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:
Jan. 25, 2005
Filed:
Apr. 16, 2002
Kazuhide Sato, Ama-gun, JP;
Ryonosuke Tera, Oobu, JP;
Naoyuki Kawazoe, Hashima, JP;
Denso Corporation, , JP;
Abstract
A piezoelectric element and an injector using the same piezoelectric element are disclosed, which are so high in reliability as not to be shorted even in a high humidity environment, are small in size, are low in cost and are high in heat radiation capability. The piezoelectric element comprises a ceramic laminate () including a plurality of ceramic layers of a piezoelectric ceramic () and a plurality of internal electrode layers (), stacked alternately. At least an organic insulating layer () of an organic material is formed on at least a part of the surface of the ceramic laminate (), and at least an inorganic insulating layer () of an inorganic material is formed on the organic insulating layer ().