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:
Sep. 01, 2009
Filed:
Aug. 07, 2008
Hiroaki Kaida, Moriyama, JP;
Shungo Kanai, Oumihachiman, JP;
Hitoshi Sakaguchi, Toyama, JP;
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Abstract
An energy-trapping strip piezoelectric vibrator utilizing a third harmonic overtone of a thickness shear mode is provided. A piezoelectric vibratorhas a strip piezoelectric ceramic substratepolarized in a longitudinal direction, and first and second excitation electrodesandprovided on first and second principal surfacesandof the piezoelectric ceramic substrate. An excitation regionincluding a piezoelectric vibration portion that includes a portion where the first and second excitation electrodesandoverlap and that utilizes harmonics of the thickness shear mode is formed. A region around the piezoelectric vibration portion is set as a non-excitation region. At least a region of the non-excitation region neighboring the piezoelectric vibration portion is a region having the same polarization axis direction as the excitation regionand a relatively small polarization degree or is an unpolarized region.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile