ClassID:

29783

B01D53/9472 - 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 of engine exhaust gases by catalytic processes; Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick in different zones

Recent Application in this class:
#1
20260124581
2026-05-07

Exhaust Gas Purifying Catalyst and Catalyst Body using the Same

#2
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

#3
20250381525
2025-12-18

EXHAUST GAS PURIFICATION DEVICE AND METHOD FOR MANUFACTURING EXHAUST GAS PURIFICATION DEVICE

#4
20250325944
2025-10-23

ZONED THREE-WAY CONVERSION CATALYSTS COMPRISING PLATINUM, PALLADIUM, AND RHODIUM

#5
20250288980
2025-09-18

COMPOSITE, ZONED OXIDATION CATALYST FOR A COMPRESSION IGNITION INTERNAL COMBUSTION ENGINE

#6
20250214071
2025-07-03

LAYERED AND PARTITIONED CATALYST ARTICLE

#7
20250083102
2025-03-13

EXHAUST GAS PURIFICATION CATALYST

#8
20250050318
2025-02-13

RHODIUM-FREE TWC CATALYTIC ARTICLE

#9
20250032983
2025-01-30

MANGANESE-CONTAINING CATALYTIC ARTICLES, EXHAUST GAS TREATMENT SYSTEMS, AND METHODS

#10
20240424445
2024-12-26

ZONED THREE-WAY CONVERSION CATALYSTS COMPRISING PLATINUM, PALLADIUM, AND RHODIUM

#11
20240416280
2024-12-19

EMISSIONS TREATMENT ARTICLES WITH INORGANIC FILTRATION DEPOSITS AND CATALYTIC MATERIAL

#12
20240399309
2024-12-05

CATALYTIC WALL FLOW FILTER

#13
20240390853
2024-11-28

EXHAUST GAS PURIFICATION DEVICE

#14
20240375092
2024-11-14

ELECTRICALLY HEATED CATALYST DEVICE

#15
20240316497
2024-09-26

EXHAUST GAS PURIFYING CATALYST

#16
20240287928
2024-08-29

EXHAUST GAS AFTERTREATMENT SYSTEM

#17
20240269612
2024-08-15

SULFUR-CONTAINING ORGANIC COMPOUND ASSISTED METAL NANOPARTICLE SYNTHESIS FOR THREE-WAY CATALYSIS APPLICATION

#18
20240269611
2024-08-15

SCR CATALYST ARTICLE AND SYSTEMS FOR REDUCING N2O IN EXHAUST GAS

#19
20240226864
2024-07-11

AMMONIA SLIP CATALYST FILTER

#20
20240216864
2024-07-04

A CATALYST FOR THE SELECTIVE CATALYTIC REDUCTION OF NOX AND FOR THE CRACKING AND CONVERSION OF A HYDROCARBON

#21
20240167410
2024-05-23

CATALYTIC ARTICLE COMPRISING VANADIUM-BASED CATALYST AND MOLECULAR SIEVE-BASED CATALYST

#22
20240157348
2024-05-16

SYSTEM FOR THE TREATMENT OF AN EXHAUST GAS OF A DIESEL COMBUSTION ENGINE

#23
20240149260
2024-05-09

EXHAUST GAS PURIFICATION DEVICE

#24
20240123403
2024-04-18

CATALYST FOR THE ABATEMENT OF AMMONIA FROM THE EXHAUST OF GASOLINE INTERNAL COMBUSTION ENGINES

#25
20240109060
2024-04-04

CATALYTICALLY ACTIVE PARTICLE FILTER WITH A HIGH DEGREE OF FILTRATION EFFICIENCY

#26
20240100478
2024-03-28

CATALYTICALLY ACTIVE PARTICLE FILTER WITH A HIGH DEGREE OF FILTERING EFFICIENCY

#27
20240024819
2024-01-25

Catalytic Devices for the Abatement of NH3 and Nox Emissions From Internal Combustion Engines

#28
20240017246
2024-01-18

EXHAUST GAS PURIFICATION DEVICE AND METHOD FOR MANUFACTURING EXHAUST GAS PURIFICATION DEVICE

#29
20240001343
2024-01-04

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

#30
20230405569
2023-12-21

EXHAUST GAS PURIFICATION CATALYST

#31
20230405568
2023-12-21

ZONED CATALYTIC ARTICLE

#32
20230372917
2023-11-23

EXHAUST GAS PURIFICATION DEVICE AND METHOD FOR MANUFACTURING EXHAUST GAS PURIFICATION DEVICE

#33
20230347326
2023-11-02

METHOD OF TREATING EXHAUST GAS AND SYSTEM FOR SAME

#34
20230338939
2023-10-26

Diesel Oxidation Catalyst

#35
20230338938
2023-10-26

EMISSION CONTROL CATALYST ARTICLE WITH ENRICHED PGM ZONE, METHOD AND APPARATUS TO PRODUCE THE SAME

#36
20230330638
2023-10-19

LAYERED CATALYTIC ARTICLE AND PROCESS FOR PREPARING THE CATALYTIC ARTICLE

#37
20230323802
2023-10-12

EXHAUST GAS TREATMENT SYSTEM

#38
20230311064
2023-10-05

METHOD FOR PRODUCING CATALYTICALLY ACTIVE WALL FLOW FILTERS

#39
20230278018
2023-09-07

COMPOSITE, ZONED OXIDATION CATALYST FOR A COMPRESSION IGNITION INTERNAL COMBUSTION ENGINE

#40
20230250747
2023-08-10

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

#41
20230211323
2023-07-06

Composite, zone-coated, dual-use ammonia (AMOX) and nitric oxide oxidation catalyst

#42
20230173465
2023-06-08

Denitrification-oxidation complex catalyst structure and manufacturing method thereof

#43
20230147850
2023-05-11

AN EMISSION CONTROL CATALYST ARTICLE WITH PGM-GRADIENT ARCHITECTURE

#44
20230143941
2023-05-11

CATALYSTS FOR GASOLINE EXHAUST GAS TREATMENTS WITH IMPROVED AMMONIA EMISSION CONTROL

#45
20230141207
2023-05-11

High ammonia storage capacity SCR catalysts

#46
20230104565
2023-04-06

LAYERED ZONE-COATED DIESEL OXIDATION CATALYSTS FOR IMPROVED CO/HC CONVERSION AND NO OXIDATION

#47
20230070493
2023-03-09

TWC CATALYSTS FOR GASOLINE ENGINE EXHAUST GAS TREATMENTS

#48
20230029275
2023-01-26

EXHAUST GAS PURIFICATION CATALYST

#49
20230027701
2023-01-26

CATALYZED SOOT FILTER WITH REDUCED AMMONIA OXIDATION

#50
20230016121
2023-01-19

Exhaust gas purification catalyst

#51
20230016066
2023-01-19

AN EMMISSION CONTROL CATALYST ARTICLE WITH ENRICHED PGM ZONE

#52
20220410133
2022-12-29

Low temperature NOadsorber with enhanced regeneration efficiency

#53
20220387983
2022-12-08

Exhaust gas purification device

#54
20220347661
2022-11-03

Zeolite with Cu and Pd co-exchanged in a composite

#55
20220341359
2022-10-27

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

#56
20220323905
2022-10-13

Exhaust treatment system for ammonia-fueled vehicles

#57
20220297094
2022-09-22

Exhaust gas purification catalyst

#58
20220243625
2022-08-04

Enhanced soot oxidation on particulate filter using ceria-based catalyst and zone coating strategy

