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:
Dec. 18, 2007
Filed:
Feb. 23, 2005
Toshikatsu Kashiwaya, Inazawa, JP;
Yukihisa Takeuchi, Nishikamo-gun, JP;
Yuya Kikuta, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A piezoelectric/electrostrictive porcelain composition capable of being manufactured at a comparatively low firing temperature is provided, as well as a piezoelectric/electrostrictive ceramic or a piezoelectric/electrostrictive portion which is dense and superior in crystallinity and which has superior piezoelectric/electrostrictive characteristics and durability even under high temperature and high humidity conditions. The piezoelectric/electrostrictive porcelain composition includes a piezoelectric/electrostrictive component containing lead titanate zirconate, and 0.5 to 5% by mass of glass component containing 8% by mass or less of silicic acid.