way catalysts and SCR catalyst

 #146
20170009623
2017-01-12

Nitrogen oxides (NOx) storage catalyst

 #147
20160367938
2016-12-22

Single or dual layer ammonia slip catalyst

 #148
20160346732
2016-12-01

Method of controlling a multi selective catalytic reduction system

 #149
20160339389
2016-11-24

Diesel oxidation catalyst and use thereof in diesel and advanced combustion diesel engine systems

 #150
20160326928
2016-11-10

System and method of isolating component failures in an exhaust aftertreatment system

 #151
20160312678
2016-10-27

Advanced exhaust aftertreatment system architecture

 #152
20160298517
2016-10-13

Device for purifying the exhaust gas of an internal combustion engine

 #153
20160296889
2016-10-13

Catalyst for the oxidation of sulfur compounds

 #154
20160263524
2016-09-15

Process for removing sulfur compounds from a gas with hydrogenation and direct oxidation steps

 #155
20160129431
2016-05-12

Copper Containing Levyne Molecular Sieve For Selective Reduction Of NOx

 #156
20160107150
2016-04-21

NON-PLATINUM BASED AMMONIA OXIDATION CATALYSTS AND APPLICATIONS ON AFTERTREATMENT SYSTEMS

 #157
20160101412
2016-04-14

Copper CHA zeolite catalysts

 #158
20160101411
2016-04-14

Copper CHA zeolite catalysts

 #159
20160038878
2016-02-11

Zoned catalyst for treating exhaust gas

 #160
20160001229
2016-01-07

PARTICULATE MATTER FILTER WITH CATALYTIC ELEMENTS

 #161
20150377110
2015-12-31

Angled and compact exhaust gas aftertreatment device

 #162
20150367337
2015-12-24

Molecular sieve catalyst compositions, catalytic composites, systems, and methods

 #163
20150367336
2015-12-24

Molecular sieve catalyst compositions, catalyst composites, systems, and methods

 #164
20150322839
2015-11-12

Exhaust gas purification apparatus for internal combustion engine

 #165
20150322837
2015-11-12

Exhaust emission control system of internal combustion engine

 #166
20150290587
2015-10-15

Exhaust gas purification apparatus for internal combustion engine

 #167
20150273393
2015-10-01

Emission control in rich burn natural gas engines

 #168
20150258494
2015-09-17

Catalyst structure for exhaust gas cleaning

 #169
20150238934
2015-08-27

Catalysed substrate monolith

 #170
20150231565
2015-08-20

Method for the purification of diesel engine exhaust gases

 #171
20150224477
2015-08-13

METHOD FOR THE PREPARATION OF A CATALYSED PARTICULATE FILTER AND CATALYSED PARTICULATE FILTER

 #172
20150204214
2015-07-23

Method and apparatus for operating a gas turbine power plant at low load conditions with stack compliant emissions levels

 #173
20150139897
2015-05-21

Copper CHA zeolite catalysts

 #174
20150132206
2015-05-14

Copper CHA zeolite catalysts

 #175
20150128566
2015-05-14

Exhaust gas purification system and method for purifying exhaust gas

 #176
20150107228
2015-04-23

Pollutant abatement system for gasoline vehicles

 #177
20150098870
2015-04-09

Selective catalytic reduction catalyst

 #178
20150064088
2015-03-05

Zeolite blend catalysts for treating exhaust gas

 #179
20150030507
2015-01-29

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

 #180
20140335005
2014-11-13

Method of removing sulfur oxides and nitrogen oxides in the flue gas

 #181
20140112833
2014-04-24

Exhaust gas control apparatus for internal combustion engine

 #182
20140023576
2014-01-23

Systems and methods for reducing secondary emissions from catalyst components

 #183
20130232958
2013-09-12

System and method to manage SCR catalyst NO/NOratio

 #184
20120328499
2012-12-27

EXHAUST GAS PURIFICATION CATALYST APPARATUS USING SELECTIVE REDUCTION-TYPE CATALYST AND EXHAUST GAS PURIFICATION METHOD

 #185
20120279206
2012-11-08

DEVICE, METHOD, AND SYSTEM FOR EMISSIONS CONTROL

 #186
20120247086
2012-10-04

Exhaust methane control systems and methods

 #187
20120240554
2012-09-27

Manganese-based oxides promoted lean NOtrap (LNT) catalyst

 #188
20120216512
2012-08-30

Exhaust emission control device for internal combustion engine

 #189
20120214663
2012-08-23

LNT and SCR catalysts for combined LNT-SCR applications

 #190
20120208691
2012-08-16

Copper containing levyne molecular sieve for selective reduction of NOx

 #191
20120087838
2012-04-12

Catalyst and method of manufacture

 #192
20110268635
2011-11-03

SCR on low thermal mass filter substrates

 #193
20110200515
2011-08-18

Catalyst containment unit

 #194
20100183490
2010-07-22

Diesel oxidation catalyst and use thereof in diesel and advanced combustion diesel engine systems

 #195
20100180771
2010-07-22

FLUIDIZED BED SYSTEM FOR REMOVING MULTIPLE POLLUTANTS FROM A FUEL GAS STREAM

 #196
20090260346
2009-10-22

METHOD FOR PURIFICATION OF AN EXHAUST GAS FROM A DIESEL ENGINE

 #197
20090069174
2009-03-12

CATALYST FOR PURIFICATION OF EXHAUST GAS AND METHOD OF MANUFACTURING THE SAME

 #198
20080202107
2008-08-28

SCR on low thermal mass filter substrates

 #199
20070277513
2007-12-06

Exhaust Purification System of Internal Combustion Engine

 #200
20070246433
2007-10-25

Refractory exhaust filtering method and apparatus

 #201
20070104632
2007-05-10

Refractory exhaust filtering method and apparatus

 #202
20070059223
2007-03-15

Catalyst structure for treating NOcontaining exhaust gas from a lean burn engine

 #203
18319239
2024-06-11

Aftertreatment for alcohol fuel substituted diesel engines

 #204
17651700
2023-06-27

Device for the reduction of ammonia and nitrogen oxides emissions

 #205
17097016
2022-05-10

Catalytic reactor

 #206
17083435
2021-11-16

Removal of hydrogen impurity from gas streams

 #207
16263593
2020-06-30

After treatment system and after treatment method for lean-burn engine

 #208
16142634
2019-11-19

Exhaust after-treatment system for diesel internal combustion engines

 #209
15849163
2019-04-30

Exhaust system for a work vehicle