ClassID:

30450

B01D2255/911 - CPC Classification

Classification description:

Catalysts; Physical characteristics of catalysts NH-storage component incorporated in the catalyst

Recent Application in this class:
#1
20260063060
2026-03-05

SYSTEMS AND METHODS FOR MANAGING AMMONIA SLIP IN AN AFTERTREATMENT SYSTEM

#2
20250381524
2025-12-18

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

#3
20250312739
2025-10-09

EXHAUST GAS SYSTEM FOR PREDOMINANTLY STOICHIOMETRICALLY OPERATED INTERNAL COMBUSTION ENGINES, COMPRISING A CATALYST FOR REDUCING AMMONIA EMISSIONS

#4
20250288956
2025-09-18

Aftertreatment for Ammonia Fuelled Engine

#5
20240123403
2024-04-18

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

#6
20230226488
2023-07-20

EXHAUST GAS TREATMENT SYSTEM

#7
20230219069
2023-07-13

Metal oxide-based SCR catalyst composition

#8
20230141207
2023-05-11

High ammonia storage capacity SCR catalysts

#9
20230109112
2023-04-06

EATS for converting NOx emissions in exhaust gases from an engine

#10
20230108972
2023-04-06

Method for preconditioning at least a part of an engine system of a vehicle

#11
20220323905
2022-10-13

Exhaust treatment system for ammonia-fueled vehicles

#12
20220170400
2022-06-02

Methods and system for controlling selective catalytic reductant catalyst of a gasoline engine

#13
20220097001
2022-03-31

MIXING MEMBER, EXHAUST PURIFICATION DEVICE AND VEHICLE

#14
20220040637
2022-02-10

Exhaust gas treatment system

#15
20210379530
2021-12-09

Selective catalytic reduction catalyst on a filter substrate

#16
20210102486
2021-04-08

Hydrogen-assisted integrated emission control system

#17
20200248608
2020-08-06

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

#18
20200248607
2020-08-06

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

#19
20200055035
2020-02-20

EXHAUST GAS TREATMENT CATALYST FOR ABATEMENT OF NITROGEN OXIDES

#20
20200018216
2020-01-16

Exhaust gas purification system

#21
20190321810
2019-10-24

AEI type zeolite, method for producing same, and uses thereof

#22
20190301334
2019-10-03

Catalyst article for use in an emission treatment system

#23
20190299160
2019-10-03

NH3 OVERDOSING-TOLERANT SCR CATALYST

#24
20190242288
2019-08-08

Radio Frequency System and Method for Monitoring Engine-Out Exhaust Constituents

#25
20190162094
2019-05-30

Control reset and diagnostic to maintain tailpipe compliance

#26
20180347423
2018-12-06

Exhaust gas after-treatment unit for an internal combustion engine and procedure for using a drive mechanism with such an exhaust gas after-treatment unit

#27
20180280948
2018-10-04

Selective catalytic reduction catalyst

#28
20180280879
2018-10-04

Catalyst article for use in an emission treatment system

#29
20180147530
2018-05-31

NHoverdosing-tolerant SCR catalyst

#30
20180117573
2018-05-03

LTA catalysts having extra-framework iron and/or manganese for treating exhaust gas

#31
20180038302
2018-02-08

Exhaust emission control system of engine

#32
20180038301
2018-02-08

Exhaust emission control system of engine

#33
20170368541
2017-12-28

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

#34
20170321582
2017-11-09

Control device and control method for reducing agent injection device, and reducing agent injection device

#35
20170259250
2017-09-14

AEI type zeolite, method for producing same, and uses thereof

#36
20170211453
2017-07-27

Radio frequency system and method for monitoring engine-out exhaust constituents

#37
20170189854
2017-07-06

Ammonia slip catalyst

#38
20170152784
2017-06-01

Fault diagnosis apparatus for exhaust gas purification system

#39
20170145893
2017-05-25

Ammonia adsorption amount estimation apparatus, ammonia adsorption amount estimation method, and exhaust gas purification system for internal combustion engine

