ClassID:

197141

G10K11/161 - CPC Classification

Classification description:

Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow

Recent Application in this class:
#1
20260134858
2026-05-14

SOUND ABSORPTION PANEL WITH RIBLETS

#2
20260100178
2026-04-09

DAMPING MECHANISM AND HEADSET

#3
20260094595
2026-04-02

ASSEMBLY FORMING A SOUND-ABSORBING MATERIAL

#4
20260051309
2026-02-19

SYSTEMS AND METHODS FOR PASSIVELY MANAGING ENVIRONMENTAL NOISE

#5
20260045245
2026-02-12

SOUND INSULATION ASSEMBLY FOR WASTE DISPOSER

#6
20260038472
2026-02-05

SOUND INSULATOR

#7
20260021439
2026-01-22

HAZARDOUS GAS DIRECT AIR CAPTURE SYSTEM WITH VERTICAL EXHAUST PLENUM

#8
20260018154
2026-01-15

ASSEMBLY OF ACOUSTIC COMPONENT SECTORS

#9
20250384865
2025-12-18

POROUS STRUCTURAL BODY, POROUS STRUCTURAL BODY FOR AERODYNAMIC NOISE REDUCTION, AND METHOD OF MANUFACTURING A POROUS STRUCTURAL BODY

#10
20250333178
2025-10-30

Oxygen Pressure Relief and Ventilation System and Method

#11
20250333177
2025-10-30

Oxygen Pressure Relief and Ventilation System and Method

#12
20250329763
2025-10-23

Fuel Cell Exhaust Separation System and Control Method

#13
20250259613
2025-08-14

AIR GUIDE AND NOISE REDUCTION DEVICE AND SERVER

#14
20250256859
2025-08-14

ACOUSTICALLY TREATED THRUST REVERSER BULLNOSE FAIRING AND TORQUE BOX

#15
20250221590
2025-07-10

VACUUM CLEANER

#16
20250191565
2025-06-12

VENTILATION TYPE SILENCER

#17
20250191564
2025-06-12

LIQUID OXYGEN VENT SILENCER USED IN OXYGEN PRODUCTION PROCESS

#18
20250191563
2025-06-12

LIQUID OXYGEN VENT SILENCER

#19
20250140227
2025-05-01

BROADBAND SILENCER USING ACOUSTIC METAMATERIAL AND METHOD OF DESIGNING THE SAME

#20
20250106552
2025-03-27

FLUID-FILLED ACOUSTIC FLOW SHIELD

#21
20250014557
2025-01-09

MUFFLING DEVICE AND REFRIGERATING AND FREEZING APPARATUS

#22
20240418111
2024-12-19

SOUND ATTENUATING ENGINE EXHAUST SYSTEM

#23
20240412717
2024-12-12

AIR AMPLIFIER WITH MULTI-STAGE NOISE SUPPRESSION SYSTEM

#24
20240379084
2024-11-14

THERMAL MANAGEMENT SYSTEMS WITH ACOUSTIC ISOLATION

#25
20240292152
2024-08-29

SOUND-MITIGATING DEVICE FOR A DUCT SYSTEM

#26
20240280067
2024-08-22

TOOLS AND METHODS FOR FORMING ACOUSTIC CORES

#27
20240257792
2024-08-01

ACOUSTIC MUFFLER FOR A MOTORIZED FOOD PROCESSING DEVICE

#28
20240210095
2024-06-27

COMPRESSOR BIN AND REFRIGERATION APPARATUS HAVING THE SAME

#29
20240210092
2024-06-27

AIR DUCT ASSEMBLY AND REFRIGERATING APPLIANCE HAVING THE SAME

#30
20240206549
2024-06-27

ELECTRONIC ATOMIZATION DEVICE AND POWER SUPPLY APPARATUS THEREOF

#31
20240183575
2024-06-06

SOUND ATTENUATOR FOR A TERMINAL UNIT

#32
20240183293
2024-06-06

AIR AMPLIFIER WITH NOISE SUPPRESSION

#33
20240105155
2024-03-28

SOUND ABSORBING DEVICES FOR PANELS WITH OPENINGS

#34
20240102690
2024-03-28

SYSTEM AND METHOD FOR ACOUSTICAL ABSOPRTION IN A HEATING, VENTILATION, AND/OR AIR CONDITIONING SYSTEM

#35
20240058558
2024-02-22

VENTILATION SOUND-DIMINISHING APPARATUS AND VENTILATION THERAPY DEVICE

#36
20240050884
