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. 09, 2006
Filed:
Aug. 02, 2004
Ronald Mikkenie, Maastricht, NL;
Gerardus Christiaan Marie Dortant, Roermond, NL;
Knuth Albertsen, Goch, DE;
Heinz Georg Kohler, Aachen, DE;
Tilman Schlenker, Aachen, DE;
Ronald Mikkenie, Maastricht, NL;
Gerardus Christiaan Marie Dortant, Roermond, NL;
Knuth Albertsen, Goch, DE;
Heinz Georg Kohler, Aachen, DE;
Tilman Schlenker, Aachen, DE;
Koninkiljke Philips Electronics N.V., Eindhoven, NL;
Abstract
The dielectric composition contains a mixture of a ceramic composition containing BaRETiO, wherein RE represents a rare earth element, with 0.05≦a≦0.25, 0.525≦b≦0.70, 0.85≦c≦1.0, and 2a+3b+4c=6, and free from lead and bismuth, a glass composition, and a metal oxide. The glass composition preferably contains ZnO or MgO, SiO, and at least 10% by weight of LiO or TiO. Preferably, the alkaline earth metal oxide is MgO. By preference, the glass composition essentially consists of 50–80% weight of SiO, 5–25% weight of MgO, and optionally another alkaline earth metal oxide, and 10–25% by weight of LiO, and is substantially free from boron. The dielectric composition can be sintered in the presence of Cu electrodes at a temperature below the melting point of Cu so as to manufacture an electronic device such as a ceramic multilayer element. After sintering, the dielectric composition has a relative dielectric constant of at least 55.