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:
Aug. 24, 1999
Filed:
Aug. 30, 1996
Kazumasa Ohnishi, Niigata-ken, JP;
Katsutoshi Sakurai, Niigata-ken, JP;
Akihiko Ohashi, Niigata-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A piezoelectric vibrator having three parallel vibrator arms formed from piezoelectric material in which dielectric polarization is generated through the application of electric fields extending widthwise between first electrodes formed on top surfaces thereof and between second electrodes formed on bottom surfaces, and also between the first and second electrodes through the piezoelectric material, such that a portion of the dielectric polarization occurs at the surfaces of the vibrator arms, and a portion also occurs within the vibrator arms. When ac driving voltages are applied to the electrodes, the vibrator arms vibrate at large vibration amplitudes due to strains created in the portion of dielectric polarization within the vibrator arms.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile