Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...
Reexamination Certificate
2008-07-24
2009-06-23
Group, Karl E (Department: 1793)
Compositions: ceramic
Ceramic compositions
Titanate, zirconate, stannate, niobate, or tantalate or...
C264S615000
Reexamination Certificate
active
07550402
ABSTRACT:
A ceramic electronic device including a dielectric layer, wherein the dielectric layer includes a main component expressed by a composition formula of BamTiO2+m, wherein “m” satisfies 0.995≦m≦1.010 and a ratio of Ba and Ti satisfies 0.995≦Ba/Ti≦1.010, and a subcomponent (a sixth subcomponent) including an oxide of Al; and a content of the Al compound is 0 to 4.0 moles (note that 0 is not included) in terms of Al2O3with respect to 100 moles of the main component; and preferably, the dielectric layer includes a segregation phase, and the segregation phase includes an oxide of Al.
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Ito Kazushige
Sato Akira
Group Karl E
Oliff & Berridg,e PLC
TDK Corporation
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