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:
Aug. 14, 2001
Filed:
May. 04, 1999
Cornelis R. Ronda, Aachen, DE;
Cornelis J. M. Denissen, Nuth, NL;
Volker U. Weiler, Aachen, DE;
Wilhelm A. Groen, Limbricht, NL;
Wilhelmus M. P. Van Kemenade, Eindhoven, NL;
Bennie J. De Maagt, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A low-pressure mercury vapor discharge lamp is provided with a discharge vessel and a first and a second end portion (,). The discharge vessel encloses a discharge space provided with a filling of mercury and a rare gas in a gastight manner. Each end portion (,) supports an electrode (,) arranged in the discharge space. An electrode shield (,) encompasses the electrodes (,) and is covered with a material which reacts with or forms an alloy with alkaline earth metals, which material is released by the electrode (,).