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:
Jul. 15, 2008
Filed:
Aug. 30, 2004
Makoto Kubota, Kanagawa, JP;
Motokazu Kobayashi, Kanagawa, JP;
Shinji Eritate, Kanagawa, JP;
Hisao Suzuki, Aichi, JP;
Fumio Uchida, Osaka, JP;
Chiemi Shimizu, Osaka, JP;
Kenji Maeda, Osaka, JP;
Makoto Kubota, Kanagawa, JP;
Motokazu Kobayashi, Kanagawa, JP;
Shinji Eritate, Kanagawa, JP;
Hisao Suzuki, Aichi, JP;
Fumio Uchida, Osaka, JP;
Chiemi Shimizu, Osaka, JP;
Kenji Maeda, Osaka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Fuji Chemical Co. Ltd, Osaka, JP;
Abstract
A piezoelectric element including a vibrating plate, a lower electrode, a piezoelectric film and an upper electrode laminated in this order, wherein the lower electrode, the upper electrode and the piezoelectric film are formed by a perovskite type oxide while the vibrating plate is formed by a metal oxide, and a junction interface is substantially absent between the vibrating plate and the lower electrode, between the lower electrode and the piezoelectric film and between the piezoelectric film and the upper electrode.