H04R2231/003 - CPC Classification Index

ClassID:

232173 ⎘

H04R2231/003 - CPC Classification

Classification description:

Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by , not provided for in its subgroups Manufacturing aspects of the outer suspension of loudspeaker or microphone diaphragms or of their connecting aspects to said diaphragms

Recent Application in this class:

20250280253

2025-09-04

WIRE DAMPER OF LOUDSPEAKER WITH YARNS AT BOTH SIDES OF A WIRE ASSEMBLY BEING IN AN ARC FORM AND THE METHOD FOR MANUFACTURING THE SAME

20250220356

2025-07-03

SYSTEMS AND METHODS FOR STABILIZING A PLAYBACK DEVICE

20230421960

2023-12-28

SPEAKER AND METHOD OF PRODUCING THE SAME

20230345158

2023-10-26

PRECISELY CONTROLLED MICROPHONE ACOUSTIC ATTENUATOR WITH PROTECTIVE MICROPHONE ENCLOSURE

20230319493

2023-10-05

Contact hearing device and retention structure materials

20230199416

2023-06-22

Micro transducer molding

20220103954

2022-03-31

Sensing device and method for packaging the same

20210392441

2021-12-16

Piezoelectric MEMS microphone

20210297800

2021-09-23

Micro transducer molding

#10

20210168515

2021-06-03

Composite diaphragms having balanced stress

#11

20210112355

2021-04-15

Dimensional consistency of miniature loudspeakers

#12

20210014625

2021-01-14

Composite electrode, acoustic sensor using the same, and manufacturing method thereof

#13

20200396551

2020-12-17

Contact hearing device and retention structure materials

#14

20200283290

2020-09-10

Sensor with a membrane electrode, a counterelectrode, and at least one spring

#15

20200213771

2020-07-02

Piezoelectric microphone

#16

20200213770

2020-07-02

Piezoelectric microphone

#17

20200068315

2020-02-27

Method of fabricating a miniature device having an acoustic diaphragm

#18

20200045487

2020-02-06

Speaker

#19

20200015018

2020-01-09

Injection molding method for product with elastic connection sheet, and loudspeaker and electronic apparatus

#20

20190373371

2019-12-05

Diaphragm for producing sound and speaker using same

#21

20190373369

2019-12-05

Diaphragm for producing sound and speaker using same

#22

20190342669

2019-11-07

Symmetrical dual-edge loudspeaker

#23

20190289386

2019-09-19

Pneumatic tweeter unit having improved sound diaphragm and structure

#24

20190158960

2019-05-23

Sound generation device and preparation method of metal plastic part

#25

20190124437

2019-04-25

Damper and speaker apparatus

#26

20190082262

2019-03-14

Continuous surround

#27

20190052971

2019-02-14

Acoustic transducer with vibration damping

#28

20180338208

2018-11-22

Microphone and manufacturing method thereof

#29

20180338207

2018-11-22

Method of fabricating a miniature device having an acoustic diaphragm

#30

20180324527

2018-11-08

Diaphragm assembly, transducer and method of manufacture

#31

20180317033

2018-11-01

MEMS microphone and method for manufacturing the same

#32

20180295450

2018-10-11

Transducer diaphragm

#33

20180270596

2018-09-20

LOUDSPEAKER-DIAPHRAGM AND LOUDSPEAKER INCLUDING THE SAME

#34

20180213330

2018-07-26

Electronic device and loudspeaker thereof

#35

20180160230

2018-06-07

Vibrating film and vibrating film assembling process

#36

20180041838

2018-02-08

Diaphragm assembly and loudspeaker having same

#37

20170280263

2017-09-28

IN-PLANE OVERTRAVEL STOPS FOR MEMS MICROPHONE

#38

20170257704

2017-09-07

Electrodynamic sound transducer

#39

20170245056

2017-08-24

Transducer diaphragm

#40

20170238086

2017-08-17

Damper and speaker apparatus

#41

20170180864

2017-06-22

Center-fixed MEMS microphone membrane

#42

20170180837

2017-06-22

Sound emitter device

#43

20170171663

2017-06-15

Compact electrodynamic loudspeaker having a convex diaphragm

#44

20170145629

2017-05-25

Water-resistant composition

#45

20170078800

2017-03-16

Fabricating an integrated loudspeaker piston and suspension

#46

20170078799

2017-03-16

Transducer diaphragm

#47

20170013340

2017-01-12

Speaker

#48

20160373874

2016-12-22

In-plane overtravel stops for MEMS microphone

#49

20160366767

2016-12-15

Printed circuit board, waterproof microphone and production process thereof

#50

20160330544

2016-11-10

Condenser microphone unit, condenser microphone, and method of manufacturing condenser microphone unit

