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:
Aug. 25, 2009
Filed:
Feb. 21, 2008
Sanshiro Aman, Narita, JP;
Takashi Kojima, Narita, JP;
Mari Miyauchi, Narita, JP;
Masakazu Hosono, Narita, JP;
Dan Sakurai, Yurihonjo, JP;
Kosuke Takano, Narita, JP;
Nobuto Morigasaki, Narita, JP;
Sanshiro Aman, Narita, JP;
Takashi Kojima, Narita, JP;
Mari Miyauchi, Narita, JP;
Masakazu Hosono, Narita, JP;
Dan Sakurai, Yurihonjo, JP;
Kosuke Takano, Narita, JP;
Nobuto Morigasaki, Narita, JP;
TDK Corporation, Tokyo, JP;
Abstract
The invention aims at providing a dielectric ceramic composition including BaTiOwhere 'm' satisfies 0.99≦m≦1.01 and BaZrOwhere 'n' satisfies 0.99≦n≦1.01, an oxide of Mg, an oxide of R where R is at least one selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, an oxide of at least one element selected from Mn, Cr, Co and Fe, and an oxide of at least one element selected from Si, Li, Al, Ge and B. 35 to 65 moles of BaZrO, 4 to 12 moles of an oxide of Mg, 4 to 15 moles of an oxide of R, 0.5 to 3 moles of an oxide of Mn, Cr, Co and Fe, and 3 to 9 moles of an oxide of Si, Li, Al, Ge and B are included therein per 100 moles of the BaTiO.