Dielectric ceramic composition and multilayer ceramic capacitor

Details Dielectric ceramic composition and multilayer ceramic capacitor Dielectric ceramic composition and multilayer ceramic capacitor

2007-01-09

2007-01-09

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

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

C501S139000, C361S321400

Reexamination Certificate

active

11494446

ABSTRACT:
A dielectric ceramic composition that includes a main component expressed as 100BamTiO3+xCuO+aROn+bMnO+cMgO (wherein coefficients 100, x, a, b, and c represent molar ratios; m represents the ratio of Ba to Ti (Ba/Ti); R represents at least one metal element selected from Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; and n represents a positive number required to maintain electroneutrality and is determined by the valence number of R), wherein m, x, a, b, and c meet the following relationships: 0.990≦m≦1.050; 0.1≦x≦5.0; 9.0≦a≦20.0; 0.5≦b≦3.5; and 0<c≦4.0, and the dielectric ceramic composition contains 0.8 to 5.0 parts by weight of a sintering additive with respect to 100 parts by weight of the main component.

REFERENCES:
patent: 6620754 (2003-09-01), Mizuno et al.
patent: 6620755 (2003-09-01), Saito et al.
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patent: 11-322416 (1999-11-01), None
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patent: 2001-143955 (2001-05-01), None
patent: 2002-050536 (2002-02-01), None
PCT/JP2005/001919 Copy of International Search Report, Mar. 23, 2005.
PCT/JP2005/001919 Copy of Written Opinion, Mar. 23, 2005.

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