ClassID:

137966

F01N2230/04 - CPC Classification

Classification description:

Combination of silencers and other devices Catalytic converters

Recent Application in this class:
#1
20250314190
2025-10-09

HANDHELD WORK APPARATUS, AND EXHAUST GAS AFTER-TREATMENT UNIT FOR A HANDHELD WORK APPARATUS, AND EXHAUST MUFFLER

#2
20240376840
2024-11-14

EXHAUST GAS SYSTEM UNIT

#3
20220401944
2022-12-22

Method for unblocking pores in a selective catalytic reduction catalyst

#4
20220333520
2022-10-20

MUFFLER FOR STRATIFIED SCAVENGING ENGINE

#5
20220213826
2022-07-07

Exhaust aftertreatment system

#6
20210363905
2021-11-25

Methods and systems for detecting an impedance of a catalytic converter

#7
20210293166
2021-09-23

Honeycomb structure, exhaust gas purifying device and exhaust system

#8
20210199034
2021-07-01

Muffler device

#9
20210115823
2021-04-22

Two-stroke engine exhaust resonator with exhaust gas catalytic converter

#10
20200408130
2020-12-31

Exhaust gas aftertreatment device

#11
20200392885
2020-12-17

Exhaust gas heat recovery system and exhaust system

#12
20200300137
2020-09-24

Outlet for exhaust gas aftertreatment module

#13
20200263578
2020-08-20

Exhaust muffler structure

#14
20200182111
2020-06-11

Exhaust device

#15
20200173320
2020-06-04

ACOUSTIC VOLUME IN HOT-END OF EXHAUST SYSTEMS

#16
20190234264
2019-08-01

Exhaust unit

#17
20190093528
2019-03-28

Method and apparatus to enable package space reduction in a vehicle exhaust system

#18
20190085744
2019-03-21

Exhaust device for internal combustion engine

#19
20190078476
2019-03-14

Exhaust device for internal combustion engine

#20
20190055866
2019-02-21

Exhaust device for internal combustion engine

#21
20190039437
2019-02-07

Method and system for coolant temperature sensor diagnostics

#22
20190032531
2019-01-31

ENGINE AND ENGINE WORK MACHINE

#23
20180347490
2018-12-06

Engine-driven working machine

#24
20180258824
2018-09-13

Vehicle comprising a dual-branch exhaust system

#25
20180202343
2018-07-19

Exhaust gas sensor mounting structure

#26
20180163601
2018-06-14

Mixing apparatus for an exhaust gas aftertreatment system, exhaust gas aftertreatment system and internal combustion engine

#27
20180066563
2018-03-08

VORTEX FLOW APPARATUS

#28
20170314434
2017-11-02

Exhaust gas aftertreatment device and exhaust gas aftertreatment method

#29
20170268402
2017-09-21

Exhaust-gas after-treatment device

#30
20170167333
2017-06-15

Exhaust muffler for combustion engine

#31
20170159531
2017-06-08

Exhaust structure of vehicle

#32
20170122171
2017-05-04

Optimized structure for integrated catalytic muffler

#33
20170082006
2017-03-23

Silencer and catalytic converter apparatus with adjustable blocking panel

#34
20170022871
2017-01-26

Exhaust heat recovery device structure

#35
20170002712
2017-01-05

Catalyst storage case, exhaust duct, and engine

#36
20160273432
2016-09-22

Silencer and catalytic converter apparatus with adjustable blocking panel

#37
20150219041
2015-08-06

Engine

#38
20150089932
2015-04-02

Internal combustion engine

#39
20150086804
2015-03-26

Conical honeycomb body having channels extending radially outward at an angle and honeycomb body assembly

#40
20140284138
2014-09-25

Engine muffler

#41
20140251718
2014-09-11

Muffler equipped with catalytic converter

#42
20140251717
2014-09-11

Muffler equipped with catalytic converter

#43
20140250871
2014-09-11

Exhaust gas purification device for general-purpose engine

#44
20140242858
2014-08-28

Vessel propulsion apparatus and vessel

#45
20130259760
2013-10-03

Exhaust system for saddle-ride type vehicle

#46
20120224998
2012-09-06

Exhaust gas denitrifying system having noise-reduction structure

#47
20120210701
2012-08-23

Exhaust-gas muffler

#48
20120103719
2012-05-03

Exhaust filter

#49
20120000181
2012-01-05

Exhaust system having an aftertreatment module

#50
20110186376
2011-08-04

Muffler with integrated catalytic converter and polymeric muffler body

#51
20110000186
2011-01-06

Exhaust system for an internal combustion engine

#52
20100251701
2010-10-07

MUFFLER

#53
20100236226
2010-09-23

Exhaust system and method for an internal combustion engine and a generator set utilizing same

