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. 11, 2005
Filed:
Feb. 25, 2003
William M. Yen, Athens, GA