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:
Jan. 24, 2012
Filed:
May. 11, 2009
Shusaku Umemoto, Tokyo, JP;
Takashi Suzuki, Tokyo, JP;
Kouichi Kakuda, Narita, JP;
Hiroshi Momoi, Yurihonjo, JP;
Masaki Takahashi, Nikaho, JP;
Shinichi Kondo, Yurihonjo, JP;
Shusaku Umemoto, Tokyo, JP;
Takashi Suzuki, Tokyo, JP;
Kouichi Kakuda, Narita, JP;
Hiroshi Momoi, Yurihonjo, JP;
Masaki Takahashi, Nikaho, JP;
Shinichi Kondo, Yurihonjo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A dielectric ceramic composition comprises as a main component, Cu oxide, Si oxide and one selected from the group consisting of Zn oxide alone and a combination of Mg oxide and Zn oxide, as a subcomponent, a glass component including B oxide and at least one selected from the group consisting of Si oxide, Ba oxide, Ca oxide, Sr oxide, Li oxide and Zn oxide, and having a glass softening point is 750° C. or less, wherein a content of said glass component is 1.5 to 15 wt % with respect to 100 wt % of said main component. According to the present invention, a dielectric ceramic composition can be provided which is available to be sintered at low temperature (for example, 950° C. or lower) while comparatively decreasing contents of a glass component, which shows good properties (specific permittivity, loss Q value and insulation resistance), and which is available to perform cofiring different materials.