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:
Jun. 04, 2013
Filed:
Jul. 16, 2009
Fuminori Tanaka, Daito, JP;
Ryusuke Horibe, Daito, JP;
Takeshi Inoda, Daito, JP;
Rikuo Takano, Daito, JP;
Kiyoshi Sugiyama, Mitaka, JP;
Toshimi Fukuoka, Yokohama, JP;
Masatoshi Ono, Tsukuba, JP;
Fuminori Tanaka, Daito, JP;
Ryusuke Horibe, Daito, JP;
Takeshi Inoda, Daito, JP;
Rikuo Takano, Daito, JP;
Kiyoshi Sugiyama, Mitaka, JP;
Toshimi Fukuoka, Yokohama, JP;
Masatoshi Ono, Tsukuba, JP;
Funai Electric Co., Ltd., Daito-shi, JP;
Funai Electric Advanced Applied Technology Research Institute Inc., Daito-shi, JP;
Abstract
A differential microphone includes a housing having a first space and a second space formed therein, and a first diaphragm arranged within the housing. A first opening connecting the first space to outside and a second opening connecting the second space to the outside are formed in the housing. A dimension of the first opening and the second opening in a first direction perpendicular to a straight line passing through centers of both openings is longer than a dimension of the first opening and the second opening in a second direction parallel to the straight line passing through the centers of both openings.