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. 16, 2013
Filed:
Sep. 25, 2008
Tsuyoshi Setoguchi, Kirishima, JP;
Tsuyoshi Setoguchi, Kirishima, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
To provide a multi-layer piezoelectric element which is easy to be fabricated and which exhibits excellent durability, even when it is driven continuously for a long time under high electric field and high pressure. The multi-layer piezoelectric element comprising a stacked body wherein a plurality of piezoelectric layers and a plurality of metal layers are stacked alternately one on another and it is driven by applying a voltage to adjacent and opposing metal layers, wherein an average grain size of the piezoelectric crystal grains in a region of the piezoelectric layer, in which region the piezoelectric layer is sandwiched between the adjacent and opposing internal electrode in the stacking direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile