ClassID:

137760

F01N1/10 - CPC Classification

Classification description:

Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials

Recent Application in this class:
#1
20260125997
2026-05-07

Variable Muffler

#2
20260092545
2026-04-02

EXHAUST MUFFLER

#3
20260071564
2026-03-12

Exhaust Muffler

#4
20250357515
2025-11-20

SOUND DAMPER, IN PARTICULAR FOR A FUEL-CELL SYSTEM

#5
20250257675
2025-08-14

ACOUSTIC METAMATERIAL-BASED MUFFLER FOR BROADBAND EXHAUST NOISE REDUCTION OF INTERNAL COMBUSTION ENGINES

#6
20230358153
2023-11-09

NOISE REDUCTION SYSTEMS FOR AEROSOL COLLECTORS

#7
20220228517
2022-07-21

SMALL AIR-COOLED ENGINE ASSEMBLY WITH DRY SUMP LUBRICATION SYSTEM

#8
20220034244
2022-02-03

SOUND SUPPRESSION DEVICE FOR GAS CAPTURE SYSTEM OF CYCLOTRON PRODUCT

#9
20210363903
2021-11-25

Method and apparatus for filling silencer with glass fiber

#10
20210164370
2021-06-03

LOW NOISE ENCLOSURE

#11
20210131323
2021-05-06

Muffler for vehicle for implementing sporty exhaust sound

#12
20200332687
2020-10-22

Device for controlling exhaust sound of vehicle

#13
20200232357
2020-07-23

Acoustic damper for gas turbine combustors with orthogonal slots

#14
20200173321
2020-06-04

Silencer for fuel cell vehicles

#15
20200037063
2020-01-30

Sound absorbing material and speaker box using same

#16
20200003093
2020-01-02

Muffler

#17
20190353078
2019-11-21

Exhaust subsystem with fiber pipe and method of forming fiber pipe

#18
20190301322
2019-10-03

Low noise enclosure

#19
20190147842
2019-05-16

Sound damping device for a duct or chamber

#20
20190063263
2019-02-28

Mobile power generation system including noise attenuation

#21
20180355773
2018-12-13

Silencer and ejector in which silencer is used

#22
20180326837
2018-11-15

Valve assembly

#23
20180291781
2018-10-11

Baffle assembly for a duct

#24
20170356585
2017-12-14

Damping device

#25
20170335741
2017-11-23

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

#26
20170234239
2017-08-17

Acoustic nozzles for inlet bleed heat systems

#27
20170219153
2017-08-03

Sound suppression apparatus

#28
20170089239
2017-03-30

Exhaust muffler and sound deadening element

#29
20160061074
2016-03-03

Muffler for an exhaust system

#30
20150377101
2015-12-31

Method of and apparatus for exhausting internal combustion engines

#31
20150233276
2015-08-20

MODULAR ASSEMBLY FOR AFTERTREATMENT SYSTEM

#32
20150068835
2015-03-12

Muffler shell for use in the exhaust system of a vehicle

#33
20140251718
2014-09-11

Muffler equipped with catalytic converter

#34
20140251717
2014-09-11

Muffler equipped with catalytic converter

#35
20140196977
2014-07-17

SILENCER AND METHOD FOR MANUFACTURING THE SAME

#36
20140116801
2014-05-01

Silencer and a method for producing same

#37
20130247849
2013-09-26

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

#38
20130230434
2013-09-05

Four cycle internal combustion engine exhaust

#39
20130220732
2013-08-29

Muffler with dual exhaust gas discharge pipe for vehicle

#40
20130167506
2013-07-04

Method of and apparatus for exhausting internal combustion engines

#41
20130092471
2013-04-18

Active sound absorbers

#42
20130056299
2013-03-07

MUFFLER FOR AN EXHAUST SYSTEM OF VEHICLE

#43
20130020147
2013-01-24

Tunable Muffler

#44
20120267189
2012-10-25

Muffler

#45
20120224998
2012-09-06

Exhaust gas denitrifying system having noise-reduction structure

#46
20120181106
2012-07-19

Exhaust Assembly For Use With A Combustion Engine

#47
20120103719
2012-05-03

Exhaust filter

#48
20120055736
2012-03-08

Muffler for vehicle

#49
20120031698
2012-02-09

Motorcycle

#50
20110186378
2011-08-04

OPEN CHAMBER EXHAUST MUFFLERS AND RELATED METHODS OF MANUFACTURE AND USE

#51
20110167775
2011-07-14

Exhaust gas purifying device

#52
20110147118
2011-06-23

Silencer/muffler

#53
20110088966
2011-04-21

Silencer apparatus with disposable silencer cartridge unit

#54
20110061969
2011-03-17

Snap-action valve for exhaust system

#55
20110005856
2011-01-13

EXHAUST SILENCER

#56
20100307134
2010-12-09

Device and method for the reduction of emissions

#57
20100199843
2010-08-12

IMPACT DIESEL PARTICULATE FILTER

#58
20100115931
2010-05-13

Method of forming sheet member, exhaust gas treatment apparatus including the sheet member, and muffling apparatus including the sheet member

