Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2008-06-03
2008-06-03
Kiliman, Leszek (Department: 1794)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S403000, C428S404000, C428S405000, C428S406000
Reexamination Certificate
active
07381464
ABSTRACT:
An object of the invention is to provide a multilayer ceramic capacitor having high dielectric constant, good temperature characteristic, and an improved IR temperature dependency.According to the present invention, a capacitor device body10, wherein dielectric layers2comprising dielectric ceramic composition and internal electrode layers3are alternately laminated, characterized in that said dielectric ceramic composition comprises a plural number of crystal particles2awherein said crystal particles2aform Ca dispersing area25awherein at least said Ca is dispersed from the surface to inside of crystal particles, and when considering crystal particles2ahaving an average particle diameter of D50, an average depth T of said Ca dispersing area is controlled within a range of 10 to 30% with respect to the average particle diameter of D50, is provided.
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Ito Kazushige
Sato Akira
Kiliman Leszek
Oliff & Berridg,e PLC
TDK Corporation
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