#51

20160286317

2016-09-29

Capacitive silicon microphone and fabrication method thereof

#52

20160241963

2016-08-18

Earphone and method for producing an earphone

#53

20160225362

2016-08-04

Acoustic device

#54

20160205487

2016-07-14

Vibration membrane assembly for speaker, speaker and method for producing the assembly

#55

20160205476

2016-07-14

Vibrating panel device for electromagnetic vibrator and manufacture method thereof

#56

20160119717

2016-04-28

Suspension for acoustic device

#57

20160118032

2016-04-28

Acoustic device suspension

#58

20160112806

2016-04-21

Method of manufacturing a microphone

#59

20160112785

2016-04-21

Microphone and method of manufacturing the same

#60

20160044418

2016-02-11

Loudspeaker diaphragm

#61

20160021460

2016-01-21

Sound transducer

#62

20160014523

2016-01-14

Speaker assembly

#63

20160007125

2016-01-07

Open top back plate optical microphone

#64

20150382111

2015-12-31

VOICE COIL FORMER STIFFENER

#65

20150341725

2015-11-26

Electroacoustic transducer

#66

20150304760

2015-10-22

Earphone with passive radiator

#67

20150181343

2015-06-25

Vibration unit for acoustic arrangement

#68

20150181341

2015-06-25

Three part membrane speaker

#69

20150156572

2015-06-04

Speaker and its production method

#70

20150146912

2015-05-28

Moving-coil electroacoustic transducer

#71

20150110305

2015-04-23

Electroacoustic transducer

#72

20150110303

2015-04-23

Acoustic unit, loudspeaker and acoustic module having the same, and manufacturing method thereof

#73

20150086963

2015-03-26

Audio demonstration kit

#74

20150061048

2015-03-05

System and method for packaged MEMS device having embedding arrangement, MEMS die, and grille

#75

20140343657

2014-11-20

Atraumatic electrode lead

#76

20140140543

2014-05-22

Micro-electroacoustic device

#77

20130306397

2013-11-21

Acoustic diaphragm suspending

#78

20130294640

2013-11-07

Loudspeaker, video device, and portable information processing apparatus

#79

20130064413

2013-03-14

Acoustic loudspeaker

#80

20130039526

2013-02-14

Electrodynamic sound-emitting device

#81

20130016872

2013-01-17

Voice coil former stiffener

#82

20120237076

2012-09-20

Speaker diaphragm, and speaker and handheld terminal device using said speaker diaphragm

#83

20120170778

2012-07-05

Acoustic transducer

#84

20120160598

2012-06-28

Acoustic diaphragm suspending

#85

20110299716

2011-12-08

Flat diaphragm loudspeaker

#86

20110255718

2011-10-20

Piezoelectric speaker, piezoelectric audio device employing piezoelectric speaker, and sensor with alert device attached

#87

20110135141

2011-06-09

Speaker device

#88

20110044489

2011-02-24

Loudspeaker, video device, and portable information processing apparatus

#89

20110019865

2011-01-27

Speaker

#90

20100303276

2010-12-02

LOUDSPEAKER SURROUND MOUNT

#91

20100172537

2010-07-08

LOUDSPEAKER WITH REAR SURROUND SUPPORT

#92

20090028368

2009-01-29

Diaphragm and sound output apparatus

#93

20080212409

2008-09-04

Membrane for a MEMS condenser microphone

#94

20070145637

2007-06-28

Method of manufacturing speaker edge member

#95

20070102231

2007-05-10

Connecting sheet of paper cone

#96

20070081693

2007-04-12

Insert molded surround with mechanical support

#97

20070071274

2007-03-29

Insert moulded surround with integrated lead-out wires

#98

20060177091

2006-08-10

Loudspeaker and method of manufacturing the same

#99

16252751

2019-11-05

Thin speaker with a voice coil having a damper function