2024-02-15

Sound attenuator for a separator device for gas and separator device

#37
20240040736
2024-02-01

ACOUSTICAL REDUCTION AIRFLOW DUCTS

#38
20240040735
2024-02-01

Backplane-attached acoustically reactive elements

#39
20230419940
2023-12-28

Sound Compensation Apparatus, Vehicle, Method for Sound Compensation and Method for Sound Emission

#40
20230407775
2023-12-21

Propulsion flow path duct systems and methods

#41
20230392527
2023-12-07

Sound mitigation for a duct

#42
20230383886
2023-11-30

SOUND REDUCER AND METHOD OF MAKING SAME

#43
20230349308
2023-11-02

Resonator core with spiral slits

#44
20230349122
2023-11-02

Device for attenuating underwater sound pressure and the use of such a device

#45
20230339335
2023-10-26

BROADBAND MUFFLER FOR FUEL CELL VEHICLE

#46
20230306945
2023-09-28

Electronic system with heat dissipation and noise reduction function and related acoustic filter

#47
20230304425
2023-09-28

DRONE ELIMINATION MUFFLER

#48
20230267905
2023-08-24

NOISE BARRIER AND APPARATUS COMPRISING THE NOISE BARRIER

#49
20230267904
2023-08-24

Baffling system designed for acoustic suppression

#50
20230232570
2023-07-20

Computing chassis including acoustical baffles

#51
20230162716
2023-05-25

Noise suppressor

#52
20230160325
2023-05-25

Exhaust system tuner tube to reduce standing wave

#53
20230159158
2023-05-25

AIRCRAFT LANDING GEAR BAY DOOR

#54
20230150675
2023-05-18

Oxygen Pressure Relief and Ventilation System and Method

#55
20230102336
2023-03-30

Space-saving broadband resonator having a resonator insert

#56
20230067947
2023-03-02

Silencer

#57
20230059977
2023-02-23

Hose arrangement for creating a bubble curtain in bodies of water

#58
20230024409
2023-01-26

ACOUSTIC NOISE SUPPRESSING HEAT EXCHANGERS

#59
20220412289
2022-12-29

Resonating patch and acoustic treatment cell provided with such a patch

#60
20220403765
2022-12-22

Muffler and method for making a muffler

#61
20220389882
2022-12-08

Acoustic cores and tools and methods for forming the same

#62
20220389848
2022-12-08

MUFFLER AND METHOD FOR MAKING A MUFFLER

#63
20220383844
2022-12-01

SOUND REDUCER, METHOD OF MAKING SAME, AND FLUID CONDUIT SYSTEM INCLUDING SUCH A SOUND REDUCER

#64
20220364514
2022-11-17

Nacelle liner comprising unit cell resonator networks

#65
20220314040
2022-10-06

PAPR Frame

#66
20220307399
2022-09-29

Vehicle exhaust system with silencer having exhaust jet deflector

#67
20220298941
2022-09-22

Exhaust sound tuning system and method

#68
20220298940
2022-09-22

Noise abatement system for internal combustion engines

#69
20220293076
2022-09-15

Acoustic metamaterial structure

#70
20220290600
2022-09-15

Exhaust device of engine and work machine

#71
20220275738
2022-09-01

Acoustically tuned muffler

#72
20220274714
2022-09-01

Muffler

#73
20220268186
2022-08-25

MUFFLER FOR ENGINE, AIR-COOLED ENGINE, AND WORK MACHINE

#74
20220260045
2022-08-18

Resonator insert for insertion into an intake pipe of a turbocharger, turbocharger and resonator

#75
20220246124
2022-08-04

Sound control device for mechanical devices and method of use

#76
20220240888
2022-08-04

Nozzles for amplifying and suppression of sound

#77
20220211231
2022-07-07

NOISE REDUCTION DEVICE

#78
20220205822
2022-06-30

Ultrasonic flow meter

#79
20220205385
2022-06-30

NOISE REDUCTION APPARATUS AND GENERATOR ASSEMBLY

#80
20220205377
2022-06-30

Car provided with an exhaust system with aerodynamic effect

#81
20220205376
2022-06-30

Exhaust system for an internal combustion engine

#82
20220196105
2022-06-23

MUFFLER DEVICE FOR A BICYCLE SUSPENSION SYSTEM

#83
20220178298
2022-06-09

System and method for a cab-mounted muffler assembly

#84
20220120469
2022-04-21

Acoustic resonator for fan

#85
20220099007
2022-03-31

Exhaust system

#86
20220074329
2022-03-10

Propulsion flow path duct systems and methods

#87
20220056827
2022-02-24

Method for interlocking engine exhaust sound with traveling mode and exhaust system for smart vehicle

#88
20220051649
2022-02-17

SYSTEM AND METHOD OF ABSORBING AIRBORNE NOISE IN A COMPUTING SYSTEM

#89
20220026059
2022-01-27

PULSATING COMBUSTION DEVICE WITH IMPROVED ENERGY CONVERSION EFFICIENCY AND REDUCED NOISE LEVEL

#90
20220025793
2022-01-27

Method and apparatus for converting a vehicle from a dual-in, single-out exhaust system to a dual-in, dual-out exhaust system

#91
20220020349
2022-01-20

Acoustic filler including acoustically active beads and expandable filler

#92
20210404359
2021-12-30

System for a combined spark arrestor and muffler assembly

#93
20210389023
2021-12-16

Sound attenuator for a terminal unit

#94
20210388879
2021-12-16

METHOD FOR OPERATING A COMBINED CLUTCH- AND BRAKE DEVICE OF A PUNCH PRESS

#95
20210324849
2021-10-21

MOTOR OIL PUMP ASSEMBLY, STEERING SYSTEM, AND VEHICLE

#96
20210317763
2021-10-14

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

#97
20210293210
2021-09-23

Broad-band resonance silencer, in particular for a motor vehicle engine

#98
20210280160
2021-09-09

Sound attenuator for a fluid flow line and method of manufacturing the same

#99
20210270158
2021-09-02

Muffler

#100
20210233506
2021-07-29

Soundproof structure body

#101
20210233505
2021-07-29

Acoustic system

#102
20210231036
2021-07-29

MUFFLER SYSTEM

#103
20210231035
2021-07-29

Sound attenuating engine exhaust system

#104
20210199035
2021-07-01

Muffler for engine

#105
20210183347
2021-06-17

Plates and plate assemblies for noise attenuators and other devices and methods making the same

#106
20210156400
2021-05-27

Noise abatement for air blowers

#107
20210156287
2021-05-27

Exhaust muffler

#108
20210139150
2021-05-13

Outflow valve assembly including sound absorption and aircraft including the same

#109
20210123364
2021-04-29

Sound suppressor

#110
20210113876
2021-04-22

Power adjustment device

#111
20210108551
2021-04-15

EXHAUST SYSTEM

#112
20210056945
2021-02-25

Acoustic damper

#113
20210025358
2021-01-28

Engine intake system

#114
20200410973
2020-12-31

Solid-state transducer, system, and method

#115
20200386232
2020-12-10

Compressor

#116
20200383534
2020-12-10

Sound absorption structure for air flow path in electric air flow generation device and electric vacuum

