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. 19, 2005
Filed:
Sep. 11, 2002
Hirofumi Yamaguchi, Komaki, JP;
Toshikatsu Kashiwaya, Inazawa, JP;
Kazuhiro Yamamoto, Nagoya, JP;
Masao Takahashi, Ama-gun, JP;
Hirofumi Yamaguchi, Komaki, JP;
Toshikatsu Kashiwaya, Inazawa, JP;
Kazuhiro Yamamoto, Nagoya, JP;
Masao Takahashi, Ama-gun, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A piezoelectric/electrostrictive film device is provided, including a piezoelectric/electrostrictive layer and at least a pair of electrodes formed on the piezoelectric/electrostrictive layer. A perovskite piezoelectric/electrostrictive material of the piezoelectric/electrostrictive layer contains Pb, and the perovskite piezoelectric/electrostrictive material contains MnOin an amount of 0.1 to 0.5% by weight. Specifically, the perovskite piezoelectric/electrostrictive material contains Pb(MgNb)O—PbZrO—PbTiOin which a part of Pb is substituted with Sr.