ClassID:

231985

H04R7/24 - CPC Classification

Classification description:

Diaphragms for electromechanical transducers ; Cones; Mounting or tensioning of diaphragms or cones Tensioning by means acting directly on free portions of diaphragm or cone

Recent Application in this class:
#1
20250324202
2025-10-16

MEMS DEVICE

#2
20250080915
2025-03-06

MEMS microphone chip

#3
20240323612
2024-09-26

Audio transducers

#4
20230412986
2023-12-21

Audio transducers

#5
20230328425
2023-10-12

SOUND GENERATING DEVICE MODULE

#6
20230095319
2023-03-30

Relating to audio transducers

#7
20220337954
2022-10-20

Micrometric loudspeaker

#8
20210377664
2021-12-02

Planar loudspeaker

#9
20210266659
2021-08-26

Miniature moving coil loudspeaker with ferrofluid

#10
20210241749
2021-08-05

Ultrasonic transducers

#11
20210195350
2021-06-24

Subcutaneous microphone having a central pillar

#12
20210185448
2021-06-17

MEMS capacitive microphone

#13
20210051410
2021-02-18

Audio transducers

#14
20210051409
2021-02-18

Piezoelectric MEMS microphone

#15
20210044902
2021-02-11

LIGHTWEIGHT SPEAKER DIAPHRAGM

#16
20200389738
2020-12-10

HIGH-QUALITY ELECTROMAGNETIC SPEAKER HAVING IMPROVED ACCURACY OF AIR GAP

#17
20200280804
2020-09-03

Audio transducers

#18
20200213743
2020-07-02

ELECTRO-ACOUSTIC DRIVER HAVING COMPLIANT DIAPHRAGM WITH STIFFENING ELEMENT

#19
20200019219
2020-01-16

Slim electronic devices and audio transducers incorporated therein

#20
20190253808
2019-08-15

Moving-coil loudspeaker

#21
20190166430
2019-05-30

Audio transducers and devices incorporating the same

#22
20190141451
2019-05-09

Acoustic apparatus with diaphragm supported at a discrete number of locations

#23
20190098413
2019-03-28

Ultrasonic transducer with tensioned film

#24
20190082273
2019-03-14

Optical fiber sound pickup device and method for equipment for manufacturing the same

#25
20190045306
2019-02-07

Audio transducers

#26
20180367918
2018-12-20

High aspect ratio moving coil transducer

#27
20180301138
2018-10-18

Ultrasonic transducers

#28
20180295450
2018-10-11

Transducer diaphragm

#29
20180213334
2018-07-26

Microelectromechanical microphone

#30
20180192199
2018-07-05

Electro-acoustic driver having compliant diaphragm with stiffening element

#31
20180103322
2018-04-12

Space frame reinforced tweeter dome

#32
20180014126
2018-01-11

System and method for a loudspeaker with a diaphragm

#33
20180014096
2018-01-11

Electroacoustic transducer

#34
20170374469
2017-12-28

Acoustic apparatus with diaphragm supported at a discrete number of locations

#35
20170359656
2017-12-14

ELECTRO-ACOUSTIC DRIVER AND BOBBIN THEREFORE

#36
20170359655
2017-12-14

Electro-acoustic driver having compliant diaphragm with stiffening element

#37
20170289689
2017-10-05

Method for reprocessing vibrating diaphragm, vibrating diaphragm and telephone receiver

#38
20170245056
2017-08-24

Transducer diaphragm

#39
20170201834
2017-07-13

Electroacoustic transducer

#40
20170180864
2017-06-22

Center-fixed MEMS microphone membrane

#41
20160381461
2016-12-29

Acoustic Driver Tensioner

#42
20160360313
2016-12-08

Distributed mode louspeaker damping oscillations within exciter feet

#43
20160277847
2016-09-22

MEMS and/or NEMS dynamic pressure sensor with improved performances and microphone comprising such a sensor

#44
20160219371
2016-07-28

Loudspeaker

#45
20160105748
2016-04-14

Acoustic apparatus with diaphragm supported at a discrete number of locations

#46
20160031701
2016-02-04

Micromechanical structure and method for fabricating the same

#47
20160029128
2016-01-28

Sound producing system

#48
20140294226
2014-10-02

Transducer apparatus with a tension actuator

#49
20140044287
2014-02-13

Flat type speaker having damper-lead plate of PCB voice coil plate

#50
20140038335
2014-02-06

Integrated acoustic transducer in MEMS technology, and manufacturing process thereof

#51
20140037114
2014-02-06

Flat type speaker having vibration-lead plate attached on top of vibration plate

#52
20130294640
2013-11-07

Loudspeaker, video device, and portable information processing apparatus

#53
20130062710
2013-03-14

Micro electrical mechanical system with bending deflection of backplate structure

#54
20130051587
2013-02-28

Piezoelectric microphone fabricated on glass

#55
20120279796
2012-11-08

PASSIVE RADIATOR

#56
20120106776
2012-05-03

Slim speaker

#57
20120087525
2012-04-12

Speaker, hearing aid, inner-ear headphone, portable information processing device, and AV device

#58
20110293114
2011-12-01

Condenser microphone unit

#59
20110206231
2011-08-25

Electromagnetic converter

#60
20110188698
2011-08-04

Electrodynamic transducer, in particular of the loudspeaker type with ferrofluid suspension and related devices

#61
20110044489
2011-02-24

Loudspeaker, video device, and portable information processing apparatus

#62
20100260371
2010-10-14

Systems and methods for acousto-haptic speakers

#63
20100158280
2010-06-24

Integrated acoustic transducer in MEMS technology, and manufacturing process thereof

#64
20100158279
2010-06-24

Integrated acoustic transducer obtained using MEMS technology, and corresponding manufacturing process

#65
20090316948
2009-12-24

Speaker device

#66
20090217509
2009-09-03

Method of manufacturing a speaker

#67
20080273739
2008-11-06

Ribbon transducer with improved excursion and dispersion characteristics

#68
20080240488
2008-10-02

Speaker

#69
20080205688
2008-08-28

Speaker

#70
20080175428
2008-07-24

Loudspeaker actuator

#71
20080166010
2008-07-10

Overlapping surround roll for loudspeaker

#72
20080025550
2008-01-31

Magnetic membrane suspension

#73
20070140519
2007-06-21

Speaker, module using the same, electronic equipment and device, and speaker producing method

#74
20070133838
2007-06-14

Acoustic diaphragm, and method of fabricating acoustic diaphragm

#75
20060285718
2006-12-21

Speaker

#76
20060177090
2006-08-10

Electro-acoustic transducer

#77
14994449
2016-11-15

Analog area speaker panel with precision placement and direction of audio radiation