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. 19, 2008
Filed:
Apr. 02, 2004
Johannes Baier, Würselen, DE;
Rainer Hilbig, Aachen, DE;
Achim Gerhard Rolf Körber, Kerkrade, NL;
Robert Peter Scholl, Roetgen, DE;
Matthias Born, Geldern, DE;
Johannes Baier, Würselen, DE;
Rainer Hilbig, Aachen, DE;
Achim Gerhard Rolf Körber, Kerkrade, NL;
Robert Peter Scholl, Roetgen, DE;
Matthias Born, Geldern, DE;
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
A high-pressure metal halide discharge lamp which comprises, as filling, only zinc, a halogen and a noble gas. In order to improve the color rendering index, a calcium halide may be added to the lamp filling. The coupling-in of energy preferably takes place without electrodes in the radio-frequency range or in the microwave range, but may also be carried out by means of metal electrodes.