Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...
Reexamination Certificate
2009-08-13
2010-06-01
Group, Karl E (Department: 1793)
Compositions: ceramic
Ceramic compositions
Titanate, zirconate, stannate, niobate, or tantalate or...
C361S321400
Reexamination Certificate
active
07727921
ABSTRACT:
A dielectric ceramic composition that is used for a monolithic ceramic capacitor, can be cofired with internal electrodes mainly composed of Ni at a temperature of 1200° C. or less, and has a high resistivity is provided. The dielectric ceramic composition is mainly composed of a tungsten bronze type complex oxide having a composition formula of (K1-xNax)Sr2Nb5O15(wherein 0≦x<0.2) and further contains, as accessory components, 0.05 to 20 molar parts of R (wherein R is at least one selected from the group consisting of Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) and 0.05 to 40 molar parts of M (wherein M is at least one selected from the group consisting of Mn, V, Li, Si, Ni, Cr, Co, Fe, Zn, Mg, and Zr) per 100 molar parts of the main component.
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Dickstein & Shapiro LLP
Group Karl E
Murata Manufacturing Co. Ltd.
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