Dielectric ceramic composition and monolithic ceramic capacitor using the same
CA 2212130 C · Owner: Tanaka, Hidehiko · Inventors: Mizuno, Shinobu; Tanaka, Hidehiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dielectric ceramic composition comprising (1) 100 parts by weight of a main component represented by compositional formula:, {BaO}m.TiO2+.alpha.Re2O3+.beta.MnO wherein Re2O3 is at least one of Eu2O3 Gd2O3, Tb2O3, Dy2O3, Ho2O3, Er2O3, Tm2O3 and Yb2O3; 0.0005~.alpha.~0.027; 0.002~.beta.~0.054; .beta./.alpha.~5; and 1.000<m~1.035, and, as a secondary component (2) 0.2 to 3.0 parts by weight, of an SiO2-TiO2-M1-based oxide component (wherein M1 is at least one of BaO, CaO, SrO, MgO, ZnO, and MnO) or an Li2O-(Si,Ti)O2-M2-based oxide component (wherein M2 is at least one of Al2O3 and ZrO2) and a monolithic ceramic capacitor using the composition are disclosed. The monolithic ceramic capacitor …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 31, 1997 and granted October 17, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 31, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2019.
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