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:
Jul. 07, 2009
Filed:
Dec. 30, 2002
Applicants:
Atsuhiro Torii, Otsu, JP;
Shinichi Kato, Shiga-ken, JP;
Tomohisa Tonogaki, Shiga-ken, JP;
Masaru Kojima, Hikone, JP;
Kenji Tanaka, Shiga-ken, JP;
Inventors:
Atsuhiro Torii, Otsu, JP;
Shinichi Kato, Shiga-ken, JP;
Tomohisa Tonogaki, Shiga-ken, JP;
Masaru Kojima, Hikone, JP;
Kenji Tanaka, Shiga-ken, JP;
Assignee:
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G 23/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Ba(OH).8HO is fused by heating. The fused Ba(OH)is allowed to react with TiOpowder having a specific surface area of 250 m/g or more to prepare a cubic crystalline BaTiOhaving high crystallinity. The BaTiOis calcined to yield a fine, tetragonal crystalline BaTiOpowder having high crystallinity. Thus, a high quality BaTiOhaving high crystallinity can be prepared at a low cost.