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. 27, 2016
Filed:
Nov. 13, 2013
Ngk Insulators, Ltd., Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A piezoelectric element is a laminated type piezoelectric element including a plurality of piezoelectric layers laminated on each other; and an internal electrode layer disposed between adjacent piezoelectric layers. In the piezoelectric element, coating layers are disposed on a side surface of the piezoelectric element so as to cover at least an effective portion of the internal electrode layer that is exposed at the side surface. The coating layers contiguously extend from the side surface of the piezoelectric element to at least one of upper and lower surfaces of the piezoelectric element. A step is formed at the at least one of upper and lower surface of the piezoelectric element by the coating layers formed at an edge region.