ClassID:

232176

H04R2307/023 - CPC Classification

Classification description:

Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by or , not provided for in any of its subgroups Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials

Recent Application in this class:
#1
20260138863
2026-05-21

LOUDSPEAKER COMPRISING A MICRO-ELECTROMECHANICAL UNIT

#2
20260075365
2026-03-12

ACOUSTICAL TRANSDUCER COMPOSITE GLASS PANEL

#3
20260035233
2026-02-05

DIAPHRAGM AND MEMS MICROPHONE

#4
20260032390
2026-01-29

Diaphragm for Speaker and Speaker Using Same

#5
20260032389
2026-01-29

Conductive diaphragm and speaker using same

#6
20250386142
2025-12-18

Reinforced dome and Loudspeaker Using Same

#7
20250317689
2025-10-09

DIAPHRAGM WITH DEFORMATION STRUCTURES TO REDUCE VIBRATION MAGNITUDE AT RESONANCE FREQUENCY

#8
20250260931
2025-08-14

METHOD FOR MANUFACTURING LOUDSPEAKER DIAPHRAGM, LOUDSPEAKER, AND ELECTRONIC DEVICE

#9
20250247652
2025-07-31

GLASS DIAPHRAGM AND EXCITER-ATTACHED GLASS DIAPHRAGM

#10
20250227418
2025-07-10

GLASS DIAPHRAGM MODULE

#11
20250227408
2025-07-10

GLASS DIAPHRAGM EQUIPPED WITH EXCITER, CONTROL SYSTEM FOR GLASS DIAPHRAGM EQUIPPED WITH EXCITER, AND CONTROL PROGRAM FOR GLASS DIAPHRAGM EQUIPPED WITH EXCITER

#12
20250203291
2025-06-19

DOME AND DIAPHRAGM ASSEMBLY FOR SOUND PRODUCING APPARATUS, SOUND PRODUCING APPARATUS, AND ELECTRONIC DEVICE

#13
20250203272
2025-06-19

AUDIO SPEAKER

#14
20250133344
2025-04-24

Diaphragm for Speaker

#15
20250133319
2025-04-24

ACOUSTIC TRANSDUCER

#16
20250106568
2025-03-27

DIAMOND CANTILEVER-BASED OPTICAL MICROPHONES AND RELATED SYSTEMS AND METHODS

#17
20250088799
2025-03-13

VIBRATION DEVICE AND VIBRATION METHOD

#18
20250080914
2025-03-06

DIAPHRAGM AND ELECTROACOUSTIC TRANSDUCER

#19
20250074164
2025-03-06

GLASS-DIAPHRAGM-EQUIPPED VEHICLE BODY STRUCTURE

#20
20250030987
2025-01-23

MICROELECTROMECHANICAL DEVICE, MICROELECTROMECHANICAL MICROPHONE AND METHOD FOR PRODUCING A MICROELECTROMECHANICAL DEVICE

