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:
Dec. 25, 2007
Filed:
Dec. 17, 2003
Hiroshi Sasaki, Chuo-ku, JP;
Hitoshi Tanaka, Chuo-ku, JP;
Yasuo Niwa, Chuo-ku, JP;
Matsumi Watanabe, Chuo-ku, JP;
Tomoaki Nonaka, Chuo-ku, JP;
Hiroshi Sasaki, Chuo-ku, JP;
Hitoshi Tanaka, Chuo-ku, JP;
Yasuo Niwa, Chuo-ku, JP;
Matsumi Watanabe, Chuo-ku, JP;
Tomoaki Nonaka, Chuo-ku, JP;
TDK Corporation, Tokyo, JP;
Abstract
A dielectric ceramic composition, comprising a main component including at least a dielectric oxide having a composition expressed by [(CaSr)O][(TiZrHf)O], a first subcomponent including a Mn oxide and/or an Al oxide and a glass component, wherein 'm', 'x', “y” and “z” indicating composition mole ratios in the formula included in the main component are in relationships of 0.90≦m≦1.04, preferably 1.005≦m≦1.025, 0.5≦x<1, preferably 0.6≦x≦0.9, 0.01≦y≦0.10, preferably 0.02≦y≦0.07 and 0<z≦0.20, preferably 0<z≦0.10.