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:
Oct. 09, 2012
Filed:
Oct. 27, 2010
Shinsuke Hashimoto, Tokyo, JP;
Masato Konno, Tokyo, JP;
Momoyo Nitta, Tokyo, JP;
Tomohiro Yamashita, Tokyo, JP;
Hiroshi Sasaki, Tokyo, JP;
Shinsuke Hashimoto, Tokyo, JP;
Masato Konno, Tokyo, JP;
Momoyo Nitta, Tokyo, JP;
Tomohiro Yamashita, Tokyo, JP;
Hiroshi Sasaki, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A purpose of the present invention is to provide a dielectric ceramic composition which is available to obtain a multilayer ceramic capacitor having a high specific permittivity and a small temperature change of capacitance. A dielectric ceramic composition comprises a dielectric main component composed of 86.32 to 97.64 mol % of BaTiO, 0.01 to 10.00 mol % of YOand 0.01 to 10.00 mol % of MgO and 0.001 to 0.200 mol % of VO, 0.01 to 1.0 mol % of more than one kind of a first additive selected from a group composed of MnO, CrO, CoO, 0.5 to 10.0 mol % of a second additive which is {Baα, Ca (1−α)}SiO(note, 0≦α≦1), and Sr: 10 to 500 ppm, S: 10 to 50 ppm, Al: 10 to 50 ppm, Fe: 10 to 50 ppm, Zr: 100 to 800 ppm, Y: 10 to 100 ppm, Hf: 10 to 100 ppm to 100 parts by weight of BaTiO.