Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Involving specified composition of heating atmosphere – other...
Reexamination Certificate
2006-06-20
2006-06-20
Griffin, Steven P. (Department: 1731)
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Involving specified composition of heating atmosphere, other...
C264S675000, C264S674000, C156S089120, C156S089180
Reexamination Certificate
active
07063813
ABSTRACT:
This invention provides a stacked ceramic body that prevents reaction between components of dielectric layers and components of electrode layers of an unsintered stacked body during sintering and in which both components do not easily form a liquid phase, and a production method of such a stacked ceramic body. A print portion13is formed on a green sheet1, 12containing lead by use of an electrode paste consisting of copper oxide as its main component. A desired number of print sheets10are stacked to give an unsintered stacked body15. Degreasing is conducted in an atmosphere to degrease organic components. The print portion13is subjected to reducing treatment in a reducing atmosphere containing hydrogen and is converted to a print portion13containing copper as its main component. The unsintered stacked body15is sintered in a reducing atmosphere. Dielectric layers containing lead and electrode layers for applying a voltage to the dielectric layers are alternately stacked, and an oxidation portion containing copper is formed in the proximity of a surface of the electrode layer. A thickness of the oxidation portion in a stacking direction is 0.5 to 2 μm and a copper content in the oxidation portion is 1 to 30 wt %.
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Fujii Akira
Nagaya Toshiatsu
Shindo Hitoshi
Sumiya Atsuhiro
Yamamoto Takashi
Denso Corporation
Griffin Steven P.
Lyles-Irving Carmen
Nixons & Vanderhye P.C.
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