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:
Dec. 01, 2009
Filed:
May. 31, 2007
Toshihiro Okamatsu, Moriyama, JP;
Takashi Hiramatsu, Kusatsu, JP;
Harunobu Sano, Kyoto, JP;
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Abstract
A dielectric ceramic is provided having a high relative dielectric constant, and in the case in which it is used for a multilayer ceramic capacitor, high insulating properties and superior reliability can be obtained even when the thickness of a dielectric ceramic layer is decreased. The dielectric ceramic used for forming the dielectric ceramic layer of a multilayer ceramic capacitor has a composition represented by 100 (BaCaSrGd)(TiZrHfMg)O+pMnO+qSiO+rCuO, in which 0.995≦k≦1.010, 0≦w<0.04, 0≦x≦0.04, 0≦y≦0.10, 0≦z≦0.05, 0.015≦m≦0.035, 0.015≦n≦0.035, 0.01≦p≦1.0, 0.5≦q≦2.5, and 0.01≦r≦5.0. In addition, a is a value selected with respect to the deviation from 3 so that the primary component is electrically neutral.