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:
Dec. 06, 2005
Filed:
Sep. 07, 2001
Robert Peter Scholl, Roetgen, DE;
Rainer Hilbig, Aachen, DE;
Achim Koerber, Kerkrade, NL;
Johannes Baier, Wuerselen, DE;
Robert Peter Scholl, Roetgen, DE;
Rainer Hilbig, Aachen, DE;
Achim Koerber, Kerkrade, NL;
Johannes Baier, Wuerselen, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A low-pressure gas discharge lamp provided with a gas discharge vessel containing a mercury-free gas filling with an indium compound in an amount of about 1 to 10 microgram per cubic centimeter and a partial pressure in the range from 1.0 to 30 micro bar, and a buffer gas for emitting radiation in a continuous spectrum in the visible and near UVA regions of the electromagnetic spectrum, which low-pressure gas discharge lamp is also provided with electrodes and a ballast for controlling the ignition and operation of the lamp.