ClassID:

231949

H04R1/44 - page 2 - CPC Classification

Classification description:

Details of transducers, loudspeakers or microphones Special adaptations for subaqueous use, e.g. for hydrophone

Recent Application in this class:
#301
20140369542
2014-12-18

Floating and waterproof sound box

#302
20140348367
2014-11-27

Activity monitoring and directing system

#303
20140341413
2014-11-20

Waterproof audio and storage system

#304
20140254849
2014-09-11

Waterproof sound transmitting member

#305
20140198622
2014-07-17

Hydrodynamic modulator

#306
20140161293
2014-06-12

Electronic device

#307
20140119587
2014-05-01

Waterproof piezoelectric ceramic speaker

#308
20140079268
2014-03-20

Water-proof sound transmitting member

#309
20140066851
2014-03-06

Medical device with membrane keypad sealing element, and related manufacturing method

#310
20140017543
2014-01-16

Battery shock absorber for a portable medical device

#311
20130315037
2013-11-28

Low frequency electro acoustic transducer and method of generating acoustic waves

#312
20130288596
2013-10-31

Underwater communication device

#313
20130259286
2013-10-03

Negative pressure earphone

#314
20130229894
2013-09-05

Underwater sensor arrays linearized by weight and buoyance distribution

#315
20130216083
2013-08-22

Directional audio waveguide array

#316
20130208938
2013-08-15

SYSTEMS OF APPAREL WITH INBUILT DEVICES FOR COMMUNICATION, ENTERTAINMENT, LEARNING AND HEALTH MONITORING

#317
20130156985
2013-06-20

Water-proof sound-transmitting member and method for producing same, and supported water-proof sound-transmitting member

#318
20130044902
2013-02-21

Transducers employing bowed lamina

#319
20120269375
2012-10-25

EARPHONE

#320
20120255092
2012-10-11

WATERPROOF ENCLOSURE FOR AUDIO DEVICE

#321
20120180788
2012-07-19

Apparatus, system and method for underwater voice communication by a diver

#322
20120170422
2012-07-05

Hydrophone and pressure balancing device for using for hydrophone

#323
20120095399
2012-04-19

Medical device and related assembly having an offset element for a piezoelectric speaker

#324
20120092264
2012-04-19

Medical device with membrane keypad sealing element, and related manufacturing method

#325
20110274301
2011-11-10

Underwater Transducer Apparatus Using Polarized Stacked Piezoelectric Elements and a Method of Operating the Same

#326
20110261986
2011-10-27

Electro-acoustic converters, electronic devices, waterproof covers, and air leakage test methods for electro-acoustic converters

#327
20110255375
2011-10-20

Acoustic wave transducer and sonar antenna with improved directivity

#328
20110242943
2011-10-06

Hydrophone and hydrophone assembly for performing stereophonic underwater sound recordings

#329
20110002484
2011-01-06

Acoustic transducer

#330
20100260013
2010-10-14

Mechanically filtered hydrophone

#331
20100119090
2010-05-13

Omni-directional radiator for multi-transducer array

#332
20100006314
2010-01-14

Waterproof enclosure for audio device

#333
20090268554
2009-10-29

Underwater sound projector system and method of producing same

#334
20090135673
2009-05-28

Methods, systems and apparatus for measuring acoustic pressure

#335
20090003643
2009-01-01

Aquatic loudspeaker having a diaphragm

#336
20080298177
2008-12-04

Submersible loudspeaker assembly

#337
20080240472
2008-10-02

Bending vibration type sound transmitter

#338
20080181429
2008-07-31

Durable and/or waterproof music earwear for helmets/headgear

#339
20080056515
2008-03-06

Electro-acoustic transducer

#340
20080013780
2008-01-17

Speaker device

#341
20070280053
2007-12-06

WATERPROOF AUDIO HEADSET

#342
20070261910
2007-11-15

Capacitive vibration sensor and method for manufacturing same

#343
20070159925
2007-07-12

Lorentz acoustic transmitter for underwater communications

#344
20070086273
2007-04-19

Protective housing for an audio device

#345
20070047747
2007-03-01

Wireless communication device

#346
20060198247
2006-09-07

Shear mode folded shell projector

#347
20060164919
2006-07-27

Acoustic transducer and underwater sounding apparatus

#348
20060018488
2006-01-26

Bone conduction systems and methods

#349
20060002235
2006-01-05

Pressure sensitive sensor for real-time reconfigurable sonar applications

#350
20060001334
2006-01-05

Echo sounder transducer

#351
20050254778
2005-11-17

System for providing wireless waterproof audio

#352
20050201663
2005-09-15

Hydrophone mandrel for precise placement of gratings

#353
20050195687
2005-09-08

Pressure compensated hydrophone

#354
20050179813
2005-08-18

Camera and electronic apparatus

#355
20050157591
2005-07-21

Underwater Sonic Child Locator

#356
20050139013
2005-06-30

Ultrasonic sensor

#357
20050123161
2005-06-09

System for housing an audio system in an aquatic environment

#358
20050100186
2005-05-12

Head worn entertainment and/or communication device

#359
20050051022
2005-03-10

Detection of sound waves produced by a musical instrument

#360
18418189
2026-04-14

Underwater communication using sensing fusion

#361
18370964
2024-09-10

Underwater acoustic projector transducers

#362
18334945
2024-04-16

Coaxial sensor array system for subsurface anomalies detection

#363
18202339
2025-09-02

Rollable, large vertical aperture, acoustic planar towed array

#364
18085471
2025-06-24

Underwater sound system for watercraft

#365
17808406
2023-10-17

Computerised systems and methods for detection

#366
17570031
2022-10-18

Acoustic-electric remote control release hook used on water and underwater

#367
17530115
2023-02-28

Magnetic field audio loop for swimming pools

#368
17322951
2023-02-14

Slotted thermophone

#369
17152006
2022-02-01

Device with water drainage for a speaker

#370
16459875
2020-09-08

Underwater subwoofer system

#371
16240341
2019-11-12

Waterproof headphone structure

#372
16021094
2019-11-26

Waterproof molded mesh for audio transducer

#373
15836955
2018-12-25

Concealed barometric vent for an electronic device

#374
15270192
2018-12-11

Process for assembly of multimode hydrophone ceramic stack

#375
15270166
2017-10-03

Passive mode carbon nanotube underwater acoustic transducer

#376
14867220
2017-06-27

Vehicle based vector sensor

#377
13889672
2016-04-12

Waterproof speaker system with bladder

#378
13248337
2015-12-15

Transducer with modifiable passive component