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:
Apr. 14, 2009
Filed:
Nov. 30, 2006
Daisuke Makibuchi, Soraku-gun, JP;
Kazuhiro Otsuka, Soraku-gun, JP;
Kiyohiro Iioka, Soraku-gun, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
A surface acoustic wave elementcomprises a piezoelectric substrate, IDT electrodesof an odd number not less than three formed along a propagation direction of surface acoustic waves that propagates on the piezoelectric substrate, wherein IDT electrodesof the odd number of IDT electrodesdisposed on both sides of an IDT electrodethat is located at the center are connected to first and second reference potential terminals, respectively, and the first and second reference potential terminalsandare formed asymmetrically with respect to a virtual central axis A that passes through the center of the IDT electrodelocated at the center and provided in a direction perpendicular to the propagation direction.