Patents-Review.com
ClassID:

138115 ⎘

F01N2470/02 - CPC Classification

Classification description:

Structure or shape of gas passages, pipes or tubes Tubes being perforated

Sub-classes:
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
20250264045
2025-08-21

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

 #5
20250250925
2025-08-07

CONNECTION UNIT

 #6
20250250920
2025-08-07

Engine Device

 #7
20250101897
2025-03-27

SELECTIVE CATALYTIC REDUCTION (SCR) SYSTEM AND ENGINE

 #8
20240376840
2024-11-14

EXHAUST GAS SYSTEM UNIT

 #9
20240352881
2024-10-24

Exhaust sound attenuation and control system

 #10
20240309789
2024-09-19

EXHAUST AFTERTREATMENT APPARATUS

 #11
20240229693
2024-07-11

EXHAUST MUFFLER FOR INTERNAL COMBUSTION ENGINES

 #12
20240102407
2024-03-28

SOUND DAMPER

 #13
20240035405
2024-02-01

EXHAUST SOUND ATTENUATION AND CONTROL SYSTEM

 #14
20240018890
2024-01-18

DOSING AND MIXING ASSEMBLIES FOR EXHAUST AFTERTREATMENT SYSTEM

 #15
20230399963
2023-12-14

Muffler

 #16
20230366337
2023-11-16

Exhaust device and method of manufacturing thereof

 #17
20230228208
2023-07-20

Engine device

 #18
20230193787
2023-06-22

Diffuser nozzle for a gas turbine engine

 #19
20230167757
2023-06-01

Aftertreatment system

 #20
20230024144
2023-01-26

Muffler

 #21
20220341357
2022-10-27

Dosing and mixing assemblies for exhaust aftertreatment system

 #22
20220186651
2022-06-16

Decomposition chamber for aftertreatment systems

 #23
20220154609
2022-05-19

Muffler

 #24
20220042438
2022-02-10

Aftertreatment system

 #25
20210340897
2021-11-04

Engine device

 #26
20210340896
2021-11-04

Apparatus for adding a liquid reducing agent to the exhaust gas from an internal combustion engine and motor vehicle

 #27
20210317763
2021-10-14

Insert assembly unit for a muffler of an exhaust system of an internal combustion engine

 #28
20210301693
2021-09-30

Exhaust muffler

 #29
20210254522
2021-08-19

Impact energy absorber with integrated engine exhaust noise muffler

 #30
20210246818
2021-08-12

Muffler

 #31
20210239022
2021-08-05

Dosing and mixing arrangement for use in exhaust aftertreatment

 #32
20210239017
2021-08-05

Exhaust system component

 #33
20210207507
2021-07-08

Muffler with internally supported tuner

 #34
20210199034
2021-07-01

Muffler device

 #35
20210180487
2021-06-17

Air outlet sound absorber for a rotating electrical machine

 #36
20210156287
2021-05-27

Exhaust muffler

 #37
20210148270
2021-05-20

Lean-burn engine after-treatment system

 #38
20210148262
2021-05-20

Multi-mode exhaust muffler

 #39
20210131329
2021-05-06

Systems and methods for controlling flow distribution in an aftertreatment system

