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. 24, 2001
Filed:
Aug. 06, 1999
Applicant:
Inventors:
Maarten W. Steinmann, Eindhoven, NL;
Petronella C. M. Baken, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 5/50 ;
U.S. Cl.
CPC ...
H01J 5/50 ;
Abstract
The electric lamp comprises a lamp vessel (,) and an electric element (,). The electric element is electrically connected to the exterior via a current feed-through comprising an external current conductor (,). By covering the external current conductor with a protective coating (,) contains chromium which can react with SiO,to form low-melting phases, the lifetime of the lamp is increased significantly.