#59
20220203345
2022-06-30

AMMONIA OXIDATION CATALYST DEVICE

#60
20220176353
2022-06-09

Exhaust gas purification catalyst

#61
20220161248
2022-05-26

Low temperature CO oxidation catalyst

#62
20220161236
2022-05-26

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

#63
20220152600
2022-05-19

Catalyst for Adsorbing Hydrocarbon and Hydrocarbon Trap Comprising the Same

#64
20220134314
2022-05-05

Tri-metal PGM catalysts for gasoline engine exhaust gas treatments

#65
20220080355
2022-03-17

Method for producing catalytically active wall flow filters

#66
20220055021
2022-02-24

LAYERED THREE-WAY CONVERSION (TWC) CATALYST AND METHOD OF MANUFACURING THE CATALYST

#67
20220010714
2022-01-13

Nitrous oxide removal catalysts for exhaust systems

#68
20210404357
2021-12-30

PARTICLE FILTER WITH A PLURALITY OF COATINGS

#69
20210346878
2021-11-11

Three-zone two-layer TWC catalyst in gasoline waste gas applications

#70
20210252456
2021-08-19

Nitrogen oxide storage catalyst

#71
20210215079
2021-07-15

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

#72
20210162344
2021-06-03

Single brick SCR/ASC/PNA/DOC close-coupled catalyst

#73
20210148273
2021-05-20

Exhaust gas cleaning catalyst

#74
20210146305
2021-05-20

Combined soot filter and urea hydrolysis

#75
20210102486
2021-04-08

Hydrogen-assisted integrated emission control system

#76
20210101139
2021-04-08

Three-zone two-layer TWC catalyst in gasoline waste gas applications

#77
20210069688
2021-03-11

Catalytic article and exhaust gas treatment systems

#78
20210001315
2021-01-07

Exhaust gas purification device

#79
20200391187
2020-12-17

Multi-region TWC for treatment of exhaust gas from gasoline engine

#80
20200340383
2020-10-29

EXHAUST GAS PURIFICATION CATALYST

#81
20200282385
2020-09-10

Lean NOtrap catalyst

#82
20200263586
2020-08-20

Catalyzed soot filter with reduced ammonia oxidation

#83
20200232366
2020-07-23

Nitrous oxide removal catalysts for exhaust systems

#84
20200222881
2020-07-16

Honeycomb catalytic converter

#85
20200215520
2020-07-09

ASC with platinum group metal in multiple layers

#86
20200206721
2020-07-02

Oxidation catalyst for a compression ignition engine

#87
20200070133
2020-03-05

Bimetallic Cu/Mn catalysts for selective catalytic reduction

#88
20200070092
2020-03-05

PGM catalyst coupled with a non-PGM catalyst with HC oxidation capability

#89
20200001280
2020-01-02

CATALYST COMBINING PLATINUM GROUP METAL WITH COPPER-ALUMINA SPINEL

#90
20190388838
2019-12-26

CATALYST COMPOSITION COMPRISING COLLOIDAL PLATINUM GROUP METAL NANOPARTICLES

#91
20190353068
2019-11-21

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

#92
20190351394
2019-11-21

Three-way catalyst

#93
20190351393
2019-11-21

Hydrocarbon trap catalyst

#94
20190345859
2019-11-14

Passive NOadsorber

#95
20190321782
2019-10-24

Method for the Cleaning of Exhaust Gas from a Compression Ignition Engine

#96
20190308173
2019-10-10

Zoned diesel oxidation catalyst

#97
20190301334
2019-10-03

Catalyst article for use in an emission treatment system

#98
20190299161
2019-10-03

Passive NOx adsorber

#99
20190291083
2019-09-26

Exhaust gas purification catalyst for internal combustion engine, and exhaust gas purifying method using exhaust gas purification catalyst

#100
20190262772
2019-08-29

Diesel oxidation catalyst and exhaust system

#101
20190255485
2019-08-22

Oxidation catalyst for treating the exhaust gas of a compression ignition engine

#102
20190201845
2019-07-04

OXIDATION CATALYST FOR A DIESEL ENGINE EXHAUST

#103
20190201844
2019-07-04

Oxidation catalyst for a diesel engine exhaust

#104
20190193057
2019-06-27

Exhaust gas purifying catalyst

#105
20190193024
2019-06-27

Oxidation catalyst for a diesel engine exhaust

#106
20190170042
2019-06-06

Selective catalytic reduction articles and systems

#107
20190168199
2019-06-06

Selective catalytic reduction articles and systems

#108
20190168198
2019-06-06

Ammonia slip catalyst designed to be first in an SCR system

#109
20190168189
2019-06-06

Catalysed substrate monolith

#110
20190162095
2019-05-30

Three-zone diesel oxidation catlayst

#111
20190151829
2019-05-23

Exhaust gas purification underfloor catalyst and catalyst system

#112
20190120104
2019-04-25

Exhaust gas purification device

#113
20190083932
2019-03-21

Exhaust gas purifying catalyst

#114
20190001268
2019-01-03

Single brick SCR/ASC/PNA/DOC close-coupled catalyst

#115
20180361360
2018-12-20

Catalyst system for lean gasoline direct injection engines

#116
20180353905
2018-12-13

Catalyzed filters with end coating for lean engine exhaust

#117
20180353903
2018-12-13

Diesel oxidation catalyst and exhaust system

#118
20180353902
2018-12-13

Diesel oxidation catalyst and exhaust system

#119
20180304244
2018-10-25

PASSIVE NOx ADSORBER

#120
20180283250
2018-10-04

Platinum group metal and base metal on a molecular sieve for PNA-SCR-ASC close-coupled system

#121
20180280945
2018-10-04

ASC with platinum group metal in multiple layers

#122
20180280879
2018-10-04

Catalyst article for use in an emission treatment system

#123
20180280877
2018-10-04

SCR with turbo and ASC/DOC close-coupled system

#124
20180280876
2018-10-04

ASC/DEC with rear-concentrated exotherm generation

#125
20180266290
2018-09-20

REAR ON-WALL DESIGN SCRF

#126
20180264446
2018-09-20

Catalytic wall-flow filter with an ammonia slip catalyst

#127
20180257062
2018-09-13

Oxidation catalyst for a compression ignition engine

#128
20180250632
2018-09-06

Method for the removal of nitrogen oxides from exhaust gas by selective catalytic reduction in presence of an SCR catalyst comprising a Fe-AEI zeolithic material essentially free of alkali metal

#129
20180243690
2018-08-30

Exhaust gas purification catalyst

#130
20180229224
2018-08-16

Exhaust gas treatment catalysts

#131
20180221860
2018-08-09

Exhaust system without a DOC having an ASC acting as a DOC in a system with an SCR catalyst before the ASC