 #40
20210131323
2021-05-06

Muffler for vehicle for implementing sporty exhaust sound

 #41
20210115822
2021-04-22

Muffler

 #42
20210003053
2021-01-07

Muffler structure

 #43
20200386132
2020-12-10

Exhaust sound attenuation device

 #44
20200369402
2020-11-26

Double inlets exhaust system for unmanned aerial vehicle

 #45
20200347761
2020-11-05

Exhaust muffler for an exhaust system of an internal combustion engine

 #46
20200309009
2020-10-01

Engine device

 #47
20200291837
2020-09-17

EXHAUST SYSTEM FOR AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE AS WELL AS MOTOR VEHICLE

 #48
20200256227
2020-08-13

EXHAUST SYSTEM AS WELL AS MOTOR VEHICLE WITH AN EXHAUST SYSTEM

 #49
20200248599
2020-08-06

Muffler

 #50
20200240300
2020-07-30

Muffler

 #51
20200240299
2020-07-30

Multi-chambered sound attenuation with resonant frequency targeting

 #52
20200173321
2020-06-04

Silencer for fuel cell vehicles

 #53
20200123961
2020-04-23

CLAMP

 #54
20200123947
2020-04-23

Muffler structure of saddle-type vehicle

 #55
20200123945
2020-04-23

Muffler structure of saddle-type vehicle

 #56
20200102865
2020-04-02

Muffler for an internal combustion engine

 #57
20200088077
2020-03-19

SILENCER FOR AN EXHAUST GAS SYSTEM OF A MOTOR VEHICLE AND MOTOR VEHICLE WITH A SILENCER

 #58
20200003093
2020-01-02

Muffler

 #59
20190383198
2019-12-19

Muffler with easy discharge of condensate

 #60
20190360374
2019-11-28

Exhaust valve damper

 #61
20190353078
2019-11-21

Exhaust subsystem with fiber pipe and method of forming fiber pipe

 #62
20190345856
2019-11-14

Methods of and systems for constraining fibrous material during filling operation

 #63
20190323396
2019-10-24

Muffler comprising a Helmholtz resonator and a vehicle comprising such a muffler

 #64
20190301323
2019-10-03

Vehicle muffler

 #65
20190249596
2019-08-15

Exhaust gas purification apparatus for an internal combustion engine

 #66
20190249588
2019-08-15

Muffler unit

 #67
20190249583
2019-08-15

Dosing and mixing arrangement for use in exhaust aftertreatment

 #68
20190234264
2019-08-01

Exhaust unit

 #69
20190226380
2019-07-25

Engine device

 #70
20190218956
2019-07-18

Exhaust orifice tube for vehicle mufflers

 #71
20190186332
2019-06-20

Vorticity based noise abatement

 #72
20190154176
2019-05-23

Structure for installing pipe fixing clamp installed in internal structural pipe of sound absorber

 #73
20190145297
2019-05-16

MUFFLER

 #74
20190136740
2019-05-09

Exhaust silencer device

 #75
20190136739
2019-05-09

Vehicle exhaust device

 #76
20190120116
2019-04-25

Muffler

 #77
20190120115
2019-04-25

Silencer insert, silencer comprising the same and method for manufacturing a silencer insert

 #78
20190118146
2019-04-25

Exhaust treatment device

 #79
20190085744
2019-03-21

Exhaust device for internal combustion engine

 #80
20190078476
2019-03-14

Exhaust device for internal combustion engine

 #81
20190055866
2019-02-21

Exhaust device for internal combustion engine

 #82
20190024549
2019-01-24

Method for forming a collar in a muffler housing

 #83
20190017426
2019-01-17

Exhaust gas mixer

 #84
20180355777
2018-12-13

Exhaust gas burner assembly

 #85
20180347439
2018-12-06

Urea mixer

 #86
20180156093
2018-06-07

Inlet diffuser for exhaust aftertreatment system

 #87
20180142588
2018-05-24

Silencer and vehicle engine including same

 #88
20180051608
2018-02-22

Structure of muffler

 #89
20180023443
2018-01-25

MIXING DEVICE

 #90
20180003097
2018-01-04

Heat recovery device and exhaust line fitted with such device

 #91
20170335741
2017-11-23

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

 #92
20170314435
2017-11-02

Muffler and/or exhaust apparatus and method of manufacture

 #93
20170241310
2017-08-24

Acoustic device

 #94
20170234201
2017-08-17

Urea mixer

 #95
20170218806
2017-08-03

Muffler

 #96
20170211737
2017-07-27

Clamp

 #97
20170198617
2017-07-13

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

 #98
20170167333
2017-06-15

Exhaust muffler for combustion engine

 #99
20170167332
2017-06-15

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

 #100
20170122154
2017-05-04

Muffler for an exhaust system of an internal combustion engine

 #101
20170082005
2017-03-23

Exhaust gas purifying device

 #102
20170074132
2017-03-16

Exhaust system for internal combustion engine

 #103
20170058732
2017-03-02

Exhaust system having variable exhaust gas paths

 #104
20170044943
2017-02-16

Muffler for automobile

 #105
20160361694
2016-12-15

Exhaust treatment device

 #106
20160333756
2016-11-17

Muffler

 #107
20160312680
2016-10-27

Mixing pipe arrangement with housing

 #108
20160281557
2016-09-29

Silencer for internal combustion engine

 #109
20160201529
2016-07-14

EXHAUST TAILPIPE AUXILIARY SOUND ENHANCEMENT HOLE

 #110
20160169078
2016-06-16

Exhaust gas system of a motor vehicle

 #111
20160169070
2016-06-16

Exhaust pipe

 #112
20160115844
2016-04-28

Dosing and mixing arrangement for use in exhaust aftertreatment

 #113
20160108792
2016-04-21

Component of an exhaust system

 #114
20160069240
2016-03-10

Exhaust gas purification system

 #115
20160053658
2016-02-25

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

 #116
20160053642
2016-02-25

Muffler cutter

 #117
20160010524
2016-01-14

Muffler for automobile

 #118
20150377113
2015-12-31

Muffler unit and vehicle including the same

 #119
20150377101
2015-12-31

Method of and apparatus for exhausting internal combustion engines

 #120
20150361852
2015-12-17

Exhaust gas purification device

 #121
20150354421
2015-12-10

Muffler

 #122
20150330283
2015-11-19

Tailor to fit muffler

 #123
20150275740
2015-10-01

Exhaust apparatus

 #124
20150275721
2015-10-01

System and method for tuned exhaust

 #125
20150255054
2015-09-10

Active design of exhaust sounds

 #126
20150219041
2015-08-06

Engine

 #127
20150192055
2015-07-09

Muffler

 #128
20150165378
2015-06-18

Exhaust treatment system having an SCR with a center inlet

 #129
20150152762
2015-06-04

Exhaust-gas heat exchanger

 #130
20150075895
2015-03-19

Working machine

 #131
20150071828
2015-03-12

Exhaust mixing assembly

 #132
20150071825
2015-03-12

Exhaust mixing device

 #133
20150071822
2015-03-12

Vertical ultrasonic decomposition pipe

 #134
20150047922
2015-02-19

Muffler having coupling of a tailpipe by means of a coupling chamber

 #135
20150040545
2015-02-12

Truck provided with a device for lowering the temperature of exhaust gas

 #136
20150040537
2015-02-12

Perforated mixing pipe with swirler

 #137
20150020484
2015-01-22

Exhaust gas purification device

 #138
20140352287
2014-12-04

Exhaust gas treatment device

 #139
20140334987
2014-11-13

Axial flow atomization module

 #140
20140331658
2014-11-13

Exhaust system for an off-road vehicle

 #141
20140311148
2014-10-23

Exhaust apparatus of construction machine

 #142
20140284138
2014-09-25

Engine muffler

 #143
20140260220
2014-09-18

Exhaust purification device

 #144
20140251718
2014-09-11

Muffler equipped with catalytic converter

 #145
20140251717
2014-09-11

Muffler equipped with catalytic converter

 #146
20140248186
2014-09-04

System and method for accommodating aftertreatment bricks

 #147
20140238000
2014-08-28

Burner with air-assisted fuel nozzle and vaporizing ignition system

 #148
20140237999
2014-08-28

Exhaust aftertreatment burner with preheated combustion air

 #149
20140182961
2014-07-03

Vehicle having an auxiliary exhaust pipe

 #150
20140161677
2014-06-12

Loose-fill insulation exhaust gas treatment device and methods of manufacturing

 #151
20140144721
2014-05-29

Muffler for motor vehicle

 #152
20140102083
2014-04-17

Exhaust gas system with HC adsorber and parallel catalytic converter, and vehicle comprising such an exhaust gas system

 #153
20140102082
2014-04-17

Exhaust system with line element

 #154
20140026540
2014-01-30

Compact exhaust gas treatment unit with mixing region, method for mixing an exhaust gas and vehicle

