Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...
Reexamination Certificate
2008-01-15
2008-01-15
Group, Karl E (Department: 1755)
Compositions: ceramic
Ceramic compositions
Titanate, zirconate, stannate, niobate, or tantalate or...
C501S135000, C501S136000, C252S06290R, C257S295000, C257S310000
Reexamination Certificate
active
10547134
ABSTRACT:
A thin film capacity element composition includes a first bismuth layer-structured compound having positive temperature characteristics, that a specific permittivity rises as the temperature rises, in at least a part of a predetermined temperature range and a second bismuth layer-structured compound having negative temperature characteristics, that a specific permittivity declines as a temperature rises, in at least a part of said predetermined temperature range at any mixing ratio; wherein the bismuth layer-structured compound is expressed by a composition formula of CaxSr(1-x)Bi4Ti4O15.
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Funakubo Hiroshi
Sakashita Yukio
Group Karl E
TDK Corporation
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