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:
Sep. 25, 2012
Filed:
Sep. 25, 2009
Zuyi Zhang, Yokohama, JP;
Jumpei Hayashi, Yokohama, JP;
Kenji Takashima, Saitama, JP;
Tatsuo Furuta, Machida, JP;
Zuyi Zhang, Yokohama, JP;
Jumpei Hayashi, Yokohama, JP;
Kenji Takashima, Saitama, JP;
Tatsuo Furuta, Machida, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is a ferroelectric ceramic material containing BaTiOas a main component which can control a Curie temperature in a wide range, has no phase transition in the vicinity of a room temperature, and exhibits excellent ferroelectric characteristics. The ferroelectric ceramic material includes an oxide represented by the formula: (100−a−b)BaTiO.aBiO.bMO, where M represents a trivalent metal other than Bi, and a and b satisfy 1≦a≦15, 0≦b≦5, and 5≦a+3≦15 and M is preferably a trivalent metal selected from fifth period transition metals or rare earth metals having an atomic number of 59 or higher to 69 or lower.