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. 01, 2016
Filed:
Mar. 26, 2014
Seiko Epson Corporation, Tokyo, JP;
Koji Sumi, Shiojiri, JP;
Kazuya Kitada, Suwa, JP;
Tomohiro Sakai, Matsumoto, JP;
Yasuaki Hamada, Chino, JP;
Tetsuya Isshiki, Shiojiri, JP;
Satoshi Kimura, Fujimi, JP;
Akio Ito, Matsumoto, JP;
Tsuneo Handa, Shimosuwa, JP;
Seiko Epson Corporation, , JP;
Abstract
A piezoelectric material contains a first component that is a rhombohedral crystal that is configured to have a complex oxide with a perovskite structure and Curie temperature Tc1, a second component that is a crystal other than a rhombohedral crystal that is configured to have a complex oxide with the perovskite structure and Curie temperature Tc2, and a third component that is configured to have a complex oxide with the perovskite structure in which the component is formed as the same crystal system as the second component and Curie temperature Tc3, in which Tc1 is higher than Tc2, and Tc3 is equal to or higher than Tc1.