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:
Oct. 23, 2012
Filed:
Dec. 21, 2007
Takao Ohnishi, Nagoya, JP;
Takashi Wada, Nagoya, JP;
Tomohiro Yamada, Nagoya, JP;
Makoto Tani, Nagoya, JP;
Takao Ohnishi, Nagoya, JP;
Takashi Wada, Nagoya, JP;
Tomohiro Yamada, Nagoya, JP;
Makoto Tani, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A method for manufacturing a piezoelectric/electrostrictive element includes a step of subjecting the piezoelectric/electrostrictive film to a heat treatment and a polarization treatment after the film is allowed to stand until the value of an electric constant has converged after the heat treatment. The piezoelectric/electrostrictive element manufactured in this method has small stress remaining in the piezoelectric/electrostrictive film, and predetermined performance regarding, for example, a displacement amount, a displacement-generating force, and an electric power efficiency (consumed electric power) as a piezoelectric/electrostrictive element (piezoelectric/electrostrictive film) is never spoiled.