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:
Oct. 14, 2008
Filed:
Jun. 07, 2005
Applicants:
Gregory A. Marking, Sayre, PA (US);
Thomas M. Snyder, Laceyville, PA (US);
Inventors:
Gregory A. Marking, Sayre, PA (US);
Thomas M. Snyder, Laceyville, PA (US);
Assignee:
Osram Sylvania Inc., Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/64 (2006.01); C09K 11/55 (2006.01); H01J 1/62 (2006.01); H01J 11/02 (2006.01); H01J 61/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
The UVC emission of a Sr(Al,Mg)O:Pr is improved by providing an excess of magnesium relative to the molar amount praseodymium In particular, the UVC-emitting phosphor has a composition represented by the formula SrPrAlMgOwherein y>x. The phosphor is excited by vacuum ultraviolet radiation and may be used to create a mercury-free germicidal lamp.