ClassID:

137786

F01N3/022 - CPC Classification

Classification description:

Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous

Sub-classes:
Recent Application in this class:
#1
20260102739
2026-04-16

CATALYST FOR THE TREATMENT OF AN EXHAUST GAS STREAM CONTAINING ONE OR MORE OF FORMALDEHYDE, NITROGEN OXIDE (NO), AND HYDROCARBONS COMPRISING MN SUPPORTED ON A CUO-AL2O3 MIXED OXIDE

#2
20260084140
2026-03-26

METHOD FOR THE MANUFACTURE OF A CATALYTIC GASOLINE PARTICULATE FILTER

#3
20250297564
2025-09-25

SYSTEMS AND METHODS FOR MEASURING EXHAUST GAS SPECIES AND CATALYST NOX STORAGE FOR CATALYST-RELATED CONTROLS AND DIAGNOSTICS

#4
20250288983
2025-09-18

APPARATUS AND METHOD FOR COATING SUBSTRATES WITH WASHCOATS

#5
20240077009
2024-03-07

SYSTEMS AND METHODS FOR MEASURING EXHAUST GAS SPECIES AND SCR CATALYST NOX STORAGE FOR SCR-RELATED CONTROLS AND DIAGNOSTICS

#6
20240018891
2024-01-18

Exhaust gas purification system

#7
20240011420
2024-01-11

FINE PARTICLE FILTER, METHOD FOR REMOVING PARTICULATE MATTER FROM EXHAUST GAS OF INTERNAL COMBUSTION ENGINE, AND METHOD FOR PRODUCING FINE PARTICLE FILTER

#8
20230399972
2023-12-14

ENGINE SYSTEM COMPRISING A HYDROGEN COMBUSTION ENGINE

#9
20230356205
2023-11-09

EXHAUST GAS-PURIFYING CATALYST

#10
20230050366
2023-02-16

Exhaust gas purification system

#11
20230040546
2023-02-09

Method and system for preventing injury from hot exhaust gas

#12
20230031827
2023-02-02

Near-zero emitting diesel-electric locomotive using a high-speed diesel engine

#13
20220410136
2022-12-29

Honeycomb structure, exhaust gas purification catalyst, and exhaust gas purification system

#14
20220364487
2022-11-17

Exhaust gas cleaning system and method for cleaning exhaust gas and use of exhaust gas cleaning system

#15
20220316372
2022-10-06

Particulate filter

#16
20220243625
2022-08-04

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

#17
20220235691
2022-07-28

Method for replacing an exhaust aftertreatment component

#18
20220220878
2022-07-14

Crossflow PNA-SCR aftertreatment device

#19
20220213822
2022-07-07

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

#20
20220193651
2022-06-23

APPARATUS AND METHOD FOR COATING SUBSTRATES WITH WASHCOATS

#21
20220193649
2022-06-23

Exhaust purification filter

#22
20220186644
2022-06-16

Emissions control device comprising a threaded disassembling element

#23
20220184594
2022-06-16

Method for coating exhaust gas purification catalyst filter with fixed amount of catalyst slurry

#24
20220176355
2022-06-09

Catalytically active particulate filter

#25
20220170397
2022-06-02

Exhaust purification filter

#26
20220154615
2022-05-19

Systems and methods for measuring exhaust gas species and SCR catalyst NOx storage for SCR-related controls and diagnostics

#27
20220154611
2022-05-19

Selective catalytic reduction catalyst on a filter

#28
20220154610
2022-05-19

Internal combustion engine exhaust modification system

#29
20220064017
2022-03-03

Nanocrystal-sized cerium-zirconium-aluminum oxide material and method of making the same

#30
20220047982
2022-02-17

Exhaust gas purification filter

#31
20220034245
2022-02-03

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

#32
20210404357
2021-12-30

PARTICLE FILTER WITH A PLURALITY OF COATINGS

#33
20210404356
2021-12-30

Asymmetrical channel structure of particulate trap filter body

#34
20210379523
2021-12-09

Porous composite

#35
20210370275
2021-12-02

Diesel Particulate Filtration (DPF) System

#36
20210331111
2021-10-28

Particulate filter and manufacturing method for same

#37
20210299641
2021-09-30

Porous ceramic structure and method of producing porous ceramic structure

#38
20210299640
2021-09-30

Porous ceramic structure and method of producing porous ceramic structure

#39
20210293168
2021-09-23

Four-way conversion catalyst for the treatment of an exhaust gas stream

#40
20210277815
2021-09-09

Crossflow PNA-SCR aftertreatment device

#41
20210268424
2021-09-02

Honeycomb filter

#42
20210262376
2021-08-26

System and method for detecting defects in a honeycomb body

#43
20210260573
2021-08-26

PARTICULATE FILTERS

#44
20210220811
2021-07-22

METHOD OF PRODUCING CYLINDRICAL FILM-COATED HONEYCOMB STRUCTURE AND METHOD OF PRODUCING CATALYST

#45
20210189928
2021-06-24

Process for commissioning an exhaust particulate filter

#46
20210172365
2021-06-10

PARTICULATE MATTER MEASURING DEVICE COMPONENT

#47
20210140355
2021-05-13

EXHAUST TAIL PIPE INSERT/EMISSIONS FILTER

#48
20210106981
2021-04-15

Diesel particulate filtration (DPF) system

#49
20210060466
2021-03-04

Ceramic honeycomb filter

#50
20210053005
2021-02-25

Porous composite

#51
20200392881
2020-12-17

Exhaust gas purification system

#52
20200370452
2020-11-26

Gasoline particulate filters with high initial filtering efficiency and methods of making same

#53
20200362737
2020-11-19

Method for operating a particulate filter in a vehicle, and particulate filter for an internal combustion engine in a vehicle

#54
20200353813
2020-11-12

Exhaust gas purification device

#55
20200353455
2020-11-12

Honeycomb structure and die

#56
20200353410
2020-11-12

Four-way conversion catalyst having improved filter properties

#57
20200309003
2020-10-01

Method for regenerating exhaust gas filter and exhaust gas filter impregnation system

#58
20200248600
2020-08-06

Exhaust tail pipe/emissions filter

#59
20200200128
2020-06-25

Work vehicle

#60
20200191030
2020-06-18

Gasoline particulate filter

#61
20200182120
2020-06-11

RETAINING MATERIAL FOR POLLUTION CONTROL ELEMENT, METHOD FOR MANUFACTURING THE SAME, AND POLLUTION CONTROL DEVICE

#62
20200049042
2020-02-13

Exhaust gas purification catalyst and exhaust gas purification method using the same

#63
20200049041
2020-02-13

Exhaust gas purification catalyst and exhaust gas purification method using the same

#64
20200003094
2020-01-02

Honeycomb structure body and exhaust gas purification filter

#65
20190331012
2019-10-31

On-board CO2 capture and storage with metal organic framework

#66
20190316502
2019-10-17

Air cleaner for vehicle

#67
20190301331
2019-10-03

Heat generation system, exhaust gas purification device, and method for regenerating honeycomb structure

#68
20190271246
2019-09-05

Exhaust purification system of internal combustion engine

#69
20190265172
2019-08-29

Ceramic body defect inspecting apparatus and defect inspecting method

#70
20190264640
2019-08-29

SIEVE SEAL AND METHOD FOR OPERATION THEREOF

#71
20190262758
2019-08-29

Filter And Method For Producing A Filter

#72
20190234270
2019-08-01

Substrate shape, geometry, positioning, and/or cell density to improve aftertreatment performance

#73
20190224606
2019-07-25

Honeycomb structural body, method for manufacturing the same, and exhaust gas purification filter

#74
20190193057
2019-06-27

Exhaust gas purifying catalyst

#75
20190160413
2019-05-30

Honeycomb filter

#76
20190128159
2019-05-02

Particulate matter (PM) sensor for detecting quantity of PM in exhaust gas from e.g. diesel engine

#77
20190120104
2019-04-25

Exhaust gas purification device

#78
20190072474
2019-03-07

PARTICULATE MATTER SENSOR

#79
20190048771
2019-02-14

Particulate filters

#80
20190010842
2019-01-10

Emissions control substrate

#81
20180347425
2018-12-06

Exhaust purification system of internal combustion engine

#82
20180333698
2018-11-22

Method of preparation of a monilithic catalyst for selective catalytic reduction of nitrogen oxides

#83
20180313242
2018-11-01

EXHAUST TAIL PIPE/EMISSIONS FILTER

#84
20180127321
2018-05-10

CERAMIC COMPOSITIONS

#85
20180126369
2018-05-10

Multistage body having a plurality of flow channels

#86
20180080355
2018-03-22

Exhaust gas purification filter

#87
20180038817
2018-02-08

SENSOR

#88
20180003094
2018-01-04

Exhaust gas purifying device of internal-combustion engine, and method of manufacturing same

