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:
Dec. 12, 2017
Filed:
Dec. 07, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Tatsuya Suzuki, Kawasaki, JP;
Masami Tsukamoto, Yokohama, JP;
Mikio Shimada, Tokyo, JP;
Toshihiro Ifuku, Yokohama, JP;
Takanori Matsuda, Chofu, JP;
Makoto Kubota, Yokohama, JP;
Jumpei Hayashi, Chofu, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided are a barium titanate-based piezoelectric ceramics having satisfactory piezoelectric performance and a satisfactory mechanical quality factor (Q), and a piezoelectric element using the same. Specifically provided are a piezoelectric ceramics, including: crystal particles; and a grain boundary between the crystal particles, in which the crystal particles each include barium titanate having a perovskite-type structure and manganese at 0.04% by mass or more and 0.20% by mass or less in terms of a metal with respect to the barium titanate, and the grain boundary includes at least one compound selected from the group consisting of BaTiOand BaTiO, and a piezoelectric element using the same.