Patents-Review.com
ClassID:

232137 ⎘

H04R2209/024 - CPC Classification

Classification description:

Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by but not provided for in any of its subgroups Manufacturing aspects of the magnetic circuit of loudspeaker or microphone transducers

Recent Application in this class:
#1
20260156418
2026-06-04

Loudspeaker

 #2
20250203293
2025-06-19

PLANAR VOICE COIL, PLANAR VOICE COIL SUBSTRATE, AND MANUFACTURING METHOD FOR PLANAR VOICE COIL SUBSTRATE

 #3
20250203292
2025-06-19

SPEAKER

 #4
20250119690
2025-04-10

IMPROVED LOUDSPEAKER AND METHOD OF MANUFACTURE

 #5
20250030983
2025-01-23

SOUND ACTUATOR WITH ROBUST POSITIONING OF MAGNETIC POLE PLATE PACKETS

 #6
20240373170
2024-11-07

LOUDSPEAKER STRUCTURE AND LOUDSPEAKER DEVICE

 #7
20240244380
2024-07-18

Multi-input-driving loudspeaker

 #8
20240223958
2024-07-04

SOUND PRODUCING DEVICE

 #9
20240223956
2024-07-04

TRANSDUCERS AND MANUFACTURING METHODS THEREOF

 #10
20240064479
2024-02-22

Balanced armature receiver having damping compound-locating structure

 #11
20240022845
2024-01-18

SPEAKER DEVICE

 #12
20240007796
2024-01-04

Dual function transducer

 #13
20230403512
2023-12-14

SPEAKER WITH IMPROVED FREQUENCY RESPONSE AND RELATED ELECTRONIC SOUND SIGNAL CIRCUIT, SOUND SYSTEM AND PRODUCTION METHOD

 #14
20230362536
2023-11-09

LOUDSPEAKER

 #15
20230232156
2023-07-20

Double-sided speaker

 #16
20230199395
2023-06-22

Speaker

 #17
20230148010
2023-05-11

Speaker and electronic device

 #18
20230117602
2023-04-20

IMPROVEMENTS IN AND RELATING TO LOUDSPEAKER MAGNET ASSEMBLIES

 #19
20230019916
2023-01-19

Loudspeaker with a fin-reinforced voice coil structure

 #20
20220345826
2022-10-27

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

 #21
20220248143
2022-08-04

Multi-input-driving loudspeaker

 #22
20220240021
2022-07-28

Multi-input-driving loudspeaker

 #23
20220210572
2022-06-30

Speaker

 #24
20220141592
2022-05-05

Loudspeaker motor with improved linearity

 #25
20210168480
2021-06-03

Speaker device

 #26
20210127211
2021-04-29

Electro-magnetic motor geometry with radial ring and axial pole magnet

 #27
20210099805
2021-04-01

Dual function transducer

 #28
20210099804
2021-04-01

Dual function transducer

 #29
20210029464
2021-01-28

Speaker includes a second fixing arm of an elastic supporting member sandwiched between two independently controlled voice coils

 #30
20200382857
2020-12-03

Wearable audio device

 #31
20200169815
2020-05-28

Apparatus with surface to be displaced

 #32
20200112781
2020-04-09

Speaker device

 #33
20200107112
2020-04-02

SINGLE-MAGNET DOUBLE-TONE-CIRCUIT COAXIAL LOUDSPEAKER

 #34
20200084548
2020-03-12

Armature and a transducer comprising the armature

 #35
20200045440
2020-02-06

Sound generator

 #36
20200037078
2020-01-30

Loudspeaker unit with multiple drive units

 #37
20190289399
2019-09-19

Apparatus for generating vibration

 #38
20190289386
2019-09-19

Pneumatic tweeter unit having improved sound diaphragm and structure

 #39
20190230442
2019-07-25

Acoustic device

 #40
20190215612
2019-07-11

Speaker

 #41
20190141454
2019-05-09

Sound Transducer

 #42
20190091725
2019-03-28

Vibration actuator

 #43
20190028809
2019-01-24

Apparatus for generating vibration

 #44
20180279052
2018-09-27

System and method for applying a sound signal to a multi coil electrodynamic acoustic transducer

