Patents-Review.com
ClassID:

137746 ⎘

F01N1/026 - CPC Classification

Classification description:

Silencing apparatus characterised by method of silencing by using resonance Annular resonance chambers arranged concentrically to an exhaust passage and communicating with it, e.g. via at least one opening in the exhaust passage

Recent Application in this class:
#1
20260092544
2026-04-02

Tunable Exhaust System

 #2
20250264045
2025-08-21

EXHAUST PORT FOR A PNEUMATIC VALVE OR AN AIR VALVE OF A VEHICLE

 #3
20250067201
2025-02-27

Dual Mode Muffler

 #4
20230102336
2023-03-30

Space-saving broadband resonator having a resonator insert

 #5
20210301694
2021-09-30

EXHAUST LINE FOR A VEHICLE AND VEHICLE WITH AN EXHAUST LINE

 #6
20210301693
2021-09-30

Exhaust muffler

 #7
20210222594
2021-07-22

Tunable Exhaust System

 #8
20210199035
2021-07-01

Muffler for engine

 #9
20210199034
2021-07-01

Muffler device

 #10
20210148262
2021-05-20

Multi-mode exhaust muffler

 #11
20210115823
2021-04-22

Two-stroke engine exhaust resonator with exhaust gas catalytic converter

 #12
20210115822
2021-04-22

Muffler

 #13
20210025300
2021-01-28

Customized Muffler

 #14
20210003054
2021-01-07

Tuning a sound profile of a muffler

 #15
20210003053
2021-01-07

Muffler structure

 #16
20200392880
2020-12-17

Vehicle exhaust system

 #17
20200284174
2020-09-10

Acoustic absorber for fan noise reduction

 #18
20200232357
2020-07-23

Acoustic damper for gas turbine combustors with orthogonal slots

 #19
20200123947
2020-04-23

Muffler structure of saddle-type vehicle

 #20
20200088078
2020-03-19

Exhaust device with noise suppression system

 #21
20190249588
2019-08-15

Muffler unit

 #22
20190234263
2019-08-01

Muffler

 #23
20190136739
2019-05-09

Vehicle exhaust device

 #24
20190093565
2019-03-28

Tunable resonator

 #25
20190085744
2019-03-21

Exhaust device for internal combustion engine

 #26
20190078476
2019-03-14

Exhaust device for internal combustion engine

 #27
20190055884
2019-02-21

Inverter generator

 #28
20190055866
2019-02-21

Exhaust device for internal combustion engine

 #29
20180340472
2018-11-29

Tunable resonator

 #30
20180299057
2018-10-18

Conduit connection assembly

 #31
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

 #32
20180142588
2018-05-24

Silencer and vehicle engine including same

 #33
20180051610
2018-02-22

Alignment system for slotted snap-action valve assembly for exhaust system

 #34
20180051609
2018-02-22

Slotted snap-action valve assembly for exhaust system

 #35
20180051608
2018-02-22

Structure of muffler

 #36
20170356585
2017-12-14

Damping device

 #37
20170335741
2017-11-23

Muffler for an exhaust system of an internal combustion engine, especially for motor vehicles with hybrid drive

 #38
20170276043
2017-09-28

Exhaust after-treatment assembly for engine system

 #39
20170241310
2017-08-24

Acoustic device

 #40
20170167333
2017-06-15

Exhaust muffler for combustion engine

 #41
20170167332
2017-06-15

Compact muffler having multiple reactive cavities providing multi-spectrum attenuation for enhanced noise suppression

 #42
20170122154
2017-05-04

Muffler for an exhaust system of an internal combustion engine

 #43
20170089239
2017-03-30

Exhaust muffler and sound deadening element

 #44
20170044943
2017-02-16

Muffler for automobile

 #45
20160281557
2016-09-29

Silencer for internal combustion engine

 #46
20160252204
2016-09-01

Compact modular low resistance broadband acoustic silencer

 #47
20160169070
2016-06-16

Exhaust pipe

 #48
20160097315
2016-04-07

SILENCER

 #49
20160090884
2016-03-31

Muffler for an exhaust system of an internal combustion engine

 #50
20160053658
2016-02-25

Exhaust system for an internal combustion engine and method for operating the exhaust system

 #51
20160024989
2016-01-28

Exhaust gas system for an internal combustion engine and method for operating the exhaust gas system

 #52
20160010524
2016-01-14

Muffler for automobile

 #53
20160010523
2016-01-14

Attenuating engine noise using a reverse resonator

 #54
20150377487
2015-12-31

Damper for gas turbine

 #55
20150361841
2015-12-17

Vehicle exhaust system with resonance damping

 #56
20150337878
2015-11-26

Channeling fluidic waveguide surfaces and tubes

 #57
20150275740
2015-10-01

Exhaust apparatus

 #58
20150068834
2015-03-12

Resonance generating muffler

 #59
20140158249
2014-06-12

Channeling gas flow tube

 #60
20140048350
2014-02-20

Muffler for an exhaust system of an internal combustion engine

 #61
20130213734
2013-08-22

Horizontally installed muffler having sporty tone

 #62
20130175114
2013-07-11

Hybrid silencer with gas-liquid separating function in fuel cell system

 #63
20120273297
2012-11-01

Channeling gas flow tube

 #64
20120267191
2012-10-25

Exhaust muffler

 #65
20120267189
2012-10-25

Muffler

 #66
20120261210
2012-10-18

Resonant-type muffler

 #67
20120138383
2012-06-07

Radiated sound reducing structure

 #68
20120097478
2012-04-26

Muffler

 #69
20110088968
2011-04-21

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

 #70
20110048849
2011-03-03

External cylinder and silencer provided with the external cylinder

 #71
20100170231
2010-07-08

Exhaust pipe for vehicle-mounted engine

 #72
20060011409
2006-01-19

Exhaust system of a turbo-charged engine

 #73
16451884
2020-11-03

Method and apparatus to accommodate sensors on an exhaust component

 #74
14677591
2016-06-28

Modal attenuator