Low temperature sinterable dielectric ceramic composition,...

Details Low temperature sinterable dielectric ceramic composition,... Low temperature sinterable dielectric ceramic composition,...

2005-08-30

2005-08-30

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

C361S321400

Reexamination Certificate

active

06936558

ABSTRACT:
A low temperature sinterable dielectric ceramic composition, as well as a multilayer ceramic chip capacitor and a ceramic electronic device. The dielectric ceramic composition comprises a major composition represented by the general formula: x{αBaO, (1−α)SrO}-y{SiO2}-z{(1−β)ZrO2, β Al2O3} (wherein x, y and z are weight percentages; x+y+z=100, 55≦x≦75, 10≦y≦35, and 5≦z≦30, α and β are moles; 0.4≦α≦0.8, and 0.01≦β≦0.07) and 2 to 10 parts by weight of a Zn—B-silicate glass composition, per 100 parts by weight of the major composition. The multilayer ceramic chip capacitor and a multilayer ceramic circuit board for the electronic device comprise a plurality of dielectric ceramic layers, internal electrodes arrayed inside the dielectric ceramic layers, and outer electrodes electrically connected to the internal electrodes, characterized in that the dielectric ceramic layer is a sintered body of the dielectric ceramic composition mentioned above, and the internal electrode is made of a conductive base metal material.

REFERENCES:
patent: 4816429 (1989-03-01), Nishioka et al.
patent: 4988651 (1991-01-01), Nishioka et al.
patent: 5756408 (1998-05-01), Terashi et al.
patent: 2000-143332 (2000-05-01), None
patent: 2000-327428 (2000-11-01), None
Abstract—Japanese Patent No. JP5190020, Published Jul. 30, 2003.
Abstract—Japanese Patent No. JP1102806, Published Apr. 20, 1989.

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