#89
20180001308
2018-01-04

Exhaust gas purification apparatus

#90
20170354911
2017-12-14

Exhaust gas filter

#91
20170341004
2017-11-30

FILTER ELEMENT AND METHOD FOR MAKING THE SAME

#92
20170335738
2017-11-23

Dual catalytic converter exhaust-gas aftertreatment arrangement

#93
20170328248
2017-11-16

Abnormality diagnosis device

#94
20170326539
2017-11-16

Honeycomb structure

#95
20170306823
2017-10-26

Exhaust gas purification catalyst

#96
20170304762
2017-10-26

Ceramic honeycomb structure

#97
20170287155
2017-10-05

Porous body, honeycomb filter, microstructure analysis method, program for same, and microstructure analyzer

#98
20170248060
2017-08-31

Exhaust purification system for internal combustion engine

#99
20170248051
2017-08-31

On-board COcapture and storage with metal organic framework

#100
20170197169
2017-07-13

Honeycomb filter

#101
20170197168
2017-07-13

Honeycomb filter

#102
20170165658
2017-06-15

Coating method

#103
20170157562
2017-06-08

Catalyzed particulate filter

#104
20170122160
2017-05-04

Muffler integrated type gasoline particulate filter

#105
20170096925
2017-04-06

Retaining material for pollution control element, method for manufacturing the same, and pollution control device

#106
20150322832
2015-11-12

Exhaust purification filter

#107
20150322566
2015-11-12

CVD system having particle separator

#108
20150308311
2015-10-29

Substrate with sinuous web and particulate filter incorporating the same

#109
20150292387
2015-10-15

Exhaust purification device for internal combustion engine

#110
20150159534
2015-06-11

Adhesive particle filter/trap for pressurized heat engines

#111
20150059321
2015-03-05

Particulate filter

#112
20140370233
2014-12-18

Porous material and honeycomb structure

#113
20140366506
2014-12-18

System and method for a movable exhaust aftertreatment device in an internal combustion engine

#114
20140298779
2014-10-09

Wall flow type exhaust gas purification filter

#115
20140216016
2014-08-07

Exhaust purification system for internal combustion engine

#116
20140178260
2014-06-26

Conical substrate

#117
20140170032
2014-06-19

Metal filter for purifying exhaust gas from ship, and preparation method thereof

#118
20140140916
2014-05-22

System for producing carbon nanotubes from combustion engine exhausts

#119
20140120001
2014-05-01

Particulate filter

#120
20140116034
2014-05-01

Exhaust purification system for internal combustion engine

#121
20140116033
2014-05-01

Exhaust purification system for internal combustion engine

#122
20140109767
2014-04-24

Method of removing ash from particulate filter

#123
20140004013
2014-01-02

Multifunctional exhaust gas purifying filter, and exhaust gas purifying apparatus using the same

#124
20130255854
2013-10-03

Manufacturing method of honeycomb structure

#125
20130247549
2013-09-26

Cleanable particle separator and motor vehicle having at least one particle separator

#126
20130111860
2013-05-09

Device for particle separation in an exhaust-gas recirculation system and motor vehicle having the device

#127
20130022531
2013-01-24

Filter and process of use to produce carbon nanotubes from automotive exhausts

#128
20120216511
2012-08-30

INSTANTANEOUS NEUTRALIZATION AND PURIFICATION DEVICE FOR SMOKE AND EXHAUST GAS DISCHARGED FROM AUTOMOBILE

#129
20120210702
2012-08-23

CATALYTIC CONVERTER DEVICE

#130
20120186205
2012-07-26

Hollow body for capturing particles in an exhaust gas line, exhaust-gas treatment device and motor vehicle

#131
20120058019
2012-03-08

Honeycomb filter

#132
20120006006
2012-01-12

Exhaust Gas Treatment Device and Method for Operating an Exhaust Gas Treatment Device

#133
20110247310
2011-10-13

EXHAUST GAS TREATMENT DEVICE FOR AN EXHAUST GAS SYSTEM AND METHOD OF MANUFACTURING AN EXHAUST GAS TREATMENT DEVICE

#134
20110113755
2011-05-19

Filter device for filtering automobile exhaust gas

#135
20110027136
2011-02-03

Particulate filtration device

#136
20110000198
2011-01-06

FILTER AND PROCESS OF USE TO PRODUCE CARBON NANOTUBES FROM AUTOMOTIVE EXHAUSTS

#137
20100300082
2010-12-02

DIESEL PARTICULATE FILTER

#138
20100275585
2010-11-04

Soot particle filter

#139
20100269491
2010-10-28

Partial filter substrates containing SCR catalysts and methods and emissions treatment systems

#140
20100266461
2010-10-21

Method For Reducing Pressure Drop Through Filters, And Filter Exhibiting Reduced Pressure Drop

