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:
Apr. 21, 2009
Filed:
Jun. 28, 2004
Govert Nieuwland, Eindhoven, NL;
Johannes Franciscus Maria Cillessen, Eindhoven, NL;
Henricus Albertus Maria Van Hal, Eindhoven, NL;
Govert Nieuwland, Eindhoven, NL;
Johannes Franciscus Maria Cillessen, Eindhoven, NL;
Henricus Albertus Maria Van Hal, Eindhoven, NL;
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
An electric discharge lamp comprising: a light-transmissive ceramic discharge vessel (); a first and a second current conductor () entering the discharge vessel ()and each supporting an electrode () in the discharge vessel (); an ionizable filling comprising a rare gas and a metal halide in the discharge vessel (); at least the first current conductor () within the discharge vessel () being halide-resistant, characterized in that the first current conductor () at least substantially comprises a material with an at least substantially isotropic coefficient of thermal expansion, said material preferably being chosen from the group of YSiX, wherein Y is chosen from Mo, W and Ta and X is B, Al, N or C with 4<p:5 5 and 0<q<1. More preferably, said material is of the composition Mo6(Si, Moi-X)4(C, Si1-)6 with 0.10:5 x<0.55 and 0.15<y:S 0.40.