Patents-Review.com
ClassID:

137752 ⎘

F01N1/082 - CPC Classification

Classification description:

Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members

Recent Application in this class:
#1
20250389215
2025-12-25

CONVERTIBLE SILENCER

 #2
20250357515
2025-11-20

SOUND DAMPER, IN PARTICULAR FOR A FUEL-CELL SYSTEM

 #3
20250043706
2025-02-06

CONVERTIBLE SILENCER

 #4
20240384673
2024-11-21

MUFFLER FOR INTERNAL COMBUSTION ENGINES

 #5
20240183294
2024-06-06

SOUND-ABSORBING SILENCER HAVING DIFFUSE REFLECTION STRUCTURE

 #6
20230304425
2023-09-28

DRONE ELIMINATION MUFFLER

 #7
20230137759
2023-05-04

Component of an exhaust system and method for manufacturing such a component

 #8
20220333520
2022-10-20

MUFFLER FOR STRATIFIED SCAVENGING ENGINE

 #9
20220243712
2022-08-04

Connecting structure, exhaust silencer, silencer, and compressor

 #10
20220154609
2022-05-19

Muffler

 #11
20220127983
2022-04-28

Method and system to selectively recover water vapor and latent heat from exhaust gas streams

 #12
20220034247
2022-02-03

Exhaust gas treatment system and method with four-way catalyzed filter element

 #13
20210301693
2021-09-30

Exhaust muffler

 #14
20200408121
2020-12-31

Exhaust gas treatment system and method with four-way catalyzed filter element

 #15
20200318523
2020-10-08

Exhaust fluid collision type muffler

 #16
20200248599
2020-08-06

Muffler

 #17
20200185745
2020-06-11

Apparatus for regulating pressure of exhaust gas of fuel cell system

 #18
20200123947
2020-04-23

Muffler structure of saddle-type vehicle

 #19
20200123946
2020-04-23

Drone elimination muffler

 #20
20190383198
2019-12-19

Muffler with easy discharge of condensate

 #21
20190353078
2019-11-21

Exhaust subsystem with fiber pipe and method of forming fiber pipe

 #22
20190234264
2019-08-01

Exhaust unit

 #23
20180252130
2018-09-06

MUFFLER INSERT, AND SYSTEMS, METHODS AND APPARATUS FOR MAKING

 #24
20170356585
2017-12-14

Damping device

 #25
20170241311
2017-08-24

Exhaust tube and tuning tube assembly with whistle reduction feature

 #26
20170145882
2017-05-25

Drone elimination muffler

 #27
20160363018
2016-12-15

Muffler insert, and systems, methods and apparatus for making

 #28
20160017775
2016-01-21

Noise attenuating acoustic panel

 #29
20150361841
2015-12-17

Vehicle exhaust system with resonance damping

 #30
20150159528
2015-06-11

Noise attenuation unit for engine systems

 #31
20140102300
2014-04-17

Low pressure drop, high efficiency spark or particulate arresting devices and methods of use

 #32
20130180798
2013-07-18

Exhaust system of engine

 #33
20120292128
2012-11-22

Plastic muffler with Helmholtz chamber

 #34
20120055736
2012-03-08

Muffler for vehicle

 #35
20120006617
2012-01-12

Muffler, muffler insert, and methods and apparatus for making

 #36
20110088966
2011-04-21

Silencer apparatus with disposable silencer cartridge unit

 #37
20110005860
2011-01-13

EXHAUST COMPONENT WITH REDUCED PACK

 #38
20100288581
2010-11-18

Muffler for pneumatic handheld tool

 #39
20090200105
2009-08-13

Silencer apparatus with disposable silencer cartridge unit

 #40
20080141667
2008-06-19

Fuel-cell exhaust system

 #41
20070246294
2007-10-25

Exhaust noise control for motorcycles

 #42
20070246292
2007-10-25

Sound adjustable device for coupling to an engine and method for manufacturing thereof

 #43
20060162994
2006-07-27

Muffler for attenuating noise produced by a pneumatic device, having a conduit path for maximun noise reduction

 #44
20050150717
2005-07-14

Silencer for pneumatic machines

 #45
20050150716
2005-07-14

Exhaust apparatus for small-sized engine

 #46
20050011697
2005-01-20

Rotatable propeller driven engine exhaust system

 #47
18756502
2025-10-07

Work vehicle and aftertreatment system therefor