ClassID:

138134

F01N2490/08 - CPC Classification

Classification description:

Structure, disposition or shape of gas-chambers Two or more expansion chambers in series separated by apertured walls only

Recent Application in this class:
#1
20250101897
2025-03-27

SELECTIVE CATALYTIC REDUCTION (SCR) SYSTEM AND ENGINE

#2
20230399963
2023-12-14

Muffler

#3
20230184147
2023-06-15

Meta-muffler for reducing broadband noise

#4
20230160325
2023-05-25

Exhaust system tuner tube to reduce standing wave

#5
20220042441
2022-02-10

Exhaust device

#6
20210355850
2021-11-18

Exhaust system noise reduction device of vehicle

#7
20210215146
2021-07-15

Muffler, compressor assembly, and refrigerator

#8
20210156287
2021-05-27

Exhaust muffler

#9
20210140354
2021-05-13

Muffler for vehicle

#10
20210131329
2021-05-06

Systems and methods for controlling flow distribution in an aftertreatment system

#11
20200018203
2020-01-16

HELMHOLTZ MUFFLER FOR VEHICLE

#12
20190234264
2019-08-01

Exhaust unit

#13
20190226371
2019-07-25

Muffler

#14
20190195099
2019-06-27

EXHAUST DEVICE OF ENGINE

#15
20190153925
2019-05-23

Pipe and metal sheet subassembly for an exhaust treatment device

#16
20190136740
2019-05-09

Exhaust silencer device

#17
20190120115
2019-04-25

Silencer insert, silencer comprising the same and method for manufacturing a silencer insert

#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
20190024549
2019-01-24

Method for forming a collar in a muffler housing

#22
20190017426
2019-01-17

Exhaust gas mixer

#23
20180355777
2018-12-13

Exhaust gas burner assembly

#24
20180156088
2018-06-07

Exhaust component having a main casing and a partial casing, and method for manufacturing such an exhaust component

#25
20180149054
2018-05-31

Inline scrubber with dual water system

#26
20170159520
2017-06-08

Muffler and method for manufacturing same

#27
20170114698
2017-04-27

Exhaust-gas module for an internal combustion engine

#28
20170074133
2017-03-16

Exhaust gas muffler

#29
20170036165
2017-02-09

Diffuser plate for an exhaust aftertreatment module

#30
20160312674
2016-10-27

Exhaust system

#31
20160281557
2016-09-29

Silencer for internal combustion engine

#32
20160265409
2016-09-15

Device for the aftertreatment of exhaust gas from a motor vehicle

#33
20160245140
2016-08-25

Exhaust gas duct system for an internal combustion engine

#34
20160053659
2016-02-25

Exhaust device of motorcycle

#35
20150377101
2015-12-31

Method of and apparatus for exhausting internal combustion engines

#36
20150361852
2015-12-17

Exhaust gas purification device

#37
20150330422
2015-11-19

Vortex flow apparatus

#38
20150255054
2015-09-10

Active design of exhaust sounds

#39
20150240692
2015-08-27

Exhaust aftertreatment device

#40
20150110681
2015-04-23

Catalytic converter device with injection section

#41
20150004015
2015-01-01

Sound absorber for refrigerant compressor

#42
20140291067
2014-10-02

Exhaust silencing device

#43
20140251718
2014-09-11

Muffler equipped with catalytic converter

#44
20140251717
2014-09-11

Muffler equipped with catalytic converter

#45
20140054101
2014-02-27

Muffler assembly with siphon tube

#46
20130333977
2013-12-19

Lightweight construction silencer

#47
20130247849
2013-09-26

Shunt pulsation trap for positive displacement (PD) internal combustion engines (ICE)

#48
20130220732
2013-08-29

Muffler with dual exhaust gas discharge pipe for vehicle

#49
20130180233
2013-07-18

Exhaust gas treatment device

#50
20130167506
2013-07-04

Method of and apparatus for exhausting internal combustion engines

#51
20120210701
2012-08-23

Exhaust-gas muffler

#52
20120138384
2012-06-07

Exhaust apparatus for an internal combustion engine

#53
20120012419
2012-01-19

Exhaust device

#54
20110297479
2011-12-08

Diffuser muffler

#55
20110203692
2011-08-25

Exhaust gas treatment device

#56
20110192677
2011-08-11

Exhaust muffler device

#57
20100126799
2010-05-27

Muffler and engine exhaust apparatus

#58
20100011754
2010-01-21

Exhaust gas muffler

#59
20100006370
2010-01-14

Sound-attenuating muffler having reduced back pressure

#60
20090308687
2009-12-17

Muffler for vehicle

#61
20090301808
2009-12-10

Muffler structure for vehicle

#62
20090223740
2009-09-10

Silencer of exhaust gases, in particular for motor vehicles

#63
20080307778
2008-12-18

Fixing Device of Catalyst Substrate

#64
20080251314
2008-10-16

Exhaust system for an engine and motorcycle including the exhaust system

#65
20080148722
2008-06-26

Method of and apparatus for exhausting internal combustion engines

#66
20080141666
2008-06-19

Exhaust gas cooling system for engine

#67
20080121460
2008-05-29

Sheet-metal-type part

#68
20080116004
2008-05-22

Motorcycle Exhaust System and Motorcycle Provided with Exhaust System

#69
20080110693
2008-05-15

Exhaust system for motorcycle

#70
20080110155
2008-05-15

Exhauster for motorcycle and motorcycle including exhauster

#71
20080023265
2008-01-31

Combination Silencer

#72
20080010979
2008-01-17

Exhaust Gas Purification Apparatus for Engine

#73
20070012511
2007-01-18

Vortex muffler

#74
20060231330
2006-10-19

Spun extrusion side entry muffler

#75
20060225951
2006-10-12

Muffler with catalytic converter

#76
20060101813
2006-05-18

Muffler device with catalysts for improving purifying exhaust gas of nitrogen oxides within a motorcycle exhaust pipe

#77
20060040158
2006-02-23

Fuel cell discharge-gas processing device

#78
20050284623
2005-12-29

Combined muffler/heat exchanger

#79
20050224284
2005-10-13

Engine exhaust muffler with exhaust emission control function

#80
20050150716
2005-07-14

Exhaust apparatus for small-sized engine

#81
20050103003
2005-05-19

Exhaust gas muffler

#82
20050039447
2005-02-24

Structure of engine exhauster

#83
18828152
2025-07-08

Inlet assembly for aftertreatment system