The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2012
Filed:
Apr. 30, 2009
Fuminori Tanaka, Osaka, JP;
Ryusuke Horibe, Osaka, JP;
Takeshi Inoda, Osaka, JP;
Rikuo Takano, Ibaraki, JP;
Kiyoshi Sugiyama, Tokyo, JP;
Toshimi Fukuoka, Kanagawa, JP;
Masatoshi Ono, Ibaraki, JP;
Fuminori Tanaka, Osaka, JP;
Ryusuke Horibe, Osaka, JP;
Takeshi Inoda, Osaka, JP;
Rikuo Takano, Ibaraki, JP;
Kiyoshi Sugiyama, Tokyo, JP;
Toshimi Fukuoka, Kanagawa, JP;
Masatoshi Ono, Ibaraki, JP;
Funai Electric Advanced Applied Technology Research Institute Inc., Osaka, JP;
Funai Electric Co., Ltd., Osaka, JP;
Abstract
A microphone unit includes a substrate. The substrate includes a first face formed with a first recess, a second face opposite to the first face, and a through hole communicating the second face to a bottom part of the first recess. A diaphragm unit includes a diaphragm, and at least a part of which is disposed in the first recess so that the diaphragm opposes the through hole.