#141
20100202934
2010-08-12

EXHAUST GAS PURIFICATION DEVICE FOR AN EXHAUST SYSTEM

#142
20100132343
2010-06-03

Filter device for reducing automobile exhaust fume

#143
20100003171
2010-01-07

Gas treatment device

#144
20090226348
2009-09-10

Honeycomb filter and exhaust gas purification system

#145
20090211214
2009-08-27

Filter plate for a particle filter

#146
20090139190
2009-06-04

Bypass flow filter with improved filter efficiency and exhaust system and vehicle having the filter

#147
20090105069
2009-04-23

Structure having strong contact with solid particles, substrate having strong contact with solid particles, and manufacturing methods thereof

#148
20090071123
2009-03-19

PARTICLE FILTER ASSEMBLY

#149
20080314032
2008-12-25

Segmented Particulate Filter For An Engine Exhaust Stream

#150
20080276585
2008-11-13

Filtration plate for a particle filter

#151
20080274020
2008-11-06

Carrier for exhaust-gas purification and exhaust-gas purifier having the carrier

#152
20080209872
2008-09-04

Filtering device for diesel engine exhaust gas

#153
20080196370
2008-08-21

Pleated diesel particulate filter assembly

#154
20080184698
2008-08-07

Exhaust Emission Control Device

#155
20080184686
2008-08-07

Ceramic filters formed from photocurable pre-ceramic polymers

#156
20080168754
2008-07-17

Exhaust Gas Particulate Filter

#157
20080148945
2008-06-26

Filter layer for an, in particular conical, honeycomb body for exhaust gas treatment, method for manufacturing the filter layer, honeycomb body and exhaust gas purification device

#158
20080127993
2008-06-05

Filter Regeneration Using Plasma

#159
20080110143
2008-05-15

Filters with controlled submicron porosity

#160
20080093163
2008-04-24

Silencer and Open-Structured Catalyser

#161
20080087101
2008-04-17

PARTICULATE MATTER SENSOR

#162
20080000206
2008-01-03

Filter system

#163
20070241033
2007-10-18

Hydrocarbon processing devices and systems for engines and combustion equipment

#164
20070238377
2007-10-11

Filter for exhaust gas from diesel engine and equipment

#165
20070214759
2007-09-20

Narrow pore size distribution aluminum titanate body and method for making same

#166
20070203315
2007-08-30

Porous mullite bodies and methods of forming them

#167
20070148402
2007-06-28

Honeycomb structured body

#168
20070128089
2007-06-07

Particulate matter-containing exhaust emission controlling filter, exhaust emission controlling method and device

#169
20070107392
2007-05-17

Diesel exhaust filtering apparatus

#170
20070006578
2007-01-11

Apparatus for removing particulate matter

#171
20070000218
2007-01-04

Exhaust gas purification for internal combustion engines and method for operating the same

#172
20060272319
2006-12-07

Segregated catalyzed metallic wire filter for diesel soot filtration

#173
20060254266
2006-11-16

Emissions control

#174
20060254263
2006-11-16

Flow reversal in exhaust system including filter

#175
20060197265
2006-09-07

Porous mullite bodies and methods of forming them

#176
20060185352
2006-08-24

Exhaust system for a lean-burn ic engine

#177
20060153748
2006-07-13

Exhaust gas after treatment system, especially for a diesel engine

#178
20060078479
2006-04-13

Filter assembly for an exhaust treatment device

#179
20060021335
2006-02-02

Exhaust treatment system having particulate filters

#180
20060021309
2006-02-02

Narrow pore size distribution aluminum titanate body and method for making same

#181
20060021308
2006-02-02

Mullite-aluminum titanate body and method for making same

#182
20060021307
2006-02-02

Particulate trap filter element

#183
20060010861
2006-01-19

Cleanable device for depollution of engine exhaust gases

#184
20050284117
2005-12-29

Particle filter

#185
20050252846
2005-11-17

Method for joining thin sheet-type sintered metal elements, and filter body produced therefrom

#186
20050191201
2005-09-01

Methods of producing cermet materials and methods of utilizing same

#187
20050166577
2005-08-04

Emissions control

#188
20050164139
2005-07-28

Reduced-emissions combustion utilizing multiple-component metallic combustion catalyst and lightly catalyzed diesel particulate filter

#189
20050147541
2005-07-07

Diesel exhaust gas purifying filter

#190
20050115224
2005-06-02

Exhaust emission control device and casing structure of the control device

#191
20050079111
2005-04-14

Exhaust gas cleaning apparatus

#192
20050066640
2005-03-31

Diesel soot filter

#193
20050056008
2005-03-17

Particulate removing apparatus and diesel engine vehicle equipped with same

#194
20050005598
2005-01-13

Filter body for particle filter

#195
20050005595
2005-01-13

Method and device for treatment of a gas flow