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. 27, 1999
Filed:
May. 31, 1996
David R Woodward, Morgantown, WV (US);
Steven D McGuire, Morgantown, WV (US);
Wim Hellebrekers, Hulst, NL;
Philips Electronics North America Corporation, New York, NY (US);
Abstract
A low pressure mercury vapor fluorescent lamp includes a lamp vessel having a mercury protective coating on the inner surface of the lamp envelope and a halophosphate phosphor layer. The lamp has a discharge sustaining filling including mercury and a rare gas. The level of mercury is selected such that the lamp has a standard average lamp life of about 20,000 hours while passing the Environmental Protection Agency's Toxicity Characteristic Leachate Procedure (TCLP) test and the State of California's Waste Extraction Test (WET).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile