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. 13, 1991
Filed:
Aug. 20, 1990
Applicant:
Inventors:
Johannes A Van Vliet, Eindhoven, NL;
Willibrordus G Verbeek, Turnhout, BE;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313 25 ; 313112 ; 313634 ; 313635 ;
Abstract
The high-pressure discharge lamp has around the discharge vessel an inner sheath of quartz glass and an outer sheath of aluminosilicate glass. An interference filter reflecting UV radiation is present between the discharge vessel and the outer sheath. The light emitted by the lamp thus satisfies the conventional standards regarding radiation for lamps operated in open luminaires.
Van Vliet, Johannes. (1991). High-pressure discharge lamp (U.S. Patent No. 5039912). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5039912
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile