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. 29, 2007
Filed:
Aug. 03, 2001
Helmut Sommariva, Graz, AT;
Christian Hoffmann, Deutschlandsberg, AT;
Matiaz Valant, Ljubljana, SI;
Danilo Suvorov, Ljubljana, SI;
Helmut Sommariva, Graz, AT;
Christian Hoffmann, Deutschlandsberg, AT;
Matiaz Valant, Ljubljana, SI;
Danilo Suvorov, Ljubljana, SI;
EPCOS AG, Munich, DE;
Abstract
A capacitor includes at least two pairs of opposing electrode layers and an intermediate dielectric layer. The intermediate dielectric layer includes a ceramic material that contains at least two different components existing in separate phases. The at least two different components have a perovskite structure that contains silver in A-positions and niobium and tantalum in B-positions. A composition of a first component and a composition of a second component are such that temperature coefficients of respective permittivities Tkεand Tkεhave different signs within a temperature range.