ClassID:

232048

H04R23/002 - CPC Classification

Classification description:

Transducers other than those covered by groups  -  using electrothermic-effect transducer

Recent Application in this class:
#1
20260138896
2026-05-21

SYSTEMS, APPARATUS, AND METHODS FOR ALGAE CONTROL SYSTEM USING A CARBON NANOTUBE SONIC GENERATOR

#2
20240373169
2024-11-07

GRAPHENE TRANSDUCER

#3
20240305931
2024-09-12

PRESSURE WAVE GENERATING ELEMENT

#4
20240223969
2024-07-04

ROLL-TO-ROLL MICRO-SCALE THERMAL WIRE MICROPHONE

#5
20240167530
2024-05-23

Safety Apparatus

#6
20240048917
2024-02-08

PRESSURE WAVE GENERATING ELEMENT AND METHOD FOR PRODUCING THE SAME

#7
20230412968
2023-12-21

MEMS Device and Audio Device Including Such a MEMS Device

#8
20230370787
2023-11-16

PRESSURE WAVE GENERATING ELEMENT AND METHOD FOR PRODUCING THE SAME

#9
20230228261
2023-07-20

Method for activating a gas, electrothermal gas actuator, and use of a gas actuator

#10
20230067138
2023-03-02

SYSTEMS, APPARATUS, AND METHODS FOR ALGAE CONTROL SYSTEM USING A CARBON NANOTUBE SONIC GENERATOR

#11
20220345829
2022-10-27

THERMOACOUSTIC DEVICE AND METHOD OF MAKING THE SAME

#12
20220174425
2022-06-02

Pressure wave generating element and method for producing the same

#13
20220159387
2022-05-19

ELECTROSTATIC GRAPHENE SPEAKER

#14
20220141597
2022-05-05

Pressure wave-generating device and method for producing the same

#15
20210241751
2021-08-05

SPATIALLY GLOBAL NOISE CANCELLATION

#16
20200374635
2020-11-26

Electrostatic graphene speaker

#17
20200304924
2020-09-24

Thermal excitation acoustic-wave-generating device and acoustic-wave-generating system

#18
20200292683
2020-09-17

Thermal excitation acoustic-wave-generating device and acoustic-wave-generating system

#19
20200245075
2020-07-30

Electrostatic graphene speaker

#20
20200240357
2020-07-30

Thermoacoustic transducer apparatus including a working volume and reservoir volume in fluid communication through a conduit

#21
20200092660
2020-03-19

Thermoacoustic device and method of making the same

#22
20190349690
2019-11-14

System with thermoelectric conversion device

#23
20190058107
2019-02-21

Thermo-optical method of phrase transformational transduction

#24
20180179048
2018-06-28

MEMS transducer for interacting with a volume flow of a fluid and method for manufacturing the same

#25
20180063650
2018-03-01

Hearing device, particularly hearing aid

#26
20180048973
2018-02-15

Method and system for simultaneously verifying amplitude and temperature parameters of electrical-acoustic conversion device

#27
20170332179
2017-11-16

Thermal and thermoacoustic nanodevices and methods of making and using same

#28
20170303060
2017-10-19

Method for making thermoacoustic device

#29
20170303050
2017-10-19

Thermoacoustic device

#30
20170019738
2017-01-19

Vowel and consonant discriminating microphones using carbon nanotubes

#31
20160295339
2016-10-06

Method for making thermoacoustic device array

#32
20160277852
2016-09-22

Hearing device, particularly hearing aid

#33
20160277851
2016-09-22

SOUND CONDUCTOR FOR A HEARING DEVICE, MAIN UNIT OF A HEARING DEVICE AND HEARING DEVICE

#34
20160157022
2016-06-02

Electrostatic graphene speaker

#35
20160146039
2016-05-26

Acoustic attenuation with adaptive impedance

#36
20160037267
2016-02-04

Encapsulated thermoacoustic projector based on freestanding carbon nanotube film

#37
20160021467
2016-01-21

Thermoacoustic device and method for making the same

#38
20150381782
2015-12-31

Handphone

#39
20150319539
2015-11-05

Earphone

#40
20150301668
2015-10-22

Structure with integrated acoustics function

#41
20150281849
2015-10-01

Method of manufacturing thermoacoustic energy converting element part, thermoacoustic energy converting element part, and thermoacoustic energy converter

