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:
Mar. 15, 2011
Filed:
May. 22, 2009
Tatsuo Furuta, Kawasaki, JP;
Kaoru Miura, Matsudo, JP;
Kenichi Takeda, Yokohama, JP;
Makoto Kubota, Yokohama, JP;
Hiroshi Funakubo, Yokohama, JP;
Masaki Azuma, Kyoto, JP;
Nobuhiro Kumada, Kofu, JP;
Satoshi Wada, Kofu, JP;
Takashi Iijima, Tsukuba, JP;
Soichiro Okamura, Tokyo, JP;
Tatsuo Furuta, Kawasaki, JP;
Kaoru Miura, Matsudo, JP;
Kenichi Takeda, Yokohama, JP;
Makoto Kubota, Yokohama, JP;
Hiroshi Funakubo, Yokohama, JP;
Masaki Azuma, Kyoto, JP;
Nobuhiro Kumada, Kofu, JP;
Satoshi Wada, Kofu, JP;
Takashi Iijima, Tsukuba, JP;
Soichiro Okamura, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Tokyo Institute of Technology, Tokyo, JP;
Kyoto University, Kyoto-shi, JP;
University of Yamanashi, Kofu-shi, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Tokyo University of Science Educational Foundation Administrative Organization, Tokyo, JP;
Abstract
Provided are a piezoelectric material without using lead or an alkali metal, the piezoelectric material having a stable crystal structure in a wide temperature range, high insulation property, and high piezoelectric property, and a piezoelectric element using the piezoelectric material, in which the piezoelectric material is made of a metal oxide having a tetragonal crystal structure and expressed by Ba(SiGeTi)O(here, 0≦x≦1, 0≦y≦1, and 0≦z≦0.5), the piezoelectric element includes the piezoelectric material and a pair of electrodes sandwiching the piezoelectric material, and at least one of the pair of electrodes is made of SrRuOor Ni.