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:
Aug. 27, 2013
Filed:
Jul. 24, 2009
Takayuki Watanabe, Kawasaki, JP;
Takanori Matsuda, Chofu, JP;
Hiroshi Saito, Yokohama, JP;
Hiroshi Funakubo, Yokohama, JP;
Nobuhiro Kumada, Kofu, JP;
Takashi Iijima, Tsukuba, JP;
Bong-yeon Lee, Tsukuba, JP;
Takayuki Watanabe, Kawasaki, JP;
Takanori Matsuda, Chofu, JP;
Hiroshi Saito, Yokohama, JP;
Hiroshi Funakubo, Yokohama, JP;
Nobuhiro Kumada, Kofu, JP;
Takashi Iijima, Tsukuba, JP;
Bong-Yeon Lee, Tsukuba, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
University of Yamanashi, Kofu-Shi, JP;
Tokyo Institute of Technology, Tokyo, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Abstract
Provided is a piezoelectric material which includes a compound free of lead and alkali metal and has a good piezoelectric property. The piezoelectric material where tungsten bronze structure oxides being free of lead and alkali metal and represented by ABOand A'B′Oare combined to form a morphotropic phase boundary has good piezoelectric property. The ABOis b(BaBiNbO)+(1−b)(BaAgNbO) (0≦b≦1 and 0<α≦0.4), and the A′B′Ois c(SrNbO)+d(CaNbO)+e(BaNbO) (0≦c≦0.8, 0≦d≦0.4, 0.1≦e≦0.9, and c+d+e=1).