Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...
Reexamination Certificate
2009-01-16
2009-12-29
Group, Karl E (Department: 1793)
Compositions: ceramic
Ceramic compositions
Titanate, zirconate, stannate, niobate, or tantalate or...
C501S139000, C361S321400
Reexamination Certificate
active
07638451
ABSTRACT:
A dielectric ceramic contains a barium titanate compound oxide as a main component; at least one rare earth element R selected from Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; Mg; and Ni, such that a crystalline compound oxide containing the rare earth element R, Ni, and Ti as main components is present. Dielectric ceramic layers are made of the dielectric ceramic. Accordingly, even when a higher electric field is continuously applied under a high-temperature atmosphere for a long time, high reliability can be ensured.
REFERENCES:
patent: 06227861 (1994-08-01), None
patent: WO-2006025205 (2006-03-01), None
International Search Report for PCT/JP2007/063294 dated Aug. 14, 2007.
Inoue Noriyuki
Okamatsu Toshihiro
Dickstein , Shapiro, LLP.
Group Karl E
Murata Manufacturing Co. Ltd.
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