Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Reexamination Certificate
2005-04-26
2009-08-25
Ha, Nguyen T (Department: 2831)
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
C361S311000, C361S312000, C361S321100, C361S321200, C361S306100
Reexamination Certificate
active
07580241
ABSTRACT:
A thin film capacitor element composition having a bismuth layered compound with a c-axis oriented substantially vertical to the substrate surface, wherein the bismuth layered compound is expressed by the formula (Bi2O2)2+(Am−1BmO3m+1)2−or Bi2Am−1BmO3M+3, the symbol m in the formula is an odd number, at least part of the Bi and/or A of the bismuth layered compound is substituted by a rare earth element, and the number of moles substituted by the rare earth element is larger than 1.0 and 2.8 or less with respect to the number of moles (m+1) of the total of Bi and A.
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Ha Nguyen T
Oliff & Berridg,e PLC
TDK Corporation
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