Ostrolenk, Faber, Gerb & Soffen
Dielectric paste
 A dielectric paste for fabrication of multilayer ceramic substrates containing capacitive circuits. The paste comprises a dielectric powder composed of a dielectric material and a vitreous binder suspended in an organic vehicle. The dielectric material consists essentially of a composition expressed by the general formula: EQU {(Ba.sub.1-x-y-z Sr.sub.x Ca.sub.y Mg.sub.z)O}.sub.m .multidot.(Ti.sub.1-u Zr.sub.u)O.sub.2 wherein x, y, z, u and m take values within the following respective ranges: 0.ltoreq.x<0.30, 0.ltoreq.y<0.30, 0.ltoreq.z<0.05, 0.ltoreq.u<0.25, 1.ltoreq.m<1.03, and the vitreous binder consists essentially of a composition expressed by the general formula: EQU .alpha.Li.sub.2 O.multidot..beta.BaO.multidot..gamma.B.sub.2 O.sub.3 .multidot.(1-.alpha.-.beta.-.gamma.)SiO.sub.2 wherein .alpha., .beta. and .gamma. are molar ratios of the respective ingredients and take values within the following respective ranges: 0.ltoreq..alpha.<0.25, 0.1.ltoreq..beta.<0.5, 0.1<.gamma.<0.5, and 0.3 <.alpha.+.beta.+.gamma.<0.8. The content of the vitreous binder in the dielectric powder ranges from not less than 5 wt % to less than 40 wt %. 
Murata Manufacturing Co., Ltd.
C H C C C C H C C
C04B H01G C03C C04B C04B C04B H05K C03C C04B
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Hiroji Yoshiaki Yukio Hiroshi
Tani Mori Sakabe Takagi