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Variable-resistance transducers
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Industry
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H04R21/00
This industry / category may be too specific. Please go to a parent level for more data
Parent Industries
H
ELECTRICITY
H04
Electric communication
H04R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS DEAF-AID SETS PUBLIC ADDRESS SYSTEMS
Current Industry
H04R21/00
Variable-resistance transducers
Sub Industries
H04R21/02
Microphones
H04R21/021
with granular resistance material
H04R21/023
with more than one granular chamber
H04R21/025
disposition of the granular chamber in microphones
H04R21/026
in which the sound is perpendicular to the current crossing the transducer material
H04R21/028
with a fluid as resistance material
H04R21/04
Gramophone pick-ups using a stylus Recorders using a stylus
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Patents Grants
last 30 patents
Information
Patent Grant
Variable voltage phantom power supply assembly and a method for cus...
Patent number
11,800,282
Issue date
Oct 24, 2023
COPPERLINE RANCH
William N. Edwards
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Reactive silent speaker device for simulating harmonic nonlineariti...
Patent number
11,348,568
Issue date
May 31, 2022
AMP Devices, LLC
Robert Andrew Schoonraad
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Sensor having deformable film portion and magnetic portion and elec...
Patent number
10,788,545
Issue date
Sep 29, 2020
Kabushiki Kaisha Toshiba
Shotaro Baba
G01 - MEASURING TESTING
Information
Patent Grant
Acoustic system having a housing with adsorbent powder
Patent number
10,178,468
Issue date
Jan 8, 2019
Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
Karlheinz Bay
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Unidirectional condenser microphone unit
Patent number
10,178,471
Issue date
Jan 8, 2019
AUDIO-TECHNICA CORPORATION
Satoshi Yoshino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Speaker mount and assembly and method of disengagement thereof
Patent number
10,024,493
Issue date
Jul 17, 2018
Swarm Holdings LLC
Jonathan Neil Hart
E04 - BUILDING
Information
Patent Grant
Microphone system with non-orthogonally mounted microphone die
Patent number
9,769,562
Issue date
Sep 19, 2017
Invensense, Inc.
Aleksey S. Khenkin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Hydraulic microphone
Patent number
9,591,413
Issue date
Mar 7, 2017
Cochlear Limited
Scott Allen Miller
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Microphone
Patent number
9,438,978
Issue date
Sep 6, 2016
MASCOT ELECTRIC CO., LTD.
Kun Tien Chiang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Microphone system with non-orthogonally mounted microphone die
Patent number
9,226,052
Issue date
Dec 29, 2015
Invensense, Inc.
Aleksey S. Khenkin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Differential pressure sensor
Patent number
9,188,497
Issue date
Nov 17, 2015
The University of Tokyo
Isao Shimoyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Sensor module
Patent number
9,143,849
Issue date
Sep 22, 2015
Robert Bosch GmbH
Jochen Zoellin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
MEMS device assembly and method of packaging same
Patent number
9,131,325
Issue date
Sep 8, 2015
FREESCALE SEMICONDUCTOR, INC.
Mark E. Schlarmann
B81 - MICRO-STRUCTURAL TECHNOLOGY
Information
Patent Grant
Acoustic energy transducer
Patent number
8,737,663
Issue date
May 27, 2014
Hewlett-Packard Development Company, L.P.
Adel Jilani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Acoustic pressure transducer
Patent number
8,705,774
Issue date
Apr 22, 2014
Hewlett-Packard Development Company, L.P.
Adel Jilani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Differential microphone
Patent number
8,457,342
Issue date
Jun 4, 2013
Funai Electric Co., Ltd.
Fuminori Tanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multi-cantilever MEMS sensor, manufacturing method thereof, sound s...
Patent number
7,944,130
Issue date
May 17, 2011
Korea Advanced Institute of Science and Technology
Youngjin Park
B81 - MICRO-STRUCTURAL TECHNOLOGY
Information
Patent Grant
Miniature acoustic detector based on electron surface tunneling
Patent number
7,280,436
Issue date
Oct 9, 2007
Corporation for National Research Initiatives
Michael Pedersen
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Fluid coupled subwoofer acoustic enclosure system
Patent number
6,014,448
Issue date
Jan 11, 2000
Sound Related Technologies
Noyal J. Alton
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Environmentally sealed acoustic transducer coupling
Patent number
5,729,508
Issue date
Mar 17, 1998
Rosemount Aerospace Inc.
Anthony D. Baker
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Magnetoresistive microphone and acoustic sensing devices
Patent number
5,450,372
Issue date
Sep 12, 1995
AT&T Corp.
