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by using a single aperture of dimensions not greater than the shortest operating wavelength
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H04R1/36
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Parent Industries
H
ELECTRICITY
H04
Electric communication
H04R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS DEAF-AID SETS PUBLIC ADDRESS SYSTEMS
H04R1/00
Details of transducers, loudspeakers or microphones
Current Industry
H04R1/36
by using a single aperture of dimensions not greater than the shortest operating wavelength
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Patents Grants
last 30 patents
Information
Patent Grant
Playback devices having waveguides
Patent number
12,035,101
Issue date
Jul 9, 2024
Sonos, Inc.
Michael Chamness
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Playback devices having waveguides
Patent number
11,483,643
Issue date
Oct 25, 2022
Sonos, Inc.
Michael Chamness
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Acoustic transducers for microphone assemblies having non-circular...
Patent number
11,483,645
Issue date
Oct 25, 2022
Knowles Electronics, LLC
Jeremy Johnson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Active noise control with planar transducers
Patent number
10,757,503
Issue date
Aug 25, 2020
Audeze, LLC
Dragoslav Colich
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Playback devices having waveguides
Patent number
10,667,041
Issue date
May 26, 2020
Sonos, Inc.
Michael Chamness
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Non-axisymmetric and non-horn phase plugs
Patent number
10,448,149
Issue date
Oct 15, 2019
Audeze, LLC
Dragoslav Colich
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Dome shaped microphone array with circularly distributed microphones
Patent number
9,961,437
Issue date
May 1, 2018
Signal Essence, LLC
Hugh Joseph McLaughlin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Display apparatus for visual and audio multiplexed display
Patent number
9,667,949
Issue date
May 30, 2017
Samsung Electronics Co., Ltd.
Seung-hoon Han
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Acoustic horn gain managing
Patent number
9,049,519
Issue date
Jun 2, 2015
Bose Corporation
David Edwards Blore
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Phase plug and acoustic lens for direct radiating loudspeaker
Patent number
8,672,088
Issue date
Mar 18, 2014
Harman International Industries, Inc.
Brian Sterling
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Phase plug and acoustic lens for direct radiating loudspeaker
Patent number
8,418,802
Issue date
Apr 16, 2013
Harman International Industries, Incorporated
Brian Sterling
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Acoustic radiation pattern adjusting
Patent number
8,290,195
Issue date
Oct 16, 2012
Bose Corporation
Geoffrey C. Chick
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Phase plug and acoustic lens for direct radiating loudspeaker
Patent number
8,181,736
Issue date
May 22, 2012
Harman International Industries, Incorporated
Brian Sterling
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Magnetic membrane suspension
Patent number
7,940,953
Issue date
May 10, 2011
Harman Becker Automotive Systems GmbH
Hans-Juergen Regl
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Piezoelectric transducer
Patent number
4,597,099
Issue date
Jun 24, 1986
Tadashi Sawafuji
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transducer structure
Patent number
4,155,066
Issue date
May 15, 1979
American District Telegraph Company
Aaron A. Galvin
G08 - SIGNALLING
Information
Patent Grant
3135349
Patent number
3,135,349
Issue date
Jun 2, 1964
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
2646851
Patent number
2,646,851
Issue date
Jul 28, 1953
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
2034014
Patent number
2,034,014
Issue date
Mar 17, 1936
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Playback Devices Having Waveguides
Publication number
20240171903
Publication date
May 23, 2024
Sonos, Inc.
Michael Chamness
B60 - VEHICLES IN GENERAL
Information
Patent Application
Playback Devices Having Waveguides
Publication number
20230319461
Publication date
Oct 5, 2023
Sonos, Inc.
Michael Chamness
B60 - VEHICLES IN GENERAL
Information
Patent Application
ACOUSTIC TRANSDUCERS FOR MICROPHONE ASSEMBLIES HAVING NON-CIRCULAR...
Publication number
20200389723
Publication date
Dec 10, 2020
KNOWLES ELECTRONICS, LLC
Jeremy Johnson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Playback Devices Having Waveguides
Publication number
20200059720
Publication date
Feb 20, 2020
Sonos, Inc.
Michael Chamness
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ACTIVE NOISE CONTROL WITH PLANAR TRANSDUCERS
Publication number
20180255394
Publication date
Sep 6, 2018
Dragoslav Colich
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
NON-AXISYMMETRIC AND NON-HORN PHASE PLUGS
Publication number
20180124509
Publication date
May 3, 2018
Audeze, LLC
Dragoslav Colich
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
NON-AXISYMMETRIC AND NON-HORN PHASE PLUGS
Publication number
20180063635
Publication date
Mar 1, 2018
Audeze, LLC
Dragoslav Colich
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DOME SHAPED MICROPHONE ARRAY WITH CIRCULARLY DISTRIBUTED MICROPHONES
Publication number
20170105066
Publication date
Apr 13, 2017
Signal Essence, LLC
Hugh Joseph McLaughlin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
LOW DIFFRACTION TWEETER HOUSING
Publication number
20160337749
Publication date
Nov 17, 2016
Paradigm Electronics, Inc.
Oleg Bogdanov
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
VARIABLE DEVICE FOR DIRECTING SOUND WAVEFRONTS
Publication number
20160157010
Publication date
Jun 2, 2016
ADVANCED ACOUSTIC SF GMBH
Helmut Oellers
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DISPLAY APPARATUS FOR VISUAL AND AUDIO MULTIPLEXED DISPLAY
Publication number
20140267638
Publication date
Sep 18, 2014
Samsung Electronics Co., Ltd.
Seung-hoon HAN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PHASE PLUG AND ACOUSTIC LENS FOR DIRECT RADIATING LOUDSPEAKER
Publication number
20130228393
Publication date
Sep 5, 2013
HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
Brian Sterling
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PHASE PLUG AND ACOUSTIC LENS FOR DIRECT RADIATING LOUDSPEAKER
Publication number
20120279797
Publication date
Nov 8, 2012
HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
Brian Sterling
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Acoustic Horn Gain Managing
Publication number
20120213387
Publication date
Aug 23, 2012
David Edwards Blore
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SLOTTED WAVEGUIDE FOR LOUDSPEAKERS
Publication number
20120121118
Publication date
May 17, 2012
HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
Anthony Fregoso
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ACOUSTIC RADIATION PATTERN ADJUSTING
Publication number
20110243362
Publication date
Oct 6, 2011
Geoffrey C. Chick
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Flat Panel Loudspeakers
Publication number
20110188661
Publication date
Aug 4, 2011
Lutz Ehrig
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PHASE PLUG AND ACOUSTIC LENS FOR DIRECT RADIATING LOUDSPEAKER
Publication number
20110168480
Publication date
Jul 14, 2011
HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
Brian Sterling
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MAGNETIC MEMBRANE SUSPENSION
Publication number
20080025550
Publication date
Jan 31, 2008
Hans-Juergen Regl
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Omnidirectional backload horn-type speaker
Publication number
20040020711
Publication date
Feb 5, 2004
Hiroshi China
H04 - ELECTRIC COMMUNICATION TECHNIQUE