#21
20240429324
2024-12-26

SELECTIVE HYDROPHOBIC LAYER REMOVAL USING UV IRRADIATION WITH NON-ALIGNED MASK

#22
20240323612
2024-09-26

Audio transducers

#23
20240314478
2024-09-19

DIAPHRAGM WITH EXCITER, AND VEHICLE WINDOW GLASS

#24
20240251214
2024-07-25

DIAPHRAGM, SOUND GENERATION DEVICE, AND METHOD FOR MANUFACTURING SOUND GENERATION DEVICE

#25
20240244378
2024-07-18

Speaker

#26
20240236570
2024-07-11

PANEL VIBRATION TYPE SOUND GENERATING DISPLAY DEVICE

#27
20240230400
2024-07-11

MICROELECTROMECHANICAL ACOUSTIC SENSOR WITH MEMBRANE ETCH RELEASE STRUCTURES AND METHOD OF FABRICATION

#28
20240223964
2024-07-04

VIBRATION APPARATUS AND APPARATUS INCLUDING THE SAME

#29
20240171913
2024-05-23

Sealed dual membrane structure and device including the same

#30
20240147161
2024-05-02

SPEAKERS

#31
20240147142
2024-05-02

SPEAKERS

#32
20240133736
2024-04-25

MICROELECTROMECHANICAL ACOUSTIC SENSOR WITH MEMBRANE ETCH RELEASE STRUCTURES AND METHOD OF FABRICATION

#33
20240117154
2024-04-11

VIBRATING DIAPHRAGM OF SOUND-PRODUCING APPARATUS AND SOUND-PRODUCING APPARATUS

#34
20230412986
2023-12-21

Audio transducers

#35
20230353949
2023-11-02

Silicon-Based Microphone Device And Electronic Device

#36
20230292050
2023-09-14

LOUDSPEAKER DIAPHRAGM, LOUDSPEAKER, ELECTRONIC DEVICE, MOVABLE BODY, AND METHOD OF MANUFACTURING LOUDSPEAKER DIAPHRAGM

#37
20230276177
2023-08-31

TRANSPARENT ELECTROSTATIC TRANSDUCERS

#38
20230191745
2023-06-22

GLASS PLATE STRUCTURE, DIAPHRAGM, AND OPENING MEMBER

#39
20230095319
2023-03-30

Relating to audio transducers

#40
20220417669
2022-12-29

GRAPHENE TRANSDUCERS

#41
20220369038
2022-11-17

Non-planar polycrystalline diamond body

#42
20220363034
2022-11-17

Glass sheet composite

#43
20220225043
2022-07-14

NON-PLANAR DIAMOND BODY FOR A SPEAKER DOME

#44
20220217470
2022-07-07

Vibration device

#45
20220150629
2022-05-12

Panel vibration type sound generating display device

#46
20220032856
2022-02-03

Interior component of a vehicle

#47
20210392453
2021-12-16

Electroacoustic transduction film and manufacturing method thereof, electroacoustic transducer, flexible display, vocal cord microphone, sensor for musical instrument

#48
20210385580
2021-12-09

Diaphragm for electroacoustic transducer

#49
20210337316
2021-10-28

Transparent electrostatic transducers

#50
20210321198
2021-10-14

Acoustic transducer including a modified membrane

#51
20210211820
2021-07-08

Non-dispensing manufacturing process for making speaker and speaker thereof

#52
20210099808
2021-04-01

Vibration module, electronic device, and method of controlling electronic device

#53
20210092524
2021-03-25

VIBRATION PLATE HAVING REINFORCED STRUCTURAL ELEMENT AND SPEAKER USING THE SAME

#54
20210051410
2021-02-18

Audio transducers

#55
20200336828
2020-10-22

Distributed mode loudspeaker actuator including patterned electrodes

#56
20200280804
2020-09-03

Audio transducers

#57
20200223187
2020-07-16

Glass sheet composite, and diaphragm

#58
20200213795
2020-07-02

Dome material, diaphragm and speaker

#59
20200213766
2020-07-02

Speaker

#60
20200186938
2020-06-11

Nanocomposite graphene polymer membrane assembly, and manufacturing method thereof

#61
20200154208
2020-05-14

Sound generator

#62
20200107125
2020-04-02

Panel vibration type sound generating display device

#63
20200068329
2020-02-27

Manufacturing method for diamond-like carbon vibrating diaphragm and loudspeaker

#64
20200068328
2020-02-27

Diaphragm structure and method of manufacturing the same

#65
20200059738
2020-02-20

Fiber laser microphones with graphene diaphragms

#66
20200039816
2020-02-06

MEMS microphone device and electronics apparatus

#67
20200021916
2020-01-16

Glass sheet composite

#68
20200015016
2020-01-09

Acoustic diaphragm including graphene and acoustic device employing the same

#69
20200015009
2020-01-09

Distributed mode loudspeaker actuator including patterned electrodes

#70
20190387322
2019-12-19

Glass sheet composite

#71
20190306627
2019-10-03

Membrane plate structure for generating sound waves

#72
20190297423
2019-09-26

Oscillatory component for loudspeakers, loudspeaker comprising same, and mobile device equipped with said loudspeaker

#73
20190238991
2019-08-01

Diaphragm and sounding device

#74
20190230445
2019-07-25

SPEAKER

#75
20190215607
2019-07-11

Actuator fixing device and panel vibration type sound-generating display device including the same

#76
20190182590
2019-06-13

Distributed mode loudspeaker actuator including patterned electrodes

#77
20190166430
2019-05-30

Audio transducers and devices incorporating the same

#78
20190058955
2019-02-21

Acoustic apparatus and associated methods

#79
20190052963
2019-02-14

Panel vibration type display device for generating sound

#80
20190045306
2019-02-07

Audio transducers

#81
20190030862
2019-01-31

Glass sheet composite

#82
20180343522
2018-11-29

Panel vibration type sound generating display device

#83
20180327252
2018-11-15

Device and method of fabricating such a device

#84
20180324526
2018-11-08

Loudspeaker diaphragm, loudspeaker, and production method for loudspeaker diaphragm

#85
20180317017
2018-11-01

Micro-speaker, speaker device and electronic apparatus

#86
20180302721
2018-10-18

Carbon fiber dome and manufacturing method for same

#87
20180302720
2018-10-18

Carbon Fiber Dome

#88
20180302719
2018-10-18

CARBON FIBER DOME AND METHOD FOR MANUFACTURING THE SAME

#89
20180279054
2018-09-27

Cylindrical contact-type microphone

#90
20180270597
2018-09-20

Loudspeaker-diaphragm and loudspeaker including the same

#91
20180270581
2018-09-20

MEMBRANE PLATE MADE OF CERAMIC MATERIAL

#92
20180270578
2018-09-20

VIBRATION DIAPHRAGM AND SPEAKER DEVICE

#93
20180254147
2018-09-06

Face Down MLCC

#94
20180227654
2018-08-09

Integrated speaker and light

#95
20180160248
2018-06-07

Electroacoustic transduction film and manufacturing method thereof, electroacoustic transducer, flexible display, vocal cord microphone, sensor for musical instrument

#96
20180139542
2018-05-17

Piezoelectric speaker and method for forming the same

#97
20180137981
2018-05-17

Face Down MLCC

#98
20180124518
2018-05-03

Diaphragm dome, method for manufacturing the same and speaker

#99
20180073917
2018-03-15

Flexible conductive diaphragm, flexible vibration sensor and preparation method and application thereof

#100
20180063648
2018-03-01

Micro-sound detection analysis device and array audio signal processing method based on same

#101
20180053813
2018-02-22

Organic light emitting display device including a sound generating apparatus

#102
20180041838
2018-02-08

Diaphragm assembly and loudspeaker having same

#103
20170289691
2017-10-05

Vibrating diaphragm structure and method of manufacture thereof

#104
20170289690
2017-10-05

VIBRATING DIAPHRAGM STRUCTURE AND METHOD OF MANUFACTURE THEREOF

#105
20170280246
2017-09-28

Panel vibration type display device for generating sound

#106
20170280217
2017-09-28

Display device for generating sound by vibrating panel

#107
20170280216
2017-09-28

Panel vibration type sound generating display device

#108
20170280215
2017-09-28

Actuator fixing device and panel vibration type sound-generating display device including the same

#109
20170251318
2017-08-31

Method of forming an acoustic transducer

#110
20170238110
2017-08-17

Silica gel vibrating diaphragm and method for fabricating the same

#111
20170155993
2017-06-01

Wireless Earpieces Utilizing Graphene Based Microphones and Speakers

#112
20170145629
2017-05-25

Water-resistant composition

#113
20170070809
2017-03-09

Electronic device including acoustically isolated passive radiator and related methods

#114
20170026753
2017-01-26

Devices and methods for a high performance electromagnetic speaker based on monolayers

#115
20170013361
2017-01-12

Microphone diaphragm

#116
20160360310
2016-12-08

Piezoelectric ceramic speaker and dual-band earphone having thereof

#117
20160345083
2016-11-24

Compact electroacoustic transducer and loudspeaker system and method of use thereof

#118
20160309261
2016-10-20

Housing of electronic device and speaker

#119
20160309259
2016-10-20

Electrically conductive membrane pump system

#120
20160295338
2016-10-06

MICROPHONE DIAPHRAGM

#121
20160295331
2016-10-06

Acoustic diaphragm

#122
20160295330
2016-10-06

Acoustic diaphragm

#123
20160234603
2016-08-11

Loudspeaker having electrically conductive membrane transducers

#124
20160212542
2016-07-21

Anti-impact silicon based MEMS microphone, a system and a package with the same

#125
20160198265
2016-07-07

Ribbon support system for electrodynamic microphone

#126
20160173967
2016-06-16

Condenser microphone

#127
20160146039
2016-05-26

Acoustic attenuation with adaptive impedance

#128
20160134971
2016-05-12

Diaphragm for loudspeaker, loudspeaker, electronic apparatus, and mobile apparatus

#129
20160044421
2016-02-11

Piezoelectric speaker device

#130
20160037262
2016-02-04

Vibrating body for speaker device and speaker device

#131
20160031701
2016-02-04

Micromechanical structure and method for fabricating the same

#132
20160014521
2016-01-14

Transducer and electronic device including the same

#133
20150381078
2015-12-31

MEMS device and method for manufacturing the MEMS device

#134
20150365753
2015-12-17

Optical microphone and method using the same

#135
20150319532
2015-11-05

Diaphragm, loudspeaker using diaphragm, electronic device and mobile device using loudspeaker, and method for producing diaphragm

#136
20150310848
2015-10-29

Method for manufacturing compound diaphragm

#137
20150208174
2015-07-23

Electrically conductive membrane pump/transducer and methods to make and use same

#138
20150110987
2015-04-23

Free-standing non-planar polycrystalline synthetic diamond components and method of fabrication

#139
20140270271
2014-09-18

MEMS acoustic transducer, MEMS microphone, MEMS microspeaker, array of speakers and method for manufacturing an acoustic transducer

#140
20140241567
2014-08-28

Audio speaker with sandwich-structured composite diaphragm

#141
20140161282
2014-06-12

Substantially planate parametric emitter and associated methods

#142
20140054104
2014-02-27

Speaker diaphragm and its manufacturing method

#143
20130309400
2013-11-21

Method for making diaphragm

#144
20130301856
2013-11-14

Piezoelectric speaker having weight and method of producing the same

#145
20130177183
2013-07-11

VIBRATION SPEAKER

#146
20130177182
2013-07-11

VIBRATION SPEAKER

#147
20120314888
2012-12-13

Speaker assembly

#148
20120257781
2012-10-11

Speaker diaphragm, speaker dust cap, speaker frame, speaker using said parts, and electronic equipment and device using said speaker

#149
20120148084
2012-06-14

Audio speaker assembly

#150
20120106772
2012-05-03

SPEAKER DEVICE

#151
20120033837
2012-02-09

Speaker unit

#152
20110240401
2011-10-06

Carbonaceous acoustic diaphragm and method for manufacturing the same

#153
20110237733
2011-09-29

Waterproofing loudspeaker cones

#154
20110188699
2011-08-04

WOVEN OR KNITTED FABRIC, DIAPHRAGM FOR SPEAKER, AND SPEAKER

#155
20110158460
2011-06-30

COMPOSITE ACOUSTIC TRANSDUCERS

#156
20110158446
2011-06-30

Thermoacoustic device with flexible fastener and loudspeaker using the same

#157
20110116677
2011-05-19

Diaphragm and loudspeaker using the same

#158
20110096952
2011-04-28

Diaphragm, method making the same and loudspeaker using the same

#159
20110075881
2011-03-31

Diaphragm and loudspeaker using the same

#160
20100296677
2010-11-25

Flat panel piezoelectric loudspeaker

#161
20100119089
2010-05-13

Speaker assembly

#162
20090242320
2009-10-01

Waterproofing loudspeaker cones

#163
20080152186
2008-06-26

Method of making composite acoustic transducers

#164
20080124566
2008-05-29

Composite Material Comprising Ultra-Hard Particles Embedded in a Metal or Metal Alloy Matrix and Diaphragm Made Thereof

#165
20070274555
2007-11-29

Acoustic ribbon transducer arrangements

#166
20070223773
2007-09-27

Methods for forming and using thin film ribbon microphone elements and the like

#167
20070195986
2007-08-23

Diaphragms for Loudspeaker Drive Units For Microphones

#168
20070190881
2007-08-16

Woven or knitted fabric, diaphragm for speaker, and speaker

#169
20070154057
2007-07-05

Speaker device

#170
20070042185
2007-02-22

Diamond diaphragm

#171
20060249327
2006-11-09

Vibration system part for speaker device and manufacturing method thereof

#172
20060193488
2006-08-31

Diaphragm and speaker

#173
20060174823
2006-08-10

Surface acoustic wave devices and associated casting methods

#174
20060133639
2006-06-22

Diaphragm for loudspeaker - magnesium alloy base and multi-layers ceramic structure

#175
20060104473
2006-05-18

Loudspeaker diaphragm systems

#176
20050232457
2005-10-20

Speaker-use diaphragm and speaker

#177
20050122189
2005-06-09

Cast diamond tools and formation thereof by chemical vapor deposition

#178
20050041828
2005-02-24

Magnesium diaphragm, method of manufacturing the same, and speaker apparatus

#179
19248541
2026-01-06

Composite material for acoustic transducer diaphragm

#180
15676340
2020-03-03

Thermoacoustic transducer and methods for resonant generation and amplification of sound emission

#181
14454956
2015-10-27

Composite vibration diaphragm and its fabrication method