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. 06, 2016
Filed:
Jun. 26, 2012
Jumpei Hayashi, Yokohama, JP;
Tatsuo Furuta, Machida, JP;
Yasushi Shimizu, Fujisawa, JP;
Takanori Matsuda, Chofu, JP;
Hiroshi Saito, Kawasaki, JP;
Makoto Kubota, Yokohama, JP;
Jumpei Hayashi, Yokohama, JP;
Tatsuo Furuta, Machida, JP;
Yasushi Shimizu, Fujisawa, JP;
Takanori Matsuda, Chofu, JP;
Hiroshi Saito, Kawasaki, JP;
Makoto Kubota, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A lead-free piezoelectric material that has stable, excellent piezoelectric constant and mechanical quality factor in a wide operating temperature range is provided. A piezoelectric material include a perovskite-type metal oxide represented by (BaCa)(TiZr)O(where 1.00≦a≦1.01, 0.155≦x≦0.300, 0.041≦y≦0.069) as a main component, and manganese incorporated in the perovskite-type metal oxide. The manganese content relative to 100 parts by weight of the perovskite-type metal oxide is 0.12 parts by weight or more and 0.40 parts by weight or less on a metal basis.