#117
20200372890
2020-11-26

Acoustic filler including acoustically active beads and expandable filler

#118
20200337510
2020-10-29

Cleaner

#119
20200329932
2020-10-22

Cleaner

#120
20200269827
2020-08-27

Noise damper for compressed air systems and a method for the production of same

#121
20200265822
2020-08-20

ACTIVE HELMHOLTZ RESONATOR WITH ACTUATED MEMBRANE

#122
20200232390
2020-07-23

Gas turbine engine component for acoustic attenuation

#123
20200211523
2020-07-02

Systems and methods for vibrational and acoustic damping with baffle structure

#124
20200152165
2020-05-14

Acoustic filler including acoustically active beads and expandable filler

#125
20200123946
2020-04-23

Drone elimination muffler

#126
20200102890
2020-04-02

Assembly comprising two juxtaposed acoustic panels in which the panels comprise a resistive face which extends as far as an end wall

#127
20200086710
2020-03-19

Blower noise suppressor for HVAC system

#128
20200079328
2020-03-12

Drying apparatus, system and method for use in an automated vehicle cleaning system

#129
20200066244
2020-02-27

Silencer

#130
20200041320
2020-02-06

Compact wide angle acoustic transducer

#131
20190353078
2019-11-21

Exhaust subsystem with fiber pipe and method of forming fiber pipe

#132
20190311703
2019-10-10

ACOUSTIC TRAUMA SYSTEM FOR LARVAL FISH

#133
20190277535
2019-09-12

Dual tube silencer for separate gas flows

#134
20190266990
2019-08-29

Helmholtz resonators with broadband capability

#135
20190264636
2019-08-29

Directionally targeted jet noise reduction system and method

#136
20190226371
2019-07-25

Muffler

#137
20190211737
2019-07-11

Muffler system

#138
20190189103
2019-06-20

Regulating or control device and method for improving a noise quality of an air-conditioning system

#139
20190172436
2019-06-06

Silencer for clutch air booster

#140
20190170393
2019-06-06

Method for producing silencing device, silencing device and air purifier

#141
20190161200
2019-05-30

Acoustic attenuation panel for an aircraft propulsion unit and propulsion unit including such a panel

#142
20190145566
2019-05-16

Noise attenuators for use with process control devices

#143
20190145297
2019-05-16

MUFFLER

#144
20190115003
2019-04-18

Sound absorber and projector

#145
20190112979
2019-04-18

Acoustic attenuation on a turbine engine wall

#146
20190107019
2019-04-11

Acoustically tuned muffler

#147
20190107018
2019-04-11

MUFFLER WITH VENTURI EXHAUST LINE

#148
20190061903
2019-02-28

Application of leading edge serration and trailing edge foam for undercarriage wheel cavity noise reduction

#149
20190061134
2019-02-28

Silencing mechanism of pneumatic tool

#150
20190041154
2019-02-07

Sound Wave Absorption Module and Device Comprising Same

#151
20190040883
2019-02-07

Method and cavity for suppression of cavity flow oscillations and acoustic loads using curved rear face

#152
20190027125
2019-01-24

Mesh assemblies, computing systems, and methods for manufacturing a mesh assembly

#153
20190019489
2019-01-17

Soundproofing structure, opening structure, cylindrical structure, window member, and partition member