#40
20170122175
2017-05-04

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

#41
20170056823
2017-03-02

Zeolite and redox oxide combined catalyst body

#42
20170014766
2017-01-19

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

#43
20160367975
2016-12-22

AMMONIA SLIP CATALYST WITH LOW N2O FORMATION

#44
20160367938
2016-12-22

Single or dual layer ammonia slip catalyst

#45
20160367937
2016-12-22

NH3 overdosing-tolerant SCR catalyst

#46
20160356194
2016-12-08

Method and control assembly for operating an exhaust gas system

#47
20160346732
2016-12-01

Method of controlling a multi selective catalytic reduction system

#48
20160312678
2016-10-27

Advanced exhaust aftertreatment system architecture

#49
20160303512
2016-10-20

Exhaust gas purification apparatus for internal combustion engine

#50
20160279574
2016-09-29

SYSTEMS AND METHODS FOR MONITORING THE HEALTH OF A SELECTIVE CATALYTIC REDUCTION CATALYST

#51
20160279571
2016-09-29

Exhaust gas purification material

#52
20160045869
2016-02-18

Method of controlling ammonia levels in catalytic units

#53
20160038878
2016-02-11

Zoned catalyst for treating exhaust gas

#54
20160008761
2016-01-14

SCR catalytic converter having improved NOx conversion

#55
20150367337
2015-12-24

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

#56
20150367336
2015-12-24

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

#57
20150361848
2015-12-17

Exhaust aftertreatment system for a compression-ignition engine

#58
20150290587
2015-10-15

Exhaust gas purification apparatus for internal combustion engine

#59
20150139874
2015-05-21

Lean NOx trap diesel oxidation catalyst with hydrocarbon storage function

#60
20140314645
2014-10-23

SCR catalyst ammonia surface coverage estimation and control

#61
20140301923
2014-10-09

Selective catalytic reduction catalyst system

#62
20140274665
2014-09-18

Selective catalytic reduction catalyst system

#63
20140271422
2014-09-18

Selective catalytic reduction catalyst system

#64
20130255229
2013-10-03

Method for use in conjunction with an exhaust-gas aftertreatment system

#65
20130052107
2013-02-28

Exhaust gas purification apparatus of an internal combustion engine

#66
20130017136
2013-01-17

Exhaust gas control apparatus and method for internal combustion engine

#67
20130011313
2013-01-10

Exhaust gas aftertreatment installation and method

#68
20120321537
2012-12-20

Coating method and device

#69
20120214663
2012-08-23

LNT and SCR catalysts for combined LNT-SCR applications

#70
20120210696
2012-08-23

Low temperature NOx storage system for lean exhaust aftertreatment

#71
20120079812
2012-04-05

EXHAUST GAS PURIFICATION APPARATUS OF ENGINE AND EXHAUST GAS PURIFICATION METHOD OF ENGINE

#72
20120073266
2012-03-29

Process for the Removal of Harmful Substances from Exhaust Gases of Combustion Engines and Catalyst for Carrying Out Said Process

#73
20120060472
2012-03-15

Catalyst materials for NOoxidation in an exhaust aftertreatment system that uses passive ammonia SCR

#74
20120058034
2012-03-08

Zeolite and redox oxide combined catalyst body

#75
20110287928
2011-11-24

Low level noble metal-supporting three-way catalyst

#76
20110262329
2011-10-27

SCR catalyst ammonia surface coverage estimation and control

#77
20110185704
2011-08-04

Device and method for purifying exhaust gases for an internal combustion engine

#78
20110146243
2011-06-23

Exhaust gas aftertreatment system for a diesel engine and method of increasing a temperature of an SCR catalyst to reduce NOin exhaust gases

#79
20110052454
2011-03-03

EXHAUST GAS PURIFICATION APPARATUS

#80
20110005204
2011-01-13

Exhaust gas aftertreatment installation and method

#81
20110003682
2011-01-06

Methods and formulations for enhancing NHadsorption capacity of selective catalytic reduction catalysts

#82
20100224142
2010-09-09

Method of exhaust cleaning for internal combustion engine and exhaust cleaner

#83
20100223908
2010-09-09

Ammonia (NH) storage control system and method based on a nitrogen oxide(NO) sensor

#84
20100209327
2010-08-19

Structured SCR catalyst for the reduction of nitrogen oxides in the exhaust gas from lean-burn engines using ammonia as reducing agent

#85
20100204036
2010-08-12

NOx purifying catalyst

#86
20100196221
2010-08-05

Selective catalytic reduction type catalyst, and exhaust gas purification equipment and purifying process of exhaust gas using the same

#87
20100107606
2010-05-06

Passive ammonia-selective catalytic reduction for NOx control in internal combustion engines

#88
20100077738
2010-04-01

System for reducing NOx in exhaust

#89
20100071347
2010-03-25

Exhaust purification device of an internal combustion engine

#90
20090246103
2009-10-01

HONEYCOMB STRUCTURE AND METHOD FOR MANUFACTURING THE SAME

#91
20090025375
2009-01-29

Catalyst composition and structure for a diesel-fueled autothermal reformer placed in and exhaust stream

#92
20080168763
2008-07-17

Optimized rhodium usage in LNT SCR system

#93
20080034740
2008-02-14

Process for the removal of harmful substances from exhaust gases of combustion engines and catalyst for carrying out said process

#94
20070277507
2007-12-06

Enhanced hybrid de-NOx system

#95
20070175208
2007-08-02

Exhaust gas aftertreatment installation and method

#96
20070099795
2007-05-03

Methods and formulations for enhancing NH3 adsorption capacity of selective catalytic reduction catalysts

#97
20070079602
2007-04-12

Thermal management of hybrid LNT/SCR aftertreatment during desulfation

#98
20070033928
2007-02-15

Hybrid catalyst system for exhaust emissions reduction

#99
20070012032
2007-01-18

Hybrid system comprising HC-SCR, NOx-trapping, and NH3-SCR for exhaust emission reduction

#100
20070006573
2007-01-11

Thermal management of hybrid LNT/SCR aftertreatment during desulfation

#101
20060254258
2006-11-16

Exhaust system for lean burn IC engines

#102
20060153761
2006-07-13

Exhaust gas aftertreatment installation and method

#103
20060035782
2006-02-16

PROCESSING METHODS AND FORMULATIONS TO ENHANCE STABILITY OF LEAN-NOx-TRAP CATALYSTS BASED ON ALKALI- AND ALKALINE-EARTH-METAL COMPOUNDS

#104
20060010859
2006-01-19

Valveless dual leg exhaust aftertreatment system

#105
20060010857
2006-01-19

Hybrid catalyst system for exhaust emissions reduction

#106
20050232826
2005-10-20

Exhaust treatment devices

#107
17651700
2023-06-27

Device for the reduction of ammonia and nitrogen oxides emissions

#108
16263593
2020-06-30

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

#109
15935422
2019-08-13

Ammonia generation and storage systems and methods