Patents-Review.com
ClassID:

232183 ⎘

H04R2400/00 - CPC Classification

Classification description:

Loudspeakers

Sub-classes:
Recent Application in this class:
#1
20240388823
2024-11-21

AUDIO ASSEMBLIES FOR ELECTRONIC DEVICES

 #2
20220286763
2022-09-08

Audio assemblies for electronic devices

 #3
20220159220
2022-05-19

Audio/video recording and communication devices

 #4
20200069173
2020-03-05

Digital visual acuity eye examination for remote physician assessment

 #5
20200045269
2020-02-06

Audio/video recording and communication devices

 #6
20190394591
2019-12-26

Method for removing dust in sound outlet hole of loudspeaker, and terminal device

 #7
20190318718
2019-10-17

Person support apparatuses with noise cancellation

 #8
20190234608
2019-08-01

Lighting apparatus

 #9
20190168934
2019-06-06

Container and/or container lid with recordable audio player

 #10
20190045603
2019-02-07

Multifunction light controller

 #11
20190028208
2019-01-24

System and a method for establishing data communication between devices using audio frequency

 #12
20180340811
2018-11-29

Electro acoustic volume measurement

 #13
20180334096
2018-11-22

Vehicle approach notification device

 #14
20180255412
2018-09-06

Method and apparatus for removing dust in sound outlet hole of loudspeaker and terminal device

 #15
20180249256
2018-08-30

MEMS loudspeaker having an actuator structure and a diaphragm spaced apart therefrom

 #16
20180249134
2018-08-30

Audio/video recording and communication devices with removable battery

 #17
20180184223
2018-06-28

Amplifier module and control method thereof

 #18
20180122358
2018-05-03

Person support apparatuses with noise cancellation

 #19
20180087766
2018-03-29

Lighting apparatus

 #20
20180084362
2018-03-22

Augmented performance synchronization

 #21
20180074689
2018-03-15

Parameter control device, non-transitory storage medium storing a parameter control program, and parameter control method, that update a parameter of a controlled device according to a parameter adjusted by both a cooperative operated portion and a specific operation portion each associated with the controlled device

 #22
20170373657
2017-12-28

Method for adapting the volume gain for the power limitation of an amplifier and amplifier

 #23
20170227502
2017-08-10

Ultrasonic transducer, ultrasonic probe, ultrasonic apparatus, ultrasonic transducer manufacturing method, and vibration device

 #24
20170176330
2017-06-22

Gas detector for mobile device including enclosure having interior chamber with audio loudspeaker, sealed loudspeaker opening, ventilation port, and gas sensor

 #25
20170094436
2017-03-30

Capacitive microphone with integrated cavity

 #26
20170055740
2017-03-02

Sound-emitting cup

 #27
20160212528
2016-07-21

5 GHz wireless stereo sound system

 #28
20160014527
2016-01-14

Electroacoustic converter film

 #29
20150170557
2015-06-18

Motorized gift package accessory

 #30
20150016634
2015-01-15

Circuits for improved audio signal reconstruction

 #31
20140367191
2014-12-18

Acoustic generator, acoustic generation device, and electronic device

 #32
20140355819
2014-12-04

Device and method for allocating data based on an arrangement of elements in an image

 #33
20140348346
2014-11-27

Bone transmission earphone

 #34
20140341411
2014-11-20

Dual purpose pill reminder and tamper detector

 #35
20140294205
2014-10-02

Output-stage circuit and method for over current protection thereof and audio amplify system

 #36
20140270326
2014-09-18

Planar-magnetic transducer with improved electro-magnetic circuit

 #37
20140270306
2014-09-18

Proximity sensing device control architecture and data communication protocol

 #38
20140254191
2014-09-11

Electrodynamic exciter and vehicle lamp employing the same

 #39
20140226846
2014-08-14

Capacitive microphone with integrated cavity

 #40
20140160040
2014-06-12

Display device unit

 #41
20140086436
2014-03-27

Piezoelectric sounder

 #42
20130346642
2013-12-26

Media content control module and presentation device

 #43
20130301853
2013-11-14

Induced signal removing circuit

 #44
20130121500
2013-05-16

Driving of parametric loudspeakers

 #45
20120321122
2012-12-20

SPEAKER

 #46
20120230535
2012-09-13

ELECTRONIC DEVICE

 #47
20120207330
2012-08-16

Audio signal amplifying circuit

 #48
20120162877
2012-06-28

Projector

 #49
20120155676
2012-06-21

Impedance matching speaker wire system

 #50
20120152648
2012-06-21

Speaker and portable information terminal

 #51
20120018244
2012-01-26

MEMS-type pressure pulse generator

 #52
20110243371
2011-10-06

Micro-speaker and method for manufacturing same

 #53
20110211121
2011-09-01

Display apparatus and control method thereof

 #54
20110188675
2011-08-04

Electronic apparatus

 #55
20110110527
2011-05-12

Active muffler

 #56
20110101912
2011-05-05

Battery chargers that are used for power tools and are configured to be connectible with cellular phones

 #57
20110075867
2011-03-31

Piezoelectric micro speaker including weight attached to vibrating membrane and method of manufacturing the same

 #58
20110019863
2011-01-27

Microphone-Shaped Speaker

 #59
20100119088
2010-05-13

Capacitive microphone with integrated cavity

 #60
20080273720
2008-11-06

Optimized piezo design for a mechanical-to-acoustical transducer

 #61
20080130331
2008-06-05

Amplifier symmetric supply regulation

 #62
20080075317
2008-03-27

Silent heat dissipation device

 #63
20070269073
2007-11-22

Earphone with microphone

 #64
20070237352
2007-10-11

Miniature loudspeaker and magnetic circuit having integrated air flow passage

 #65
20070189577
2007-08-16

Ferrofluid centered voice coil speaker

 #66
20070189553
2007-08-16

Cylindrically shaped stage monitor

 #67
20070154059
2007-07-05

Damper structure of preventing irregular vibration for speaker

 #68
20070154058
2007-07-05

Corrugated damper for speaker

 #69
20070139121
2007-06-21

Amplifier symmetric supply regulation

 #70
20070104344
2007-05-10

Hearing aid mechanism

 #71
20070098199
2007-05-03

Speaker system for head protective gear

 #72
20070047961
2007-03-01

Infrared communication receiver

 #73
20070046642
2007-03-01

Touch panel having a speaker function

 #74
20060269087
2006-11-30

Diaphragm membrane and supporting structure responsive to environmental conditions

 #75
20050244031
2005-11-03

Suspension for the voice coil of a loudspeaker drive unit

 #76
20050237685
2005-10-27

Thin film circuit substrate, piezoelectric speaker device, display device, and sound-generating display device

 #77
16916900
2022-07-26

Audio assemblies for electronic devices

 #78
16193258
2020-07-07

Audio assemblies for electronic devices