 #155
20140013729
2014-01-16

Heating module for an exhaust-gas purification system

 #156
20130340417
2013-12-26

Exhaust system for an agricultural vehicle

 #157
20130333357
2013-12-19

Exhaust gas purifying device

 #158
20130291498
2013-11-07

EXHAUST SYSTEM HAVING MULTI-BANK DISTRIBUTION DEVICES

 #159
20130283764
2013-10-31

Muffler

 #160
20130202493
2013-08-08

Exhaust gas purification system

 #161
20130167506
2013-07-04

Method of and apparatus for exhausting internal combustion engines

 #162
20130025702
2013-01-31

Tail pipe assembly for vehicle

 #163
20120305330
2012-12-06

Muffler for internal combustion engine

 #164
20120292128
2012-11-22

Plastic muffler with Helmholtz chamber

 #165
20120285766
2012-11-15

Exhaust system component

 #166
20120273302
2012-11-01

Exhaust apparatus of internal combustion engine

 #167
20120273301
2012-11-01

MUFFLER ASSEMBLY WITH MOUNTING ADAPTER(S) AND PROCESS OF MANUFACTURE

 #168
20120273300
2012-11-01

Lightweight polymeric exhaust components

 #169
20120273299
2012-11-01

Muffler assembly and process of manufacture

 #170
20120267191
2012-10-25

Exhaust muffler

 #171
20120261210
2012-10-18

Resonant-type muffler

 #172
20120181106
2012-07-19

Exhaust Assembly For Use With A Combustion Engine

 #173
20120180465
2012-07-19

Exhaust apparatus of internal combustion engine

 #174
20120144809
2012-06-14

CATALYTIC CONVERTER MODULE

 #175
20120138384
2012-06-07

Exhaust apparatus for an internal combustion engine

 #176
20120138383
2012-06-07

Radiated sound reducing structure

 #177
20120137666
2012-06-07

Exhaust gas apparatus of an internal combustion engine

 #178
20120124979
2012-05-24

Engine device

 #179
20120103719
2012-05-03

Exhaust filter

 #180
20120102932
2012-05-03

Exhaust gas purification device

 #181
20120097478
2012-04-26

Muffler

 #182
20120055734
2012-03-08

Exhaust flow control device for exhaust muffler

 #183
20110308234
2011-12-22

Dosing and mixing arrangement for use in exhaust aftertreatment

 #184
20110219749
2011-09-15

Exhaust system having multiple inlets and multiple outlets

 #185
20110192677
2011-08-11

Exhaust muffler device

 #186
20110186376
2011-08-04

Muffler with integrated catalytic converter and polymeric muffler body

 #187
20110167807
2011-07-14

Exhaust gas purifying device

 #188
20110154810
2011-06-30

Engine device

 #189
20110154809
2011-06-30

Engine device

 #190
20110146255
2011-06-23

Exhaust gas treatment device

 #191
20110094206
2011-04-28

Reductant injection and decomposition system

 #192
20110072807
2011-03-31

Combined exhaust gas aftertreatment/air cleaner dust and ejector unit

 #193
20110061374
2011-03-17

EXHAUST GAS TREATMENT SYSTEM

 #194
20110048849
2011-03-03

External cylinder and silencer provided with the external cylinder

 #195
20100294589
2010-11-25

Snap action valve with inertia damper

 #196
20100223916
2010-09-09

Exhaust gas purification device

 #197
20100213000
2010-08-26

Vehicular muffler and motorcycle incorporating same

 #198
20100205946
2010-08-19

Engine exhaust heat recovery device, and energy supply apparatus using the same

 #199
20100192880
2010-08-05

Exhaust pipe structure for saddle-ride type vehicle

 #200
20100170744
2010-07-08

Motor vehicle exhaust line silencer

 #201
20100132343
2010-06-03

Filter device for reducing automobile exhaust fume

 #202
20100126799
2010-05-27

Muffler and engine exhaust apparatus

 #203
20100122682
2010-05-20

Exhaust component cover

 #204
20100107616
2010-05-06

Exhaust gas aspirator

 #205
20100107613
2010-05-06

Black exhaust purification apparatus for diesel engine

 #206
20100107612
2010-05-06

Exhaust purification apparatus for an engine

 #207
20100083647
2010-04-08

Exhaust diffuser for a vocational truck

 #208
20100071992
2010-03-25

Muffler assembly

 #209
20100043412
2010-02-25

Exhaust diffuser for a truck

 #210
20100006370
2010-01-14

Sound-attenuating muffler having reduced back pressure

 #211
20100005790
2010-01-14

Selective catalytic reduction (SCR) catalyst injection systems

 #212
20090308687
2009-12-17

Muffler for vehicle

 #213
20090308686
2009-12-17

Venturi muffler

 #214
20090301808
2009-12-10

Muffler structure for vehicle

 #215
20090229913
2009-09-17

Dual Mode Exhaust Muffler

 #216
20090139796
2009-06-04

Exhaust device for straddle-type vehicle and straddle-type vehicle

 #217
20090107127
2009-04-30

System for treating exhaust gas

 #218
20090087353
2009-04-02

MAT MEMBER, EXHAUST GAS TREATMENT APPARATUS, AND MUFFLING APPARATUS

 #219
20090087352
2009-04-02

Mat material, exhaust gas treating apparatus, and muffler

 #220
20090071136
2009-03-19

Exhaust diffuser for an internal combustion engine

 #221
20090038879
2009-02-12

Muffler unit for general-purpose engine

 #222
20090031717
2009-02-05

Exhaust flow distribution device

 #223
20090014236
2009-01-15

Long fiber thermoplastic composite muffler system with integrated crash management

 #224
20090007552
2009-01-08

Exhaust manifold having improved NVH characteristics

 #225
20090000862
2009-01-01

MOTORCYCLE EXHAUST SYSTEM

 #226
20090000282
2009-01-01

Performance exhaust system

 #227
20080314679
2008-12-25

Variable Sound Muffler System

 #228
20080308347
2008-12-18

Vehicular exhaust system

 #229
20080251314
2008-10-16

Exhaust system for an engine and motorcycle including the exhaust system

 #230
20080245606
2008-10-09

Automotive muffler

 #231
20080185218
2008-08-07

Noise eliminator for fuel cell

 #232
20080163488
2008-07-10

Method for manufacturing an exhaust element of an exhaust line of a vehicle with a heat engine and exhaust element, namely obtained through implementing said method

 #233
20080148722
2008-06-26

Method of and apparatus for exhausting internal combustion engines

 #234
20080072576
2008-03-27

Exhaust emission purification apparatus for engine

 #235
20080047260
2008-02-28

Exhaust aftertreatment system with spiral mixer

 #236
20080035418
2008-02-14

Exhaust sound and emission control systems

 #237
20080023265
2008-01-31

Combination Silencer

 #238
20080017444
2008-01-24

Vehicle muffler

 #239
20070289294
2007-12-20

Exhaust gas aftertreatment device for an internal combustion engine

 #240
20070283680
2007-12-13

Exhaust Processor And Associated Method

 #241
20070272480
2007-11-29

Exhaust apparatus of an internal combustion engine

 #242
20070256673
2007-11-08

MOTORCYCLE DYNAMIC EXHAUST SYSTEM

 #243
20070227810
2007-10-04

Vehicle exhaust system

 #244
20070205045
2007-09-06

Muffler for an exhaust system

 #245
20070205044
2007-09-06

Silencer

 #246
20070187175
2007-08-16

Muffler for exhaust systems of vehicles

 #247
20070125594
2007-06-07

Muffler assembly with sound absorbing member

 #248
20070095606
2007-05-03

Internal combustion engine exhaust line muffler

 #249
20070095605
2007-05-03

Muffler for vehicle

 #250
20070045041
2007-03-01

Muffler for an exhaust system

 #251
20070012511
2007-01-18

Vortex muffler

 #252
20060283661
2006-12-21

Silencer

 #253
20060266580
2006-11-30

Muffler for an exhaust system and manufacturing method for same

 #254
20060254843
2006-11-16

Switchable loud and quiet exhaust apparatus

 #255
20060243521
2006-11-02

Muffler with improved heat dissipation

 #256
20060157295
2006-07-20

Combination muffler and spark arrester

 #257
20060070375
2006-04-06

Exhaust flow distribution device

 #258
20060042871
2006-03-02

Exhaust device for vehicle engine

 #259
20060040158
2006-02-23

Fuel cell discharge-gas processing device

 #260
20060011409
2006-01-19

Exhaust system of a turbo-charged engine

 #261
20060000205
2006-01-05

Motorcycle dynamic exhaust system

 #262
20050284623
2005-12-29

Combined muffler/heat exchanger

 #263
20050279571
2005-12-22

Exhaust sound and emission control systems

 #264
20050224283
2005-10-13

Internal combustion engine silencer

 #265
20050223703
2005-10-13

Muffler with catalytic converter arrangement; and method

 #266
20050205355
2005-09-22

Tailpipe of automotive vehicle

 #267
20050133301
2005-06-23

Muffler for internal combustion engine

 #268
20050115229
2005-06-02

Muffler with an integrated catalytic converter

 #269
15180868
2017-11-14

Dual purpose muffler