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:
Jun. 13, 2006
Filed:
Mar. 09, 2004
Kazuhide Sato, Aichi-pref., JP;
Shinichi Okamoto, Kariya, JP;
Akira Fujii, Yokkaichi, JP;
Denso Corporation, Kariya, JP;
Abstract
A laminated piezoelectric element () having a ceramic laminate () formed by alternatively laminating a plurality of piezoelectric layers () and a plurality of internal electrode layer (). A side surface () provided with the first side-surface electrode () is further provided with first recessed groove portions () which are the recessed grooves exposing the ends of the second internal electrodes () in the bottom portions () thereof, and a side surface () provided with the second side-surface electrode () is further provided with second recessed groove portions () which are the recessed grooves exposing the ends of the first internal electrodes () in the bottom portions. The first groove portions () and the second groove portions () are filled with an insulating filler material () having electrically insulating property so as to cover the ends of the second internal electrodes () and the ends of the first internal electrodes (). The insulating filler material () comprises an insulating resin () having electrically insulating property and inorganic particles () of an inorganic material contained in the insulating resin ().