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. 08, 2008
Filed:
Jan. 17, 2006
Applicants:
Kazushige Ito, Chou-ku, JP;
Akira Sato, Chuo-ku, JP;
Inventors:
Kazushige Ito, Chou-ku, JP;
Akira Sato, Chuo-ku, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/468 (2006.01);
U.S. Cl.
CPC ...
Abstract
A dielectric ceramic composition comprising a main component including Ba, Ca and Ti and having a perovskite crystal structure expressed by a general formula ABOand a fourth subcomponent including a compound of Zr; wherein a content of the fourth subcomponent with respect to 100 moles of the main component is larger than 0 mole and smaller than 5 moles in terms of Zr and, preferably, a segregation phase including the compound of Zr is provided.