The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 11, 1995
Filed:
Jul. 21, 1994
Masamitsu Shibata, Nagaokakyo, JP;
Yukio Hamaji, Nagaokakyo, JP;
Abstract
The present invention is directed to a dielectric ceramic composition composed of, 97.5 to 99.95 wt. % of main component represented by, {100-(a+b+c+d)} (Ba.sub.100-x Pb.sub.x) TiO.sub.3 +aZnO+bBi.sub.2 O.sub.3 +cNb.sub.2 O.sub.5 +dRe.sub.2 O.sub.3 (0.5.ltoreq.a.ltoreq.4.5, 0.5.ltoreq.b.ltoreq.4.5, 0.5.ltoreq.c.ltoreq.4.5, 0.5.ltoreq.d.ltoreq.5.5 and 0<x.ltoreq.6.0, and 0.05 to 2.5 wt. % of first by-component consisting of glass whose main component is SiO.sub.2. Also, the present invention is directed to a dielectric ceramic composition composed of main component represented by, {100-(a+b+c+d+e)} BaTiO.sub.3 +aZnO+bBi.sub.2 O.sub.3 +cMeO.sub.2 +dNb.sub.2 O.sub.5 +eRe.sub.2 O.sub.3 (0.5.ltoreq.a.ltoreq.4.5, 2.0.ltoreq.b.ltoreq.6.0, 0.5.ltoreq.c.ltoreq.6.5, 0.5.ltoreq.d.ltoreq.4.5 and 0.5.ltoreq.e.ltoreq.5.5), and first by-component. Furthermore, the present invention is directed to a dielectric ceramic composition composed of main component represented by, (100-(a+b+c+d+e+f)} BaTiO.sub.3 +aZnO +bBi.sub.2 O.sub.3+cNb.sub.2 O.sub.5 +dMaO+eMbO.sub.2 +fRe.sub. 2 O.sub.3 (0.5.ltoreq.a.ltoreq.4.5, 2.0.ltoreq.b.ltoreq.6.0, 0.5.ltoreq.c.ltoreq.4.5, 0<d.ltoreq.4.0, 6.5.ltoreq.e.ltoreq.10.0 and 0.5.ltoreq.f.ltoreq.5.5) and first by-component. The above-mentioned three dielectric ceramic compositions may also be composed of, 97.0 to 99.94 wt. % of main component, 0.05 to 2.5 wt. % of first by-component, and 0.01 to 0.5 wt. % of second by-component consisting of at least one kind of oxides of Cr, Mn, Fe, Co and Ni.