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Noise cancellation headphone
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Patent number 11,100,912
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Issue date Aug 24, 2021
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AMS International AG
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Peter McCutcheon
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Adaptive personal active noise system
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Patent number 6,078,672
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Issue date Jun 20, 2000
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Virginia Tech Intellectual Properties, Inc.
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William Richard Saunders
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Low cost controller
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Patent number 5,627,746
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Issue date May 6, 1997
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Noise Cancellation Technologies, Inc.
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Eldon W. Ziegler
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Ear defenders employing active noise control
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Patent number 5,600,729
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Issue date Feb 4, 1997
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The Secretary of State for Defence in her Britannic Majesty's Government of t...
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Paul Darlington
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Active noise control
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Patent number 4,965,832
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Issue date Oct 23, 1990
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The General Electric Company, p.l.c.
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John W. Edwards
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Electronic noise attenuation system
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Patent number 4,783,817
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Issue date Nov 8, 1988
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Hitachi Plant Engineering and Construction Co., Ltd.
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Hareo Hamada
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Attenuation of sound waves
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Patent number 4,589,133
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Issue date May 13, 1986
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National Research Development Corp.
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Malcolm A. Swinbanks
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Feedback control
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Patent number 4,494,074
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Issue date Jan 15, 1985
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Bose Corporation
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Amar G. Bose
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Active control of sound waves
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Patent number 4,044,203
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Issue date Aug 23, 1977
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National Research Development Corporation
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Malcolm Alexander Swinbanks
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G10 - MUSICAL INSTRUMENTS ACOUSTICS