Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David M. Schwartz0
Date of Patent
August 25, 2009
0Patent Application Number
111400510
Date Filed
May 31, 2005
0Patent Citations Received
Patent Primary Examiner
Patent abstract
Gas containing particles or droplets flowing continuously through a microphone is perturbed by sound waves. Sound-induced localized pressure changes in the gas are measured by detecting variations in gas opacity with an optical transducer disposed transverse to the flow direction.
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