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:
Jan. 03, 2012
Filed:
Apr. 15, 2005
Applicants:
Gerhard Hebbinghaus, Jülich, DE;
Jozef Merx, Vaals, NL;
Inventors:
Gerhard Hebbinghaus, Jülich, DE;
Jozef Merx, Vaals, NL;
Assignee:
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 9/14 (2006.01); H01J 17/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for the thermal treatment of tungsten electrodes having a fibrous mocrostructure and being free from thorium oxide for high-pressure discharge lamps, to such a tungsten electrode free from thorium oxide, to a method of manufacturing a high-pressure gas discharge lamp with at least one such tungsten electrode free from thorium oxide, to a high-pressure gas discharge lamp with at least one such tungsten electrode free from thorium oxide, and to a lighting unit with at least one such high-pressure gas discharge lamp.