#59
20100084220
2010-04-08

Sound-attenuating muffler having reduced back pressure

#60
20100084219
2010-04-08

MUFFLER INSULATING ELEMENT, MUFFLER AND METHOD OF PRODUCING A MUFFLER

#61
20100061898
2010-03-11

Exhaust gas retreatment device

#62
20090313982
2009-12-24

Exhaust system for motorcycle

#63
20090200105
2009-08-13

Silencer apparatus with disposable silencer cartridge unit

#64
20090087353
2009-04-02

MAT MEMBER, EXHAUST GAS TREATMENT APPARATUS, AND MUFFLING APPARATUS

#65
20090087352
2009-04-02

Mat material, exhaust gas treating apparatus, and muffler

#66
20090078498
2009-03-26

SEAMLESS IN-LINE AIRBOAT MUFFLER

#67
20090045006
2009-02-19

Noise Eliminator for Fuel Cell

#68
20090038879
2009-02-12

Muffler unit for general-purpose engine

#69
20090000863
2009-01-01

Exhaust pipe

#70
20080308348
2008-12-18

Exhaust System for Internal Combustion Engines

#71
20080302598
2008-12-11

Silencer

#72
20080245063
2008-10-09

Snap-action valve for exhaust system

#73
20080224083
2008-09-18

Snap-action valve for exhaust system

#74
20080185218
2008-08-07

Noise eliminator for fuel cell

#75
20080179135
2008-07-31

Low-noise machine package

#76
20080178566
2008-07-31

Sheet member, forming method of the same, exhaust gas treatmenet apparatus, and muffling apparatus

#77
20080148722
2008-06-26

Method of and apparatus for exhausting internal combustion engines

#78
20080116004
2008-05-22

Motorcycle Exhaust System and Motorcycle Provided with Exhaust System

#79
20080110693
2008-05-15

Exhaust system for motorcycle

#80
20080093161
2008-04-24

Rear muffler assembly

#81
20080066446
2008-03-20

Impact diesel particulate filter

#82
20080053068
2008-03-06

Device & Method for the Reduction of Emissions

#83
20080035419
2008-02-14

Muffler diffuser

#84
20080035418
2008-02-14

Exhaust sound and emission control systems

#85
20080023265
2008-01-31

Combination Silencer

#86
20070289294
2007-12-20

Exhaust gas aftertreatment device for an internal combustion engine

#87
20070283680
2007-12-13

Exhaust Processor And Associated Method

#88
20070227811
2007-10-04

Vehicle exhaust system

#89
20070227809
2007-10-04

VEHICLE EXHAUST SYSTEM

#90
20070227808
2007-10-04

Vehicle exhaust system

#91
20070158136
2007-07-12

Muffler and vehicle equipped with muffler

#92
20070158135
2007-07-12

Muffler and vehicle equipped with muffler

#93
20070151798
2007-07-05

Muffler for a motorcycle

#94
20070107419
2007-05-17

Exhaust system for motorcycle

#95
20070095605
2007-05-03

Muffler for vehicle

#96
20070012511
2007-01-18

Vortex muffler

#97
20060249328
2006-11-09

Muffler for motor vehicle

#98
20060219476
2006-10-05

Modular muffler

#99
20060218904
2006-10-05

Diesel emissions control system and method

#100
20060201742
2006-09-14

Motorcycle exhaust system

#101
20060201145
2006-09-14

Low emissions diesel system and method

#102
20060185348
2006-08-24

Device for purifying exhaust gases

#103
20060113145
2006-06-01

Fuel cell vehicle

#104
20050279571
2005-12-22

Exhaust sound and emission control systems

#105
20050279570
2005-12-22

Method for containing an acoustical material within an assembly

#106
20050224283
2005-10-13

Internal combustion engine silencer

#107
20050217929
2005-10-06

Muffler with secondary flow path

#108
20050205355
2005-09-22

Tailpipe of automotive vehicle

#109
20050167192
2005-08-04

Silencer for a motor vehicle exhaust system, and its method of mounting

#110
20050150716
2005-07-14

Exhaust apparatus for small-sized engine

#111
20050067044
2005-03-31

Method of filling a muffler cavity with fibrous material

#112
20050051383
2005-03-10

Muffler with internal heat shield

#113
20050022515
2005-02-03

Motor vehicle having special arrangement of fuel tank, preliminary muffler and reduction agent tank

#114
20050011697
2005-01-20

Rotatable propeller driven engine exhaust system

#115
17363152
2022-02-08

Sound deflecting muffler

#116
15046891
2017-04-18

Multi-muffler sound attenuator assembly