Patents-Review.com
ClassID:

137755 ⎘

F01N1/085 - CPC Classification

Classification description:

Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using a central core throttling gas passage

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

Variable Muffler

 #2
20250360999
2025-11-27

EXHAUST HANDLING SYSTEMS FOR MARINE VESSELS AND RELATED METHODS

 #3
20240286726
2024-08-29

EXHAUST HANDLING SYSTEMS FOR MARINE VESSELS AND RELATED METHODS

 #4
20210140354
2021-05-13

Muffler for vehicle

 #5
20210003053
2021-01-07

Muffler structure

 #6
20200378294
2020-12-03

Noise attenuating exhaust tail pipe

 #7
20200318523
2020-10-08

Exhaust fluid collision type muffler

 #8
20200263578
2020-08-20

Exhaust muffler structure

 #9
20200123947
2020-04-23

Muffler structure of saddle-type vehicle

 #10
20200123945
2020-04-23

Muffler structure of saddle-type vehicle

 #11
20190247990
2019-08-15

MUFFLING STRUCTURE FOR PNEUMATIC TOOL

 #12
20190186332
2019-06-20

Vorticity based noise abatement

 #13
20190178124
2019-06-13

Acoustically tuned muffler

 #14
20190093565
2019-03-28

Tunable resonator

 #15
20190040776
2019-02-07

Internal straight core

 #16
20180355773
2018-12-13

Silencer and ejector in which silencer is used

 #17
20180340472
2018-11-29

Tunable resonator

 #18
20180179943
2018-06-28

Exhaust mechanism for vehicle

 #19
20170219153
2017-08-03

Sound suppression apparatus

 #20
20160341084
2016-11-24

Engine system with turbulence assisted damping of low frequency sound

 #21
20160341083
2016-11-24

Muffler for construction machine

 #22
20160281557
2016-09-29

Silencer for internal combustion engine

 #23
20150330422
2015-11-19

Vortex flow apparatus

 #24
20150089932
2015-04-02

Internal combustion engine

 #25
20150014091
2015-01-15

Frequency-modifying muffler

 #26
20120305330
2012-12-06

Muffler for internal combustion engine

 #27
20120103719
2012-05-03

Exhaust filter

 #28
20110180344
2011-07-28

Travel vehicle-mounted engine device

 #29
20110108345
2011-05-12

Two-wheeled motor vehicle

 #30
20110072807
2011-03-31

Combined exhaust gas aftertreatment/air cleaner dust and ejector unit

 #31
20110011670
2011-01-20

Muffling structure of vent pipe and muffling structure of case

 #32
20110005856
2011-01-13

EXHAUST SILENCER

 #33
20100192557
2010-08-05

Multi-cylinder internal combustion engine, vehicle, marine vessel, and exhausting method for multi-cylinder internal combustion engine

 #34
20100192556
2010-08-05

Internal combustion engine, vehicle, marine vessel, and secondary air supply method for internal combustion engine

 #35
20100192553
2010-08-05

Internal combustion engine, vehicle, marine vessel, and exhaust gas cleaning method for internal combustion engine

 #36
20100180583
2010-07-22

Internal combustion engine, vehicle, marine vessel, and exhausting method for internal combustion engine

 #37
20100071992
2010-03-25

Muffler assembly

 #38
20090313982
2009-12-24

Exhaust system for motorcycle

 #39
20090045006
2009-02-19

Noise Eliminator for Fuel Cell

 #40
20080314679
2008-12-25

Variable Sound Muffler System

 #41
20080245606
2008-10-09

Automotive muffler

 #42
20080245604
2008-10-09

Passive secondary air muffler

 #43
20080093161
2008-04-24

Rear muffler assembly

 #44
20080006026
2008-01-10

Vehicle exhaust systems

 #45
20070261387
2007-11-15

MOTORCYCLE EXHAUST ENHANCEMENT DEVICE

 #46
20070251761
2007-11-01

Exhaust device and vehicle with exhaust device

 #47
20070227810
2007-10-04

Vehicle exhaust system

 #48
20070012511
2007-01-18

Vortex muffler

 #49
20060054384
2006-03-16

Automobile muffler with high flow rate

 #50
20060048996
2006-03-09

Discharge gas check valve integral with muffler

 #51
20050284691
2005-12-29

Integrated heat exchanger and muffler unit

 #52
20050279572
2005-12-22

Arrangement for internal combustion engine

 #53
20050115763
2005-06-02

Motorcycle exhaust enhancers

 #54
18756502
2025-10-07

Work vehicle and aftertreatment system therefor

 #55
18369485
2024-07-23

Exhaust handling systems for marine vessels and related methods