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. 31, 2012
Filed:
Mar. 20, 2009
Tomoaki Nonaka, Tokyo, JP;
Tetsuo Takaishi, Tokyo, JP;
Kenta Iwasawa, Tokyo, JP;
Hiroshi Sasaki, Tokyo, JP;
Tomoaki Nonaka, Tokyo, JP;
Tetsuo Takaishi, Tokyo, JP;
Kenta Iwasawa, Tokyo, JP;
Hiroshi Sasaki, Tokyo, JP;
TDK Corporation, Toyko, JP;
Abstract
The present invention relates to a dielectric ceramic composition comprises a main component including a dielectric oxide having a composition shown by [(CaSr)O][(ZrTiHfMn)O], note that, 0.991≦m≦1.010, 0≦x≦1, 0≦y≦0.1, 0<z≦0.02, 0.002<α≦0.05), 0.1 to 0.5 parts by mol of AlOand 0.5 to 5.0 parts by mol of SiOwith respect to 100 parts by mol of the main component. A purpose of the present invention is to provide a dielectric ceramic composition available to prevent the occurrence of crack even when a dielectric layer is made thin, for example, 2 μm or less, while maintaining various advantageous properties of a dielectric ceramic composition of [(CaSr)O][(TiZrHf)O] type.