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:
Mar. 03, 2009
Filed:
Mar. 21, 2006
Applicant:
Xin-shan LI, Nagano-ken, JP;
Inventor:
Xin-Shan Li, Nagano-ken, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/187 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed are a piezoelectric element, which has a high withstand voltage and a longer durability life, a liquid-jet head and a liquid-jet apparatus. The piezoelectric element includes a lower electrode provided above a substrate, a piezoelectric layer provided above the lower electrode, and an upper electrode provided above the piezoelectric layer, and an electric resistivity of the piezoelectric layer is not lower than 20 MΩ·cm.