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:
Feb. 08, 2005
Filed:
Dec. 19, 2003
Tomoyuki Nakamura, Omihachiman, JP;
Hiroyasu Konaka, Kusatsu, JP;
Akira Kata, Omihachiman, JP;
Kazuo Muto, Takatsuki, JP;
Harunobu Sano, Kyoto, JP;
Tomoyuki Nakamura, Omihachiman, JP;
Hiroyasu Konaka, Kusatsu, JP;
Akira Kata, Omihachiman, JP;
Kazuo Muto, Takatsuki, JP;
Harunobu Sano, Kyoto, JP;
Abstract
A dielectric ceramic includes, in composition, a perovskite-type compound having the general formula ABOcontaining Ba, Ca and Ti, and an additive component containing Si, R(La or the like), and M (Mn or the like), the additive component not being solid-dissolved and, moreover, the major component existing in at least 90% of the cross-section of each of the crystal grains of which the number is equal to at least 85% of that of all of the crystal grains contained in the dielectric ceramic, at least the Ba, the Ca, the Ti, the Si, the R, and the M being contained at at least 85% of the analytical points in the crystal grain boundaries of the dielectric ceramic.