Patents-Review.com
ClassID:

138139 ⎘

F01N2490/155 - CPC Classification

Classification description:

Structure, disposition or shape of gas-chambers; Plurality of resonance or dead chambers being disposed one after the other in flow direction

Recent Application in this class:
#1
20230184147
2023-06-15

Meta-muffler for reducing broadband noise

 #2
20220275737
2022-09-01

Noise attenuation components

 #3
20210355850
2021-11-18

Exhaust system noise reduction device of vehicle

 #4
20200102865
2020-04-02

Muffler for an internal combustion engine

 #5
20200018203
2020-01-16

HELMHOLTZ MUFFLER FOR VEHICLE

 #6
20190337377
2019-11-07

Muffler assembly including a center muffler and two satellite mufflers

 #7
20190234264
2019-08-01

Exhaust unit

 #8
20190178124
2019-06-13

Acoustically tuned muffler

 #9
20190136739
2019-05-09

Vehicle exhaust device

 #10
20190085744
2019-03-21

Exhaust device for internal combustion engine

 #11
20190078476
2019-03-14

Exhaust device for internal combustion engine

 #12
20190055866
2019-02-21

Exhaust device for internal combustion engine

 #13
20180320646
2018-11-08

Road vehicle with an internal combustion engine and provided with an exhaust noise transmission device

 #14
20180149052
2018-05-31

Acoustic attenuator for damping pressure vibrations in an exhaust system of an engine, an acoustic attenuation system using the attenuators, and method of damping pressure vibrations in an exhaust system of an engine

 #15
20170241310
2017-08-24

Acoustic device

 #16
20170122154
2017-05-04

Muffler for an exhaust system of an internal combustion engine

 #17
20170074133
2017-03-16

Exhaust gas muffler

 #18
20160281557
2016-09-29

Silencer for internal combustion engine

 #19
20160169070
2016-06-16

Exhaust pipe

 #20
20160097309
2016-04-07

Suppressor for gaseous fuel system

 #21
20160061073
2016-03-03

Exhaust chamber for saddle-riding type vehicle

 #22
20150337878
2015-11-26

Channeling fluidic waveguide surfaces and tubes

 #23
20150330283
2015-11-19

Tailor to fit muffler

 #24
20140158249
2014-06-12

Channeling gas flow tube

 #25
20130333977
2013-12-19

Lightweight construction silencer

 #26
20130280109
2013-10-24

Modular discharge silencer for vehicle-mounted compressor

 #27
20130213734
2013-08-22

Horizontally installed muffler having sporty tone

 #28
20120273297
2012-11-01

Channeling gas flow tube

 #29
20120111663
2012-05-10

Resonator for a dual-flow exhaust system

 #30
20120111662
2012-05-10

ENGINE EXHAUST

 #31
20120085589
2012-04-12

Muffler for vehicle

 #32
20110278090
2011-11-17

Exhaust system and corresponding support structure

 #33
20110192677
2011-08-11

Exhaust muffler device

 #34
20110127107
2011-06-02

Acoustic resonator and sound chamber

 #35
20110088968
2011-04-21

Sound absorber for a pipe-shaped, cavity-forming body

 #36
20100270103
2010-10-28

Exhaust muffler

 #37
20100019486
2010-01-28

MUFFLER FOR AN EXHAUST SYSTEM

 #38
20090223740
2009-09-10

Silencer of exhaust gases, in particular for motor vehicles

 #39
20090014238
2009-01-15

Muffler

 #40
20090014237
2009-01-15

Exhaust muffler having a horizontally extending sound attenuation chamber

 #41
20080251314
2008-10-16

Exhaust system for an engine and motorcycle including the exhaust system

 #42
20080110155
2008-05-15

Exhauster for motorcycle and motorcycle including exhauster

 #43
20080035418
2008-02-14

Exhaust sound and emission control systems

 #44
20070272479
2007-11-29

Exhaust system for an internal combustion engine

 #45
20070205044
2007-09-06

Silencer

 #46
20060225951
2006-10-12

Muffler with catalytic converter

 #47
20060201742
2006-09-14

Motorcycle exhaust system

 #48
20050284623
2005-12-29

Combined muffler/heat exchanger

 #49
20050279571
2005-12-22

Exhaust sound and emission control systems

 #50
20050263343
2005-12-01

Noise reducing equipment

 #51
20050258000
2005-11-24

Noise reducing equipment

 #52
20050223703
2005-10-13

Muffler with catalytic converter arrangement; and method

 #53
20050001012
2005-01-06

Technique to fill silencers