#42
20150222119
2015-08-06

System and method for reduction of signal distortion

#43
20140341403
2014-11-20

Optically clear diaphragm for an acoustic transducer and method for making same

#44
20140185841
2014-07-03

Thermoacoustic device

#45
20140140550
2014-05-22

Thermoacoustic device array

#46
20140140549
2014-05-22

Thermoacoustic chip

#47
20140140548
2014-05-22

Thermoacoustic chip

#48
20140140547
2014-05-22

Thermoacoustic device

#49
20140140546
2014-05-22

Earphone

#50
20140140545
2014-05-22

Thermoacoustic device

#51
20140140529
2014-05-22

Earphone

#52
20140140528
2014-05-22

Earphone

#53
20140137398
2014-05-22

Method for making thermoacoustic device array

#54
20140137397
2014-05-22

Method for making thermoacoustic device

#55
20130309400
2013-11-21

Method for making diaphragm

#56
20130301868
2013-11-14

Bobbin and loudspeaker using the same

#57
20130266159
2013-10-10

Loudspeaker

#58
20130265856
2013-10-10

THERMOACOUSTIC SENSOR

#59
20120298623
2012-11-29

Method for making thermoacoustic element

#60
20120250908
2012-10-04

Thermoacoustic device

#61
20120250907
2012-10-04

Thermoacoustic device

#62
20120250906
2012-10-04

Thermoacoustic device

#63
20120250905
2012-10-04

Thermoacoustic device

#64
20120250904
2012-10-04

Thermoacoustic device

#65
20120250903
2012-10-04

Thermoacoustic device

#66
20120250902
2012-10-04

Thermoacoustic device

#67
20120250901
2012-10-04

Thermoacoustic device

#68
20120250464
2012-10-04

Thermoacoustic device

#69
20120186903
2012-07-26

Optically clear diaphragm for an acoustic transducer and method for making same

#70
20120018244
2012-01-26

MEMS-type pressure pulse generator

#71
20110293118
2011-12-01

Thermal acoustic speaker

#72
20110255697
2011-10-20

DIGITAL SOUND PROJECTOR

#73
20110158446
2011-06-30

Thermoacoustic device with flexible fastener and loudspeaker using the same

#74
20110114413
2011-05-19

Thermoacoustic device

#75
20110110535
2011-05-12

Carbon nanotube speaker

#76
20110110196
2011-05-12

Thermoacoustic device

#77
20110103621
2011-05-05

THERMO-ACOUSTIC LOUDSPEAKER

#78
20110096952
2011-04-28

Diaphragm, method making the same and loudspeaker using the same

#79
20110094823
2011-04-28

Sound wave generator and method for producing the same, and method for generating sound waves using the sound wave generator

#80
20110075878
2011-03-31

Bobbin and loudspeaker using the same

#81
20110075519
2011-03-31

Thermoacoustic device

#82
20110051961
2011-03-03

Thermoacoustic device with heat dissipating structure

#83
20110033076
2011-02-10

Loudspeaker

#84
20110033069
2011-02-10

Thermoacoustic device

#85
20110031218
2011-02-10

Method for making thermoacoustic device

#86
20100311002
2010-12-09

Room heating device capable of simultaneously producing sound waves

#87
20100224437
2010-09-09

Optically clear diaphragm for an acoustic transducer and method for making same

#88
20100220876
2010-09-02

THERMO-ACOUSTIC TRANSDUCERS

#89
20100195858
2010-08-05

Hearing device

#90
20100195849
2010-08-05

Thermoacoustic device

#91
20100189296
2010-07-29

Thermoacoustic device

#92
20100188935
2010-07-29

Thermoacoustic device

#93
20100188934
2010-07-29

Speaker

#94
20100188933
2010-07-29

Thermoacoustic device

#95
20100172216
2010-07-08

Thermoacoustic device

#96
20100172215
2010-07-08

Thermoacoustic device

#97
20100172214
2010-07-08

Thermoacoustic device

#98
20100172213
2010-07-08

Thermoacoustic device

#99
20100166231
2010-07-01

Thermoacoustic device

#100
20100110839
2010-05-06

Thermoacoustic device

#101
20100098273
2010-04-22

Thermoacoustic device

#102
20100098272
2010-04-22

Thermoacoustic device

#103
20100086166
2010-04-08

Headphone

#104
20100086150
2010-04-08

Flexible thermoacoustic device

#105
20100085729
2010-04-08

Illuminating device

#106
20100054504
2010-03-04

Thermoacoustic device

#107
20100054503
2010-03-04

Ultrasonic thermoacoustic device

#108
20100054502
2010-03-04

Thermal sound generating device

#109
20100046784
2010-02-25

Loudspeaker

#110
20100046774
2010-02-25

Thermoacoustic device

#111
20090323476
2009-12-31

Thermoacoustic device

#112
20090323475
2009-12-31

Thermoacoustic device

#113
20090296528
2009-12-03

Thermoacoustic device

#114
20090279390
2009-11-12

Thermoacoustic device

#115
20090274009
2009-11-05

Thermoacoustic device

#116
20090274008
2009-11-05

Thermoacoustic device

#117
20090268563
2009-10-29

Acoustic system

#118
20090268562
2009-10-29

Thermoacoustic device

#119
20090268561
2009-10-29

Thermoacoustic device

#120
20090268560
2009-10-29

Thermoacoustic device

#121
20090268559
2009-10-29

Thermoacoustic device

#122
20090268558
2009-10-29

Thermoacoustic device

#123
20090268557
2009-10-29

Method of causing the thermoacoustic effect

#124
20090268556
2009-10-29

Thermoacoustic device

#125
20090145686
2009-06-11

Pressure wave generator and production method therefor

#126
20070217289
2007-09-20

Pressure wave generator and process for manufacturing the same

#127
20050201575
2005-09-15

Thermally excited sound wave generating device

#128
17322951
2023-02-14

Slotted thermophone

#129
16573197
2020-10-13

Method for making a thermoacoustic device

#130
16439745
2020-09-15

Thermoacoustic device with acoustically transparent housing

#131
16137668
2020-05-12

Liquid filled thermoacoustic device

#132
15676340
2020-03-03

Thermoacoustic transducer and methods for resonant generation and amplification of sound emission

#133
15273817
2017-12-05

Carbon nanotube underwater acoustic thermophone

#134
15273801
2017-12-05

Underwater acoustic carbon nanotube thermophone

#135
15270166
2017-10-03

Passive mode carbon nanotube underwater acoustic transducer