ClassID:

232133

H04R2207/021 - CPC Classification

Classification description:

Details of diaphragms or cones for electromechanical transducers or their suspension covered by but not provided for in or in Diaphragm extensions, not necessarily integrally formed, e.g. skirts, rims, flanges

Recent Application in this class:
#1
20260143279
2026-05-21

Speaker and Electronic Device

#2
20260059231
2026-02-26

BASS LOUDSPEAKER SYSTEM

#3
20260052344
2026-02-19

TRANSDUCER ELEMENT AND ARRAY-TYPE TRANSDUCER WITH ORTHOGONAL DIAPHRAGM MOTION

#4
20260039995
2026-02-05

LOW PROFILE LOUDSPEAKER DEVICE

#5
20250386144
2025-12-18

SPEAKER

#6
20250324204
2025-10-16

SPEAKER AND ELECTRONIC DEVICE

#7
20250203294
2025-06-19

Speaker and Electronic Device Using Same

#8
20250024194
2025-01-16

LOW PROFILE LOUDSPEAKER DEVICE

#9
20240298116
2024-09-05

DUAL-CONE SPEAKER

#10
20240284105
2024-08-22

SPEAKER

#11
20240267677
2024-08-08

HIGH-PRECISION ALIGNMENT FEATURES FOR AUDIO TRANSDUCERS

#12
20240223955
2024-07-04

SPEAKER

#13
20230403503
2023-12-14

Underwater speaker

#14
20230345158
2023-10-26

PRECISELY CONTROLLED MICROPHONE ACOUSTIC ATTENUATOR WITH PROTECTIVE MICROPHONE ENCLOSURE

#15
20230292054
2023-09-14

LOW PROFILE LOUDSPEAKER DEVICE

#16
20230276175
2023-08-31

Low profile loudspeaker device

#17
20230262394
2023-08-17

Diaphragm for sound producing device, sound producing device, and method for assembling the same

#18
20230020424
2023-01-19

Active noise reduction acoustic unit and sound-producing unit

#19
20220386031
2022-12-01

Conductive film for a sound generation device and the sound generation device

#20
20220377442
2022-11-24

Micro-filter and acoustic device

#21
20220369038
2022-11-17

Non-planar polycrystalline diamond body

#22
20220369037
2022-11-17

DIAPHRAGM FOR SOUND GENERATING DEVICE AND SOUND GENERATING DEVICE

#23
20220337954
2022-10-20

Micrometric loudspeaker

#24
20220322012
2022-10-06

LOUDSPEAKER, AND MANUFACTURING METHOD AND SOUND PRODUCTION METHOD THEREFOR

#25
20220225043
2022-07-14

NON-PLANAR DIAMOND BODY FOR A SPEAKER DOME

#26
20220167089
2022-05-26

Loudspeaker with a non-uniform suspension and an enforcement element

#27
20220007113
2022-01-06

REINFORCING PART FOR DIAPHRAGM OF SPEAKER, AND THE DIAPHRAGM

#28
20210384602
2021-12-09

Metamaterial loudspeaker diaphragm

#29
20210297785
2021-09-23

Speaker unit and speaker device

#30
20210185447
2021-06-17

Sensitive diaphragm with rim structure and sensor

#31
20200137498
2020-04-30

Loudspeaker structure

#32
20190387321
2019-12-19

DIAPHRAGM FOR AN ACOUSTIC RECEIVER, COMBINATIONS THEREOF AND METHODS THEREFOR

#33
20190342666
2019-11-07

DIAPHRAGM FOR A RECEIVER

#34
20190261091
2019-08-22

SPEAKER DIAPHRAGM, SPEAKER INCLUDING SAME, AND METHOD FOR MANUFACTURING SPEAKER DIAPHRAGM

#35
20190098412
2019-03-28

Dome tweeter

#36
20190075416
2019-03-07

Vibration diaphragm and manufacturing method thereof

#37
20190028814
2019-01-24

MEMS microphone

#38
20180367915
2018-12-20

Vibration membrane

#39
20180367914
2018-12-20

Vibration diaphragm

#40
20180367911
2018-12-20

Vibration diaphragm

#41
20180367906
2018-12-20

Vibration diaphragm

#42
20180367892
2018-12-20

Vibration diaphragm

#43
20180324527
2018-11-08

Diaphragm assembly, transducer and method of manufacture

#44
20180249258
2018-08-30

System and method for an optical MEMS transducer

#45
20180242084
2018-08-23

Variable shape surround device for a high excursion speaker drive

#46
20170347200
2017-11-30

Speaker

#47
20170289703
2017-10-05

System and method for an optical MEMS transducer

#48
20170201834
2017-07-13

Electroacoustic transducer

#49
20170180865
2017-06-22

Method for manufacturing a speaker diaphragm

#50
20170171663
2017-06-15

Compact electrodynamic loudspeaker having a convex diaphragm

#51
20170164128
2017-06-08

Method for manufacturing microphone chip

#52
20170118561
2017-04-27

MEMS device and process

#53
20170085993
2017-03-23

Low-profile loudspeaker

#54
20160295331
2016-10-06

Acoustic diaphragm

#55
20160205477
2016-07-14

Loudspeaker, electronic apparatus using same, and mobile apparatus

#56
20160142824
2016-05-19

Knurled speaker diaphragm

#57
20160105748
2016-04-14

Acoustic apparatus with diaphragm supported at a discrete number of locations

#58
20160076959
2016-03-17

Pressure sensor and manufacturing method of the same

#59
20160029128
2016-01-28

Sound producing system

#60
20160029126
2016-01-28

MEMS membrane overtravel stop

#61
20150256938
2015-09-10

Diaphragms for loudspeaker drive units

#62
20150256924
2015-09-10

MEMS device and process

#63
20150230027
2015-08-13

Acoustic transducer

#64
20150181341
2015-06-25

Three part membrane speaker

#65
20150110305
2015-04-23

Electroacoustic transducer

#66
20150075900
2015-03-19

Loudspeaker diaphragm and loudspeaker using same

#67
20130301867
2013-11-14

Loudspeaker resin molding component and loudspeaker using the same and electronic device and mobile apparatus using the loudspeaker

#68
20130039526
2013-02-14

Electrodynamic sound-emitting device

#69
20130016873
2013-01-17

W Dome Speakers

#70
20120269378
2012-10-25

Loudspeaker magnet assembly with two inner magnets comprising a central bore

#71
20120263336
2012-10-18

Loudspeaker magnet having a channel

#72
20120181105
2012-07-19

Ring shaped membrane for an electro-acoustical loudspeaker

#73
20120106776
2012-05-03

Slim speaker

#74
20110299718
2011-12-08

System for vibration confinement

#75
20110206231
2011-08-25

Electromagnetic converter

#76
20110192273
2011-08-11

Sound system in a stringed musical instrument

#77
20110155502
2011-06-30

Ring shaped membrane for an electro-acoustical loudspeaker

#78
20110026759
2011-02-03

Ring shaped membrane for an electro-acoustical loudspeaker

#79
20100119095
2010-05-13

Flat speaker

#80
20090226028
2009-09-10

Loudspeaker, Speaker Diaphragm, and Suspension

#81
20090214075
2009-08-27

Loudspeaker

#82
20070195986
2007-08-23

Diaphragms for Loudspeaker Drive Units For Microphones

#83
20050036647
2005-02-17

Acoustic transducer with mechanical balancing

#84
18445073
2024-02-20

Radially arcuated unistructural speaker cone with segmented dome

#85
14960615
2017-09-12

Loudspeaker with sound dispersion lens

#86
14887282
2016-10-04

Package-integrable high sound quality moving coil loudspeaker structure