US Patent 7623671 Narrow directional microphone
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Patent Inventor Names
Hiroshi Akino0
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Patent abstract
A narrow directional microphone includes an acoustic tube made of a resin film having thousands of minute holes, and a microphone unit attached in a rear end of the acoustic tube. The acoustic tube is made of a resin film having thousands of minute holes and curled up. The minute holes let air in but block droplets.
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US Patent 07623671 Narrow directional microphone US Patent 7623671 Narrow directional microphone
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Patent Number
076236710
Patent Number
76236710
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Patent Jurisdiction
Patent Number
076236710
Date of Patent
November 24, 2009
0Patent Application Number
112261980
Date Filed
September 15, 2005
0Official Website
Patent Primary Examiner
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US Patent 07623671 Narrow directional microphone
Infobox
Is a
Patent jurisdiction
Patent number
07623671
Date of patent
November 24, 2009
Patent application number
11226198
Date Filed
September 15, 2005
Patent primary examiner
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