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:
Dec. 28, 2010
Filed:
Dec. 20, 2004
Applicants:
Yasuharu Onishi, Tokyo, JP;
Yasuhiro Sasaki, Tokyo, JP;
Nozomi Toki, Tokyo, JP;
Inventors:
Assignee:
NEC Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01); H01L 41/00 (2006.01); H02N 2/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A piezoelectric acoustic elementof the present invention comprising a hollow casinghaving a opening, a piezoelectric elementthat is disposed in said casingand bends when a voltage is applied thereto, and diaphragmprovided at the openingof said casing; wherein said piezoelectric elementand said diaphragmare joined through a vibration transmitting member