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:
Oct. 11, 2011
Filed:
Mar. 18, 2009
Jumpei Hayashi, Yokohama, JP;
Zuyi Zhang, Yokohama, JP;
Toshihiro Ifuku, Yokohama, JP;
Satoshi Wada, Kofu, JP;
Keisuke Yamato, Kofu, JP;
Nobuhiro Kumada, Kofu, JP;
Masaki Azuma, Uji, JP;
Hiroshi Funakubo, Yokohama, JP;
Takashi Iijima, Tsukuba, JP;
Soichiro Okamura, Tokyo, JP;
Jumpei Hayashi, Yokohama, JP;
Zuyi Zhang, Yokohama, JP;
Toshihiro Ifuku, Yokohama, JP;
Satoshi Wada, Kofu, JP;
Keisuke Yamato, Kofu, JP;
Nobuhiro Kumada, Kofu, JP;
Masaki Azuma, Uji, JP;
Hiroshi Funakubo, Yokohama, JP;
Takashi Iijima, Tsukuba, JP;
Soichiro Okamura, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is a piezoelectric material including a lead-free perovskite-type composite oxide which is excellent in piezoelectric characteristics and temperature characteristics and is represented by the general formula (1):ABO-A'BO-A″B′Oin which A is a Bi element; A′ is a rare earth element including La; B is at least one element selected from Ti, Zn, Sn and Zr; A″ is at least one element selected from Ba, Sr and Ca; B′ is at least one element selected from divalent, trivalent, pentavalent, tetravalent, and hexavalent elements; and x is a value of 0.10 or more and 0.95 or less, y is a value of 0 or more and 0.5 or less, and z is a value of 0 or more and 0.7 or less, provided that x+y+z=1.