#154
20190017232
2019-01-17

Vehicle power compartment and engineering vehicle provided with same

#155
20180369734
2018-12-27

QUIET GEN

#156
20180345840
2018-12-06

System and method for variable sound dampening in an adjustable vehicle seat

#157
20180340498
2018-11-29

Air cleaner of internal combustion engine

#158
20180310434
2018-10-25

Apparatus for dynamic positioning of a fan to reduce noise

#159
20180298675
2018-10-18

Window and system of windows comprising an acoustic damping device

#160
20180266301
2018-09-20

Muffler

#161
20180258891
2018-09-13

Silencing device

#162
20180202334
2018-07-19

Exhaust Muffler For Marine Engine Exhaust System

#163
20180197523
2018-07-12

Anti-acoustics streamline apparatus

#164
20180187816
2018-07-05

Noise attenuators for use with process control devices

#165
20180166060
2018-06-14

Active cancellation of a pulsating flow with a source noise reference

#166
20180163372
2018-06-14

WORK VEHICLE

#167
20180128483
2018-05-10

Damper for gas turbine

#168
20180111520
2018-04-26

System and method for variable sound dampening in an adjustable vehicle seat

#169
20180100670
2018-04-12

Airborne noise reduction system and method

#170
20180094629
2018-04-05

Pulsation damper for compressors

#171
20180073432
2018-03-15

Method and apparatus for modularized inlet silencer baffles

#172
20180052040
2018-02-22

Fluid pulse device and method of exciting gas turbine engine turomachinery components

#173
20180051608
2018-02-22

Structure of muffler

#174
20180047500
2018-02-15

Arrangement for reducing radiation of noise from liquid-cooled transformers or chokes

#175
20180038249
2018-02-08

MUFFLER WITH VENTURI EXHAUST LINE

#176
20180033418
2018-02-01

Method for masking a sound signal generated by an element of the skin of an aircraft

#177
20180030896
2018-02-01

Acoustic liners and method of shaping an inlet of an acoustic liner

#178
20180025714
2018-01-25

Sound deadening device

#179
20180018952
2018-01-18

Acoustic panels that include multi-layer facesheets

#180
20180018951
2018-01-18

Sound-absorbing mask

#181
20170335729
2017-11-23

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

#182
20170307424
2017-10-26

Compact wide angle acoustic transducer

#183
20170297384
2017-10-19

Apparatus for noise reduction of tire of vehicle

#184
20170276041
2017-09-28

Muffler device including central common active control valve

#185
20170261226
2017-09-14

Acoustic metamaterial noise control method and apparatus for ducted systems

#186
20170249933
2017-08-31

Sound attenuation device and method

#187
20170248341
2017-08-31

Sound-damping air conduction part

#188
20170241664
2017-08-24

Duct mounted sound attenuating baffle with an internally suspended mass layer

#189
20170241310
2017-08-24

Acoustic device

#190
20170229106
2017-08-10

Acoustic panel with angled corrugated core structures

#191
20170219153
2017-08-03

Sound suppression apparatus

#192
20170218830
2017-08-03

Muffler for an exhaust system

#193
20170218806
2017-08-03

Muffler

#194
20170205015
2017-07-20

Noise attenuation apparatus for fluid devices

#195
20170175690
2017-06-22

Intake sound reduction device for internal combustion engine

#196
20170175642
2017-06-22

Methods and apparatus for noise attenuation in an engine nacelle

#197
20170159520
2017-06-08

Muffler and method for manufacturing same

#198
20170145882
2017-05-25

Drone elimination muffler

#199
20170145881
2017-05-25

Vehicle exhaust system with resistive patch

#200
20170138246
2017-05-18

Exhaust system for engine

#201
20170122154
2017-05-04

Muffler for an exhaust system of an internal combustion engine

#202
20170113806
2017-04-27

Sound attenuation apparatus and method

#203
20170107909
2017-04-20

Gas ejection duct with acoustic treatment, an aircraft, and a method of fabricating such a duct

#204
20170107875
2017-04-20

Exhaust valve for muffler and muffler including the same

#205
20170101970
2017-04-13

Noise baffle for a rotary machine and method of making same

#206
20170096919
2017-04-06

Damper assembly for a combustion chamber

#207
20170092255
2017-03-30

Fuel cell system

#208
20170089239
2017-03-30

Exhaust muffler and sound deadening element

#209
20170074220
2017-03-16

Muffler

#210
20170074134
2017-03-16

Connection pipe for connecting an active muffler to an exhaust system for an internal combustion engine

