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:
Mar. 21, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Hiroshi Saito, Kawasaki, JP;
Shunsuke Murakami, Kawasaki, JP;
Miki Ueda, Tokyo, JP;
Hidenori Tanaka, Yokohama, JP;
Takanori Matsuda, Chofu, JP;
Takayuki Watanabe, Yokohama, JP;
Makoto Kubota, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A piezoelectric ceramic contains a main component, Mn as a first auxiliary component, and a second auxiliary component containing at least one element selected from the group consisting of Cu, B, and Si. The main component contains a perovskite metal oxide having the following general formula (1):(BaCa)(TiZr)O(0.100≦≦0.145,0.010≦≦0.039)  (1) The amount b (mol) of Mn per mole of the metal oxide is in the range of 0.0048≦b≦0.0400, the second auxiliary component content on a metal basis is 0.001 parts by weight or more and 4.000 parts by weight or less per 100 parts by weight of the metal oxide, and the value a of the general formula (1) is in the range of 0.9925+b≦a≦1.0025+b.