 #45
20180213329
2018-07-26

Sensory signal output apparatus

 #46
20180213310
2018-07-26

Receiver

 #47
20180206029
2018-07-19

Planar magnetic electro-acoustic transducer having multiple diaphragms

 #48
20180176691
2018-06-21

Armature and a transducer comprising the armature

 #49
20180152773
2018-05-31

Speaker module

 #50
20180124499
2018-05-03

Speaker device

 #51
20180084345
2018-03-22

Speaker

 #52
20180035213
2018-02-01

Electrical-acoustic transformation device

 #53
20170353802
2017-12-07

Miniature loudspeaker

 #54
20170318392
2017-11-02

Loudspeaker apparatus

 #55
20170289658
2017-10-05

Loudspeaker module

 #56
20170272864
2017-09-21

Corrosion resistant magnet assembly

 #57
20170265006
2017-09-14

Loudspeaker using Contour Field Hard Magnet Poles and Yoke Construction

 #58
20170230755
2017-08-10

Loudspeaker magnetic circuit and loudspeaker equipped with same

 #59
20170178771
2017-06-22

Magnetic sheet, method of making the same, and loud speaker including the same

 #60
20170134864
2017-05-11

Method of manufacturing a sound transducer

 #61
20170134863
2017-05-11

Speaker

 #62
20170134862
2017-05-11

Speaker

 #63
20170094415
2017-03-30

A CAP FOR AN ELECTRO-ACOUSTIC TRANSDUCER

 #64
20170013364
2017-01-12

Micromechanical sound transducer system and a corresponding manufacturing method

 #65
20160381481
2016-12-29

Speaker

 #66
20160381463
2016-12-29

Speaker

 #67
20160381462
2016-12-29

Speaker

 #68
20160366520
2016-12-15

Miniature Sound Generator

 #69
20160366509
2016-12-15

Electro-acoustic device

 #70
20160360305
2016-12-08

Speaker device

 #71
20160323674
2016-11-03

Audio speaker having a high-saturation magnetic insert

 #72
20160269829
2016-09-15

Speaker apparatus

 #73
20160261958
2016-09-08

Electromagnetic signal converter for an osteophone

 #74
20160227325
2016-08-04

Routing conductors to electro-acoustic transducer voice coils

 #75
20160225362
2016-08-04

Acoustic device

 #76
20160219371
2016-07-28

Loudspeaker

 #77
20160212546
2016-07-21

Halbach array audio transducer

 #78
20160173989
2016-06-16

Planardynamic transducer

 #79
20160165353
2016-06-09

Loudspeaker using contour field hard magnet poles and yoke construction

 #80
20160163445
2016-06-09

Compact electrical device and electrodynamic loudspeaker, electric motor, stirring device and adjustable clutch based thereon

 #81
20160127839
2016-05-05

Acoustic transducer

 #82
20160057541
2016-02-25

Moving coil motor arrangement with a sound outlet for reducing magnetic particle ingress in transducers

 #83
20160044397
2016-02-11

Audio transducer electrical connectivity

 #84
20160021460
2016-01-21

Sound transducer

 #85
20160014523
2016-01-14

Speaker assembly

 #86
20150373459
2015-12-24

Acoustic transducer

 #87
20150289039
2015-10-08

Loudspeaker

 #88
20150128790
2015-05-14

Actuator for vibrating a sound board in a musical instrument and method for attaching same

 #89
20150110339
2015-04-23

Planar magnetic electro-acoustic transducer having multiple diaphragms

 #90
20150110338
2015-04-23

Shock resistant coil and receiver

 #91
20150086026
2015-03-26

Intrinsically safe audio circuit for a portable two-way radio

 #92
20150036862
2015-02-05

SOUNDER MODULE AND METHOD FOR ASSEMBLING THE SAME

 #93
20150016659
2015-01-15

Miniature electroacoustic transducer and assembling method thereof

 #94
20150003663
2015-01-01

Moving coil miniature loudspeaker module

 #95
20140363035
2014-12-11

Multi-way coaxial loudspeaker with magnetic cylinder

 #96
20140363013
2014-12-11

Headphone driver, loudspeaker, and method of manufacturing headphone driver or loudspeaker