Sungho Jin
G01 - MEASURING TESTING
Information
Patent Grant
Carbon transducer with electrical contact
Patent number
4,387,276
Issue date
Jun 7, 1983
Bell Telephone Laboratories, Incorporated
John T. Plewes
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal transducing apparatus
Patent number
4,220,943
Issue date
Sep 2, 1980
TRW Inc.
Laurence N. Wesson
G01 - MEASURING TESTING
Information
Patent Grant
Carbon granule microphone with molded resin-conductive carbon elect...
Patent number
4,205,206
Issue date
May 27, 1980
Iwatsu Electric Co. Ltd.
Tetsusuke Eishima
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mechanically biased semiconductor strain sensitive microphone
Patent number
4,182,937
Issue date
Jan 8, 1980
International Standard Electric Corp.
John C. Greenwood
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Microphone
Patent number
4,142,074
Issue date
Feb 27, 1979
The United States of America as represented by the Attorney General of the Un...
Charles K. Corbett
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Intercom embodying tap transducers
Patent number
4,057,688
Issue date
Nov 8, 1977
Gerard J. O'Brien
G01 - MEASURING TESTING
Information
Patent Grant
Electro-mechanical amplifier sound transducer
Patent number
3,970,804
Issue date
Jul 20, 1976
Jerry O'Brien
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Toy carbon microphone
Patent number
3,968,332
Issue date
Jul 6, 1976
Lawrence Peska Associates, Inc.
Dinsdale Thorpe
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transmission of voice or sound through telegraphy
Patent number
3,932,711
Issue date
Jan 13, 1976
Gerard J. O'Brien
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
VIBRATION SENSOR
Publication number
20230362525
Publication date
Nov 9, 2023
SHENZHEN SHOKZ CO., LTD.
Yongshuai YUAN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Reactive Silent Speaker Device for Simulating Harmonic Nonlineariti...
Publication number
20220068254
Publication date
Mar 3, 2022
AMP Devices, LLC
Robert Andrew Schoonraad
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MICROPHONE AND MANUFACTURING METHOD THEREOF
Publication number
20180132023
Publication date
May 10, 2018
Hyundai Motor Company
ILSEON YOO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
UNIDIRECTIONAL CONDENSER MICROPHONE UNIT
Publication number
20180054673
Publication date
Feb 22, 2018
Audio-Technica Corporation
Satoshi YOSHINO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CONDENSER MICROPHONE
Publication number
20160337753
Publication date
Nov 17, 2016
KABUSHIKI KAISHA AUDIO-TECHNICA
Hiroshi Akino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
HYDRAULIC MICROPHONE
Publication number
20150126805
Publication date
May 7, 2015
COCHLEAR LIMITED
Scott Allen MILLER
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Microphone System with Non-Orthogonally Mounted Microphone Die
Publication number
20140205127
Publication date
Jul 24, 2014
InvenSense, Inc.
Aleksey S. Khenkin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DIFFERENTIAL PRESSURE SENSOR
Publication number
20140000378
Publication date
Jan 2, 2014
THE UNIVERSITY OF TOKYO
Isao Shimoyama
G01 - MEASURING TESTING
Information
Patent Application
SENSOR MODULE
Publication number
20130322675
Publication date
Dec 5, 2013
ROBERT BOSCH GmbH
Jochen ZOELLIN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MEMS DEVICE ASSEMBLY AND METHOD OF PACKAGING SAME
Publication number
20120175747
Publication date
Jul 12, 2012
FREESCALE SEMICONDUCTOR, INC.
Mark E. Schlarmann
B81 - MICRO-STRUCTURAL TECHNOLOGY
Information
Patent Application
ACOUSTIC PRESSURE TRANSDUCER
Publication number
20120027236
Publication date
Feb 2, 2012
Adel Jilani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ACOUSTIC ENERGY TRANSDUCER
Publication number
20110249853
Publication date
Oct 13, 2011
Adel Jilani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Differential Microphone
Publication number
20110176698
Publication date
Jul 21, 2011
Fuminori Tanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Microphone
Publication number
20090136073
Publication date
May 28, 2009
Ching-Wen Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MULTI-CANTILEVER MEMS SENSOR, MANUFACTURING METHOD THEREOF, SOUND S...
Publication number
20090079298
Publication date
Mar 26, 2009
Korea Advanced Institute of Science and Technology
Youngjin Park
B81 - MICRO-STRUCTURAL TECHNOLOGY
Information
Patent Application
Miniature acoustic detector based on electron surface tunneling
Publication number
20050249041
Publication date
Nov 10, 2005
Corporation for National Research Initiatives
Michael Pedersen
H04 - ELECTRIC COMMUNICATION TECHNIQUE