Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hiroshi Akino0
Date of Patent
November 24, 2009
0Patent Application Number
112261980
Date Filed
September 15, 2005
0Patent Citations Received
Patent Primary Examiner
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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