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:
Jun. 20, 2000
Filed:
Jul. 22, 1998
Peter Hansen, Aachen, DE;
U.S. Philips Corporation, New York, NY (US);
Abstract
A capacitor including a ceramic dielectric of a dielectric ceramic composition including a doped barium-calcium-zirconium-titanate of the composition (Ba.sub.1-.alpha.-.mu.-.nu. A.sub..mu. D.sub..nu. Ca.sub..alpha.) [Ti.sub.1-x-.delta.-.mu.'-.nu.' Mn.sub..delta. A'.sub..mu.' Zr.sub.x ].sub.z O.sub.3, where A=Ag, A'=Dy, Er, Ho, Y, Yb and Ga; D=Nd, Pr, Sm, Gd; D'=Nb, Mo, 0.10.ltoreq.x.ltoreq.0.25, 0.ltoreq..mu..ltoreq.0.01, 0.ltoreq..mu.'.ltoreq.0.01, 0.ltoreq..nu..ltoreq.0.01, 0 .nu.'0.01, 0<.delta..ltoreq.0.01 and 0.995.ltoreq.z<1 and 0.ltoreq..alpha..ltoreq.0.05, and including at least two electrodes, is characterized by a high dielectric constant K and a long service life, a low loss factor, a high insulation resistance and a capacitance with a low voltage dependence. The temperature dependence of its dielectric constant K corresponds to the EIA-standard Y5V.