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:
May. 12, 2009
Filed:
Sep. 07, 2005
Hitoshi Shindo, Nishio, JP;
Eturo Yasuda, Nishio, JP;
Masatoshi Ikeda, Nishio, JP;
Masaya Nakamura, Nagoya, JP;
Tatsuhiko Nonoyama, Chiryu, JP;
Toshiatsu Nagaya, Kuwana, JP;
Hitoshi Shindo, Nishio, JP;
Eturo Yasuda, Nishio, JP;
Masatoshi Ikeda, Nishio, JP;
Masaya Nakamura, Nagoya, JP;
Tatsuhiko Nonoyama, Chiryu, JP;
Toshiatsu Nagaya, Kuwana, JP;
Nippon Soken, Inc., Nishio, JP;
Denso Corporation, Kariya, JP;
Abstract
A stacked piezoelectric element obtained by alternately stacking a piezoelectric ceramic layer and an electrode layer, wherein said electrode layer mainly comprises an electrically conducting base metal electrode material, and the region held between the electrode layer positioned at the top of each ceramic layer and the electrode layer positioned at the bottom of each ceramic layer contains a material having no piezoelectricity, in which a constituent element of said material having no piezoelectricity is uniformly dispersed so as not to have local distribution of a distributed strength exceeding 2 times the distributed strength which is distributed in a largest number of places and is not 0.