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:
Jun. 19, 2007
Filed:
Mar. 17, 2005
Applicant:
Gregory A. Marking, Sayre, PA (US);
Inventor:
Gregory A. Marking, Sayre, PA (US);
Assignee:
Osram Sylvania Inc., Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/63 (2006.01);
U.S. Cl.
CPC ...
Abstract
An acidic solution can be used to dissolve undesirable impurity phases in UV-emitting SrBO:Eu phosphors that reduce the UV emission intensity of said phosphor. In particular, the impurity phase, SrBO:Eu, is no longer detected after treating the phosphor with an acid washing process. The phosphors after acid washing are shown to have improved UV emission intensity without greatly increasing the mean particle size.