 #97
20140355780
2014-12-04

HEADPHONES AND HEADPHONE DRIVER

 #98
20140348374
2014-11-27

Magnetic circuit for loudspeaker, and loudspeaker using same

 #99
20140153749
2014-06-05

Magnetic yoke used for a moving-iron microphone/transducer

 #100
20140105427
2014-04-17

Speaker device

 #101
20130315434
2013-11-28

Multi-coil unit, voice coil, and electro-acoustic transducer using the same

 #102
20130064413
2013-03-14

Acoustic loudspeaker

 #103
20120257782
2012-10-11

ACOUSTIC TRANSDUCER

 #104
20120183170
2012-07-19

SPEAKER UNIT AND ELECTRONIC DEVICE HAVING THE SAME

 #105
20120140966
2012-06-07

Motor assembly

 #106
20120051557
2012-03-01

VOICE COIL FOR SPEAKER DEVICE, AND SPEAKER DEVICE

 #107
20120008817
2012-01-12

Earphone driver and method of manufacture

 #108
20110207588
2011-08-25

EXERCISE DEVICE OF AN OSCILLATION TYPE

 #109
20110123061
2011-05-26

Electroacoustic transducing device

 #110
20110044491
2011-02-24

LONG EXCURSION LOUDSPEAKER WITH CLOSED MAGNETIC CIRCUIT AND RIBBED ROBBIN EXTENDING THROUGH SLOTTED YOKE

 #111
20110007913
2011-01-13

MAGNET ASSEMBLY FOR A LOUDSPEAKER

 #112
20100278370
2010-11-04

Motor Structure of Loudspeaker

 #113
20100278361
2010-11-04

Configurations And Methods For Broadband Planar Magnetic Induction Transducers

 #114
20100254565
2010-10-07

Magnetic circuit

 #115
20100203918
2010-08-12

Speaker device

 #116
20100177927
2010-07-15

Loudspeaker and electronic apparatus using the same

 #117
20090310813
2009-12-17

Interchangeable magnet loudspeaker

 #118
20090232345
2009-09-17

Speaker and method of producing the same

 #119
20090190794
2009-07-30

Acoustic transducer

 #120
20090046888
2009-02-19

Speaker

 #121
20090016561
2009-01-15

Armature for a receiver

 #122
20080061635
2008-03-13

Method for manufacturing of a magnetic circuit

 #123
20080031487
2008-02-07

Electro-Acoustic Transducer And A Method For Assembly Thereof

 #124
20070147652
2007-06-28

Speaker device

 #125
20070104346
2007-05-10

Speaker

 #126
20070058834
2007-03-15

Magnetic circuit for speaker device and speaker device

 #127
20060251286
2006-11-09

Multi-gap air return motor for electromagnetic transducer

 #128
20060239499
2006-10-26

Semi-radially-charged conical magnet for electromagnetic transducer

 #129
20060239496
2006-10-26

Magnetically tapered air gap for electromagnetic transducer

 #130
20060233415
2006-10-19

Vibration-sound generating device and yoke thereof

 #131
20060093180
2006-05-04

Magnetic circuit having dual magnets, speaker and vibration generating apparatus using the same

 #132
20060034480
2006-02-16

Securing magnets in high-efficiency planar magnetic transducers

 #133
20050276433
2005-12-15

Magnetic assembly for a transducer

 #134
20050105758
2005-05-19

Audio speaker and method for assembling an audio speaker

 #135
20050084130
2005-04-21

Voice coil insertion jig, speaker producing method using the jig, and speaker produced by using the jig

 #136
20050005430
2005-01-13

Method for producing repulsion magnetic circuit and its production system

 #137
15175238
2018-04-03

Composite yoke for bone conduction transducer

 #138
13719000
2014-10-07

Dual ring magnet apparatus