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:
Jan. 19, 2016
Filed:
Apr. 23, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Hiroshi Saito, Kawasaki, JP;
Kanako Oshima, Tokyo, JP;
Kaoru Miura, Matsudo, JP;
Hisato Yabuta, Machida, JP;
Jumpei Hayashi, Chofu, JP;
Canon Kabushiki Kiasha, Tokyo, JP;
Abstract
There is provided a piezoelectric ceramic having a high and stable piezoelectric constant and a high and stable mechanical quality factor in a wide operating temperature range, and a piezoelectric element according to the present invention includes a main component containing a perovskite type metal oxide having the following general formula (1) or (2); and Mn as a first auxiliary component,(BaCa)(TiSnZr)O  (1)(0.08≦x≦0.20, 0.01≦y≦0.04, 0<z≦0.04)(BaCa)(TiSn)O  (2)(0.08≦x≦0.20, 0.01≦y≦0.04)wherein the amount b (mol) of Mn per mole of the metal oxide is in the range of 0.0048≦b≦0.0400, and the value a of the general formula (1) or (2) is in the range of 0.9925+b≦a≦1.0025+b.