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:
Jul. 05, 2011
Filed:
Dec. 17, 2007
Applicants:
Rainer Koger, Berlin, DE;
Markus Kolodziejczyk, Berlin, DE;
Wolfgang Spielmann, Ehrwald, AT;
Inventors:
Assignee:
OSRAM Gesellschaft mit beschränkter Haftung, München, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 16/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a high-pressure mercury discharge lamp for DC operation at a nominal wattage of more than 1.5 kW. Said high-pressure mercury discharge lamp comprises an anode, at least some areas of which are made of a material containing at least some tungsten, said material having a grain number of more than 200 grains per mmand a density of more than 19.05 g/cm.