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. 03, 2007
Filed:
May. 27, 2003
Ingrid Jozef Maria Snijkers-hendrickx, Eindhoven, NL;
Henricus Albertus Maria Van Hal, Eindhoven, NL;
Wilhelmus Cornelis Keur, Eindhoven, NL;
Ingrid Jozef Maria Snijkers-Hendrickx, Eindhoven, NL;
Henricus Albertus Maria Van Hal, Eindhoven, NL;
Wilhelmus Cornelis Keur, Eindhoven, NL;
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
A low-pressure mercury vapor discharge lamp is provided with a light-transmitting discharge vessel, enclosing, in a gastight manner, a discharge space provided with a filling of mercury and a rare gas. The discharge vessel comprises means for maintaining a discharge in the discharge space. At least a portion of an inner wall of the discharge vessel is provided with a translucent layer which-according to the invention has a thickness in the range from 1 to 50 μm and comprises an alkaline-earth-borate.