#211
20170074133
2017-03-16

Exhaust gas muffler

#212
20170074132
2017-03-16

Exhaust system for internal combustion engine

#213
20170067380
2017-03-09

Exhaust Assembly

#214
20170058733
2017-03-02

Exhaust system for an internal combustion engine

#215
20170053634
2017-02-23

Suction unit

#216
20170051646
2017-02-23

Silencer

#217
20170044943
2017-02-16

Muffler for automobile

#218
20170028544
2017-02-02

Muffler for pneumatic power tool and pneumatic power tool incorporating the same

#219
20160376952
2016-12-29

EXHAUST RESONATOR FOR A TWO-STROKE ENGINE FOR USE IN A MOTORIZED FLOAT

#220
20160376930
2016-12-29

Muffler and muffling device including the same

#221
20160361796
2016-12-15

Air blast blowdown silencer system for blast pot

#222
20160195299
2016-07-07

Acoustic dispersing airflow passage

#223
20160180829
2016-06-23

Noise reducing device

#224
20160180828
2016-06-23

Acoustic abatement system for air cooled heat exchanger

#225
20160161903
2016-06-09

Housing structure, electronic apparatus, and image forming apparatus

#226
20160084801
2016-03-24

Acoustic detection in process environments

#227
20160066699
2016-03-10

Sound dampening device

#228
20150345514
2015-12-03

Acoustic treatment for an indoor HVAC component

#229
20150201730
2015-07-23

HAIR DRYER APPARATUS WITH NOISE REDUCING END CAP

#230
20150143865
2015-05-28

Device and method for construction of baffles from engine block freeze plugs

#231
20150129352
2015-05-14

Sound reduction system

#232
20150068835
2015-03-12

Muffler shell for use in the exhaust system of a vehicle

#233
20150060190
2015-03-05

Reducing noise and temperature during measurements in cryostats

#234
20140341385
2014-11-20

Dual resonator chamber with variable volume

#235
20140318162
2014-10-30

System and method for reducing noise within a refrigeration system

#236
20140299404
2014-10-09

Acoustic dispersing airflow passage

#237
20140299130
2014-10-09

Portable positive airway pressure apparatus and method for attenuating the noise emitted therefrom

#238
20140203596
2014-07-24

Acoustic insulation device for mobile vehicle

#239
20140196458
2014-07-17

Damping device and gas turbine combustor

#240
20130283841
2013-10-31

Heat exchanger for an air conditioning system

#241
20130270035
2013-10-17

Soundproofing plate which does not obstruct airflow

#242
20130076286
2013-03-28

REDUCING TONAL EXCITATIONS IN A COMPUTER SYSTEM

#243
20100251718
2010-10-07

Damping device and gas turbine combustor

#244
20090269143
2009-10-29

Vortex Induced Vibration Optimizing System

#245
20090050404
2009-02-26

Sound dampening flow channel device

#246
20090011696
2009-01-08

Ventilation device and frame system

#247
20070034446
2007-02-15

Architecture for an acoustic liner

#248
20060177275
2006-08-10

Vortex induced vibration optimizing system

#249
20060174708
2006-08-10

Machine housing component with acoustic media grille and method of attenuating machine noise

#250
20050205352
2005-09-22

Exhaust chamber comprising an envelope defining a gas circulation passage

#251
17379054
2022-03-22

PAPR frame

#252
16017660
2019-04-02

High pressure gas silencer

#253
15928899
2019-06-25

Acoustic energy mitigation for mechanical drives using baffle

#254
15405873
2018-11-13

3-D printed suppressor element

#255
15332524
2018-10-23

Acoustic liners for turbine engines

#256
15266807
2018-01-02

Muffler with double shell housing

#257
15220043
2017-10-03

Method for making contoured acoustic structures

#258
15144355
2017-04-11

Stepped acoustic structures with multiple degrees of freedom

#259
14885964
2018-08-07

Noise reduction system for in-wall HVAC systems

#260
14855958
2017-01-24

Silencer panel and system having plastic perforated side wall

#261
14855935
2017-01-17

Silencer panel having sections and related silencer duct

#262
14855918
2017-01-17

Silencer panel and system for having plastic perforated side wall and electrostatic particle removal