#54
20100170231
2010-07-08

Exhaust pipe for vehicle-mounted engine

#55
20100050618
2010-03-04

Exhaust gas after treatment apparatus of a motor vehicle

#56
20100018191
2010-01-28

Catalytic smog reduction

#57
20100011754
2010-01-21

Exhaust gas muffler

#58
20100011752
2010-01-21

Exhaust muffler comprising a catalytic converter

#59
20090272107
2009-11-05

Exhaust gas purification apparatus for internal combustion engine

#60
20090266644
2009-10-29

Catalytic converter muffler

#61
20090188245
2009-07-30

Insulated double-walled exhaust system component and method of making the same

#62
20090176178
2009-07-09

Combustion Apparatus With Fuel Pre-Heating

#63
20090145118
2009-06-11

Exhaust component of gas exhaust line

#64
20090114477
2009-05-07

Exhaust system for a motorcycle, and motorcycle incorporating same

#65
20090107761
2009-04-30

Exhaust sound and emission control systems

#66
20090101434
2009-04-23

Integrated modular exhaust system

#67
20090094967
2009-04-16

Second air flow control apparatus

#68
20090031717
2009-02-05

Exhaust flow distribution device

#69
20090025376
2009-01-29

Securing catalyst element in catalytic converter with bolted bar

#70
20080245604
2008-10-09

Passive secondary air muffler

#71
20080236941
2008-10-02

Exhaust system for saddle-ride type vehicle

#72
20080178582
2008-07-31

Catalytic Apparatus for Motorcycle Exhaust Pipe

#73
20080178576
2008-07-31

GPS-activated exhaust filtration monitoring and control system

#74
20080166935
2008-07-10

Exhaust system of outboard motor

#75
20080135331
2008-06-12

Exhaust muffler

#76
20080135317
2008-06-12

Straddle type vehicle

#77
20080116004
2008-05-22

Motorcycle Exhaust System and Motorcycle Provided with Exhaust System

#78
20080110693
2008-05-15

Exhaust system for motorcycle

#79
20080072576
2008-03-27

Exhaust emission purification apparatus for engine

#80
20080060870
2008-03-13

EXHAUST MUFFLER

#81
20080035418
2008-02-14

Exhaust sound and emission control systems

#82
20070256409
2007-11-08

Exhaust device and vehicle with exhaust device

#83
20070251761
2007-11-01

Exhaust device and vehicle with exhaust device

#84
20070227001
2007-10-04

Method of producing metal tubular member

#85
20070214779
2007-09-20

Catalytic converter unit and apparatus

#86
20070187174
2007-08-16

COLLAPSIBLE MUFFLER SYSTEM

#87
20070144828
2007-06-28

Inlet metallic foam support coupled to precious metal catalyst for application on 4 stroke platforms

#88
20070113540
2007-05-24

Catalyst body and an exhaust system for a small-size engine and a method for producing the catalyst body

#89
20070056275
2007-03-15

Exhaust purification device

#90
20070039317
2007-02-22

Exhaust apparatus for vehicle, and motorcycle having the same

#91
20070039316
2007-02-22

Compact combination exhaust muffler and aftertreatment element and water trap assembly

#92
20070012035
2007-01-18

Muffling apparatus having exhaust emission purifying function

#93
20060266022
2006-11-30

Exhaust system

#94
20060260867
2006-11-23

Silencer containing one or more porous bodies

#95
20060225951
2006-10-12

Muffler with catalytic converter

#96
20060218904
2006-10-05

Diesel emissions control system and method

#97
20060201742
2006-09-14

Motorcycle exhaust system

#98
20060201145
2006-09-14

Low emissions diesel system and method

#99
20060131102
2006-06-22

Exhaust muffler

#100
20060130470
2006-06-22

EGR cooling and condensate regulation system for natural gas fired co-generation unit

#101
20060123775
2006-06-15

Turbocharger-catalytic converter assembly

#102
20060081302
2006-04-20

Flexible tube

#103
20060070375
2006-04-06

Exhaust flow distribution device

#104
20060065253
2006-03-30

Method and system of purging evaporative emission control canister using heated purge air

#105
20060026953
2006-02-09

Catalyst-attached muffler for internal combustion engine

#106
20060013746
2006-01-19

Exhaust system

#107
20060010860
2006-01-19

Catalyst-attached muffler for internal combustion engine

#108
20050279571
2005-12-22

Exhaust sound and emission control systems

#109
20050252715
2005-11-17

Muffler for compact combustion engines

#110
20050224284
2005-10-13

Engine exhaust muffler with exhaust emission control function

#111
20050223703
2005-10-13

Muffler with catalytic converter arrangement; and method

#112
20050217931
2005-10-06

Method and apparatus for venting exhaust gas from an engine

#113
20050199408
2005-09-15

Arcing electron stream apparatus and method

#114
20050150719
2005-07-14

Exhaust silencer

#115
15046891
2017-04-18

Multi-muffler sound attenuator assembly