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:
May. 18, 1999
Filed:
Nov. 12, 1997
Hiroaki Matoba, Moriyama, JP;
Abstract
Disclosed is a dielectric ceramic composition having a high dielectric constant, which can be fired along with silver and silver alloys at temperatures not higher than 1000.degree. C. To a two-component dielectric ceramic composition comprising a solid solution that consists essentially of lead nickel niobate Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 and lead titanate PbTiO.sub.3, added is at least one additive selected from the group consisting of the compounds Pb.sub.3 O.sub.4, CuO and WO.sub.3 capable of forming a composition of a chemical formula Pb(Cu.sub.1/2 W.sub.1/2)O.sub.3, and manganese oxide. The additives have the ability to promote the sintering of the two-component composition and to lower the firing temperature for the composition.