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:
Sep. 21, 2010
Filed:
Mar. 28, 2008
Kouichi Kakuda, Narita, JP;
Takashi Suzuki, Chiba, JP;
Sachiko Takano, Ichikawa, JP;
Hiroshi Momoi, Yuri Honjo, JP;
Shinichi Kondo, Yurihonjo, JP;
Masaki Takahashi, Nikaho, JP;
Kouichi Kakuda, Narita, JP;
Takashi Suzuki, Chiba, JP;
Sachiko Takano, Ichikawa, JP;
Hiroshi Momoi, Yuri Honjo, JP;
Shinichi Kondo, Yurihonjo, JP;
Masaki Takahashi, Nikaho, JP;
TDK Corporation, Tokyo, JP;
Abstract
The present invention relates to a dielectric ceramic composition comprising a main component including at least one selected from barium titanate, strontium titanate and calcium titanate, and as a subcomponent, a glass component including an oxide of B, wherein a content of said glass component is 2 to 7 wt % with respect to 100 wt % of said main component. According to the present invention, there are provided a dielectric ceramic composition wherein a layer can be made thinner by relatively decreasing a content of the glass component, etc., as well as having good properties (specific permittivity, loss Q value and insulation resistance), and a complex electronic device such as a multilayer filter or a multilayer ceramic capacitor, which has a dielectric layer composed of the dielectric ceramic composition.