#132
20180221855
2018-08-09

Catalyst for purifying the exhaust gases of diesel engines

#133
20180163597
2018-06-14

Exhaust gas treatment system

#134
20180141031
2018-05-24

MULTI-ZONED SYNERGIZED-PGM CATALYSTS FOR TWC APPLICATIONS

#135
20180119589
2018-05-03

Catalytic wall-flow filter with partial surface coating

#136
20180111089
2018-04-26

Multifunctional filters for diesel emission control

#137
20180111088
2018-04-26

Multifunctional filters for diesel emission control

#138
20180078898
2018-03-22

Oxidation catalyst for hydrocarbons produced by an internal combustion engine

#139
20180065085
2018-03-08

DIESEL OXIDATION CATALYST AND EXHAUST SYSTEM

#140
20180065084
2018-03-08

DIESEL OXIDATION CATALYST AND EXHAUST SYSTEM

#141
20180065083
2018-03-08

DIESEL OXIDATION CATALYST WITH NOX ADSORBER ACTIVITY

#142
20180056239
2018-03-01

OXIDATION CATALYST FOR A DIESEL ENGINE EXHAUST

#143
20180030870
2018-02-01

METHOD OF MANUFACTURING CATALYZED PARTICULATE FILTER

#144
20180023434
2018-01-25

METHOD OF MANUFACTURING CATALYZED PARTICULATE FILTER

#145
20180008964
2018-01-11

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

#146
20180001306
2018-01-04

Zoned diesel oxidation catalyst

#147
20170362984
2017-12-21

Nitrous oxide removal catalysts for exhaust systems

#148
20170320046
2017-11-09

NOadsorber catalyst

#149
20170296969
2017-10-19

Exhaust gas purification device

#150
20170296968
2017-10-19

Catalytic converter

#151
20170274358
2017-09-28

Catalysed substrate monolith

#152
20170266644
2017-09-21

Exhaust gas purification catalyst

#153
20170241313
2017-08-24

Emissions treatment system with ammonia-generating and SCR catalysts

#154
20170216822
2017-08-03

Oxidation catalyst for a compression ignition engine

#155
20170216770
2017-08-03

DIESEL OXIDATION CATALYST AND EXHAUST SYSTEM

#156
20170167335
2017-06-15

Catalyzed particulate filter

#157
20170151532
2017-06-01

Diesel oxidation catalyst having a capture region for exhaust gas impurities

#158
20170122158
2017-05-04

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

#159
20170120192
2017-05-04

Oxidation catalyst

#160
20170087541
2017-03-30

Zoned ammonia slip catalyst for use in combustion turbines

#161
20170087512
2017-03-30

Oxidation catalyst for treating the exhaust gas of a compression ignition engine

#162
20170043322
2017-02-16

NOx TRAP

#163
20160367974
2016-12-22

Exhaust system without a DOC having an ASC acting as a DOC in a system with an SCR catalyst before the ASC

#164
20160367973
2016-12-22

Ammonia slip catalyst designed to be first in an SCR system

#165
20160367941
2016-12-22

Zoned exhaust system

#166
20160348558
2016-12-01

Aftertreatment module with reduced bypass flow

#167
20160346733
2016-12-01

Method for the cleaning of exhaust gas from a compression ignition engine

#168
20160341091
2016-11-24

Emissions reduction system

#169
20160279571
2016-09-29

Exhaust gas purification material

#170
20160136618
2016-05-19

Sulfur-Resistant Synergized PGM Catalysts for Diesel Oxidation Application

#171
20160038878
2016-02-11

Zoned catalyst for treating exhaust gas

#172
20160008759
2016-01-14

Catalytic article for treating exhaust gas

#173
20160001228
2016-01-07

Perovskite with an ovlerlayer SCR component as an ammonia oxidation catalyst and a system for exhaust emission control on diesel engines

#174
20150352533
2015-12-10

Base metal activated rhodium coatings for catalysts in three-way catalyst (TWC) applications

#175
20150352532
2015-12-10

Three-way catalyst systems including Fe-activated Rh and Ba-Pd material compositions

#176
20150352531
2015-12-10

Rhodium-iron catalysts

#177
20150352494
2015-12-10

Three-way catalyst systems including Nb—Zr—Al-mixed oxide supports, Ba—Pd, and Rh—Fe material compositions

#178
20150337711
2015-11-26

Catalytic converter apparatus

#179
20150298059
2015-10-22

Catalysed soot filter for treating the exhaust gas of a compression ignition engine

#180
20150252744
2015-09-10

Exhaust gas purification apparatus

#181
20150238934
2015-08-27

Catalysed substrate monolith

#182
20150224478
2015-08-13

Oxidation catalyst for treating the exhaust gas of a compression ignition engine

#183
20150202611
2015-07-23

Diesel oxidation catalyst and exhaust system

#184
20150202600
2015-07-23

Diesel oxidation catalyst and exhaust system

#185
20150202572
2015-07-23

Diesel oxidation catalyst and exhaust system

#186
20150071839
2015-03-12

Catalyst component of a motor vehicle exhaust gas cleaning system and use of a catalyst component

#187
20150033715
2015-02-05

Zoned diesel oxidation catalyst

#188
20140356266
2014-12-04

Catalyzed filter for treating exhaust gas

#189
20140356265
2014-12-04

Catalyzed filter for treating exhaust gas

#190
20140322113
2014-10-30

Filter substrate comprising zone-coated catalyst washcoat

#191
20140322112
2014-10-30

Positive ignition engine and exhaust system comprising catalysed zone-coated filter substrate

#192
20140301907
2014-10-09

Diesel exhaust gas purification catalyst and diesel exhaust gas purification system

