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. 21, 2009
Filed:
Mar. 28, 2006
Koji Sumi, Nagano-ken, JP;
Hironobu Kazama, Nagano-ken, JP;
Koji Sumi, Nagano-ken, JP;
Hironobu Kazama, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
Disclosed are a piezoelectric element which can obtain a large strain with a low drive voltage, a liquid-jet head and a liquid-jet apparatus. The piezoelectric element includes: a lower electrode; an upper electrode; and a piezoelectric film which is made of lead zirconate titanate (PZT), and which has perovskite crystals having priority orientations of the (100) plane, the piezoelectric film being interposed between the lower electrode and the upper electrode. In the piezoelectric element, an X-ray diffraction peak position derived from the (100) planes of the piezoelectric film is within a range of 2θ=21.79 to 21.88.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile