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:
May. 23, 2017
Filed:
Aug. 21, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
University of Yamanashi, Yamanashi, JP;
Shunsuke Murakami, Kawasaki, JP;
Takayuki Watanabe, Yokohama, JP;
Miki Ueda, Tokyo, JP;
Nobuhiro Kumada, Kofu, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
UNIVERSITY OF YAMANASHI, Kofu-Shi, JP;
Abstract
Provided is a lead-free piezoelectric material having a high Curie temperature, a satisfactory mechanical quality factor, and a satisfactory Young's modulus, and a piezoelectric element and a multilayered piezoelectric element each using the piezoelectric material. The piezoelectric material contains 0.04 mol % or more to 2.00 mol % or less of Cu with respect to 1 mol of a perovskite-type metal oxide represented by the following general formula: (KBiBa)Na(NbTi)Owhere relationships of 0<v≦0.39, 0<w≦0.39, 0.9≦w/v≦1.1, 0.80≦x≦0.95, and 0.85≦y≦0.95 are satisfied.