F01N1/161 - CPC Classification Index

ClassID:

137765 ⎘

F01N1/161 - CPC Classification

Classification description:

Silencing apparatus characterised by method of silencing by using movable parts for adjusting resonance or dead chambers or passages to resonance or dead chambers

Sub-classes:

F01N1/163 » {by means of valves} 78

Recent Application in this class:

20250389215

2025-12-25

CONVERTIBLE SILENCER

20250360999

2025-11-27

EXHAUST HANDLING SYSTEMS FOR MARINE VESSELS AND RELATED METHODS

20250067201

2025-02-27

Dual Mode Muffler

20250043706

2025-02-06

CONVERTIBLE SILENCER

20240286726

2024-08-29

EXHAUST HANDLING SYSTEMS FOR MARINE VESSELS AND RELATED METHODS

20230235690

2023-07-27

Exhaust restriction device for improved sensor signal

20190093565

2019-03-28

Tunable resonator

20180374473

2018-12-27

Exhaust system sound generation assembly unit

20170335729

2017-11-23

Slip-type active noise control muffler and method for controlling the same

#10

20170314434

2017-11-02

Exhaust gas aftertreatment device and exhaust gas aftertreatment method

#11

20170227019

2017-08-10

Noise suppression apparatus and fan module using the same

#12

20170211439

2017-07-27

Exhaust gas system for an internal combustion engine

#13

20170107875

2017-04-20

Exhaust valve for muffler and muffler including the same

#14

20150247433

2015-09-03

IC power plant and method of operation

#15

20150152760

2015-06-04

Muffler

#16

20130247849

2013-09-26

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

#17

20110278090

2011-11-17

Exhaust system and corresponding support structure

#18

20110048848

2011-03-03

Muffler apparatus for vehicle

#19

18369485

2024-07-23

Exhaust handling systems for marine vessels and related methods