#193
20140274665
2014-09-18

Selective catalytic reduction catalyst system

#194
20140271429
2014-09-18

Zoned catalyst for diesel applications

#195
20140271422
2014-09-18

Selective catalytic reduction catalyst system

#196
20140248200
2014-09-04

Emissions treatment system with ammonia-generating and SCR catalysts

#197
20140186244
2014-07-03

Catalysed substrate monolith

#198
20140161693
2014-06-12

Catalysed soot filter

#199
20140099246
2014-04-10

Catalytic converter apparatus

#200
20140072491
2014-03-13

Catalytic converter apparatus

#201
20140047819
2014-02-20

Emissions treatment system with ammonia-generating and SCR catalysts

#202
20130287660
2013-10-31

Three-way catalyst having an upstream single-layer catalyst

#203
20130232953
2013-09-12

Exhaust-gas aftertreatment system and method for exhaust-gas aftertreatment

#204
20130205743
2013-08-15

Selective catalytic reduction system and process for control of NOemissions in a sulfur-containing gas stream

#205
20130149223
2013-06-13

Exhaust system for a lean-burn internal combustion engine including SCR catalyst

#206
20130149207
2013-06-13

Substrate monolith comprising SCR catalyst

#207
20130121902
2013-05-16

Mixed oxide materials for the selective catalytic reduction of nitrogen oxides in exhaust gases

#208
20130081378
2013-04-04

Exhaust purification system of internal combustion engine

#209
20130058849
2013-03-07

System for remediating emissions and method of use

#210
20130058848
2013-03-07

Three-way catalyst having a upstream multi-layer catalyst

#211
20130045148
2013-02-21

Flow modulating substrates for early light-off

#212
20130028819
2013-01-31

CATALYTIC CONVERTER APPARATUS

#213
20130028805
2013-01-31

EXHAUST GAS PURIFICATION DEVICE

#214
20120321537
2012-12-20

Coating method and device

#215
20120302439
2012-11-29

ENGINE EXHAUST CATALYSTS DOPED WITH BISMUTH OR MANGANESE

#216
20120240554
2012-09-27

Manganese-based oxides promoted lean NOtrap (LNT) catalyst

#217
20120186238
2012-07-26

Exhaust-gas purification catalytic system

#218
20120186229
2012-07-26

Zoned catalytic filters for treatment of exhaust gas

#219
20120183460
2012-07-19

Process and apparatus for purification of an exhaust gas from an internal combustion engine

#220
20120134907
2012-05-31

Coated perovskite-based catalysts, catalyst combinations and methods of treating a gas stream

#221
20120128558
2012-05-24

Three-way catalyst having an upstream multi-layer catalyst

#222
20120128557
2012-05-24

Three-way catalyst having an upstream single-layer catalyst

#223
20120040824
2012-02-16

Exhaust gas-purifying catalyst

#224
20120031085
2012-02-09

EXHAUST GAS PURIFYING CATALYST

#225
20110305614
2011-12-15

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

#226
20110271664
2011-11-10

Integrated SCR and AMOx catalyst systems

#227
20110237428
2011-09-29

EXHAUST GAS-PURIFYING CATALYST

#228
20110206584
2011-08-25

Palladium-contaning oxidation catalyst

#229
20110203264
2011-08-25

Diesel exhaust gas purification catalyst and diesel exhaust gas purification system

#230
20110173950
2011-07-21

Emissions treatment system with ammonia-generating and SCR catalysts

#231
20110165046
2011-07-07

System for remediating emissions and method of use

#232
20110165040
2011-07-07

DEVICE FOR REMEDIATING EMISSIONS AND METHOD OF MANUFACTURE

#233
20110154807
2011-06-30

NOx TRAP

#234
20110126528
2011-06-02

Exhaust gas purifying device

#235
20110116982
2011-05-19

Honeycomb structure and exhaust gas converter

#236
20110094211
2011-04-28

Exhaust gas purifying catalyst

#237
20110078997
2011-04-07

Four-way diesel catalysts and methods of use

#238
20110047992
2011-03-03

PARTIAL COATING OF PLATINUM GROUP METALS ON FILTER FOR INCREASED SOOT MASS LIMIT AND REDUCED COSTS

#239
20100307132
2010-12-09

Method for controlling exhaust gas purification system and exhaust gas purification system

#240
20100236224
2010-09-23

Emissions treatment system with lean NOx trap

#241
20100221164
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