Patents-Review.com
ClassID:

232017 ⎘

H04R13/00 - CPC Classification

Classification description:

Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet

Sub-classes:
Recent Application in this class:
#1
20240190697
2024-06-13

Electromagnetic microspeaker, its coil module, speaker/coil module array and preparation method thereof

 #2
20240190696
2024-06-13

Coil module for electromagnetic microspeaker, coil module array and preparation method thereof

 #3
20230388715
2023-11-30

ACOUSTIC TRANSDUCER WITH TRANSVERSALLY ORIENTED MAGNETS

 #4
20230353944
2023-11-02

Waterproof microspeaker

 #5
20230192477
2023-06-22

MEMS environmental sensor and preparation method therefor

 #6
20230117408
2023-04-20

Loudspeaker

 #7
20220340409
2022-10-27

Electromagnetic microspeaker, its coil module, speaker/coil module array and preparation method thereof

 #8
20220014829
2022-01-13

Sealed acoustic speaker and medical device including same

 #9
20210281946
2021-09-09

Hybrid speaker and converter

 #10
20200389736
2020-12-10

BRIDGE-EDGE-TYPE HIGH-RESOLUTION ELECTROMAGNETIC SPEAKER

 #11
20200389735
2020-12-10

BRIDGE-EDGE-TYPE HIGH-RESOLUTION ELECTROMAGNETIC SPEAKER

 #12
20200267473
2020-08-20

Hybrid speaker and converter

 #13
20200204890
2020-06-25

Sealed acoustic speaker and medical device including same

 #14
20200169815
2020-05-28

Apparatus with surface to be displaced

 #15
20200088184
2020-03-19

ELECTROMAGNET MEMBRANE PUMP/TRANSDUCER SYSTEM AND METHODS TO MAKE AND USE SAME

 #16
20200037078
2020-01-30

Loudspeaker unit with multiple drive units

 #17
20190289399
2019-09-19

Apparatus for generating vibration

 #18
20190268700
2019-08-29

Electroacoustic driver and related loudspeaker/sounder

 #19
20190182598
2019-06-13

Electric motor

 #20
20190149911
2019-05-16

Compression driver with side-firing compression chamber

 #21
20190028809
2019-01-24

Apparatus for generating vibration

 #22
20180234758
2018-08-16

Phase plug for compression driver having improved assembly

 #23
20180020292
2018-01-18

Planar magnetic loudspeaker airflow system

 #24
20170318392
2017-11-02

Loudspeaker apparatus

 #25
20170230741
2017-08-10

Earphone

 #26
20160192087
2016-06-30

Hybrid receiver module

 #27
20160150312
2016-05-26

Bone-conduction anvil and diaphragm

 #28
20160127839
2016-05-05

Acoustic transducer

 #29
20150016640
2015-01-15

Acoustic generator, acoustic generating device, and electronic device

 #30
20130188822
2013-07-25

Magnet-less loudspeaker

 #31
20130106205
2013-05-02

Vibration transducer and actuator

 #32
20120294474
2012-11-22

Moving-magnet electromagnetic device with planar coil

 #33
20120257782
2012-10-11

ACOUSTIC TRANSDUCER

 #34
20110194723
2011-08-11

Magnetic Diaphragm and Manufacturing Method thereof

 #35
20110169349
2011-07-14

Electromagnetic vibrator and producing method thereof

 #36
20100124352
2010-05-20

MICRO MAGNETIC DEVICE WITH MAGNETIC SPRING

 #37
20090190794
2009-07-30

Acoustic transducer

 #38
20080292118
2008-11-27

Bone-Conduction Device and Method of Manufacturing the Same

 #39
20080049967
2008-02-28

Acoustic transducer

 #40
20080025550
2008-01-31

Magnetic membrane suspension

 #41
20070053542
2007-03-08

Bone conduction speaker

 #42
20050254672
2005-11-17

Bone conductive speaker

 #43
14822579
2017-06-27

Acoustic hailing device

 #44
13629962
2016-10-04

Structure and manufacture of bone-conduction transducer

 #45
13629944
2016-03-15

Bone-conduction anvil and diaphragm