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:
Apr. 14, 1992
Filed:
Aug. 14, 1990
Leonardus U Konings, Eindhoven, NL;
Hubertus Coenen, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
An electrodeless low-pressure mercury vapour discharge lamp having a discharge vessel with a radiation transmitting envelope and a cavity, which cavity accommodates a core of magnetic material and a wire winding surrounding said core and connected to a high-frequency supply unit. The envelope is provided with a first luminescent layer and the cavity with a second luminescent layer. Of the two or more luminescent materials present the luminescent material with the greatest depreciation is present exclusively in the first luminescent layer on the envelope.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile