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. 15, 2008
Filed:
Oct. 04, 2006
Isao Kanada, Tokyo, JP;
Ryohei Nakano, Tokyo, JP;
Tatsuya Kikuchi, Tokyo, JP;
Hisashi Kobuke, Tokyo, JP;
Masaru Abe, Tokyo, JP;
Kouji Tashiro, Tokyo, JP;
Matsumi Watanabe, Tokyo, JP;
Isao Kanada, Tokyo, JP;
Ryohei Nakano, Tokyo, JP;
Tatsuya Kikuchi, Tokyo, JP;
Hisashi Kobuke, Tokyo, JP;
Masaru Abe, Tokyo, JP;
Kouji Tashiro, Tokyo, JP;
Matsumi Watanabe, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
There is provided a dielectric ceramic material in which the firing temperature dependency of the relative dielectric constant can be suppressed and the mechanical strength can be improved. Specifically, there is provided a dielectric ceramic material including: main constituents given by a composition located in the region, in a ternary diagram of ZrO, SnOand TiOshown in FIG., bounded by point A, point B, point C, point D, point E and point F; and ZnO: 0.5 to 5 wt %, NiO: 0.1 to 3 wt %, and SiO: 0.008 to 1.5 wt % in relation to the total weight of the main constituents. The dielectric ceramic material can include NbO: 0.2 wt % or less and KO: 0.035 wt % or less in relation to the total weight of the main constituents.