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:
May. 15, 2012
Filed:
Mar. 12, 2009
Applicants:
Hiroyuki Kobayashi, Kanagawa-ken, JP;
Yukio Sakashita, Kanagawa-ken, JP;
Inventors:
Hiroyuki Kobayashi, Kanagawa-ken, JP;
Yukio Sakashita, Kanagawa-ken, JP;
Assignee:
Fujifilm Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/462 (2006.01); H01L 27/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for producing a piezoelectric oxide having a composition (Ba, Bi, A)(Ti, Fe, M)O, where each of A and M represents one or more metal elements. The composition is determined so as to satisfy the conditions (1) and (2),0.98≦TF(P)≦1.02,  (1)TF(BiFeO)<TF(AMO)<TF(BaTiO),  (2)where TF(P) is the tolerance factor of the perovskite oxide, and TF(BaTiO), TF(BiFeO), and TF(AMO) are respectively the tolerance factors of the oxides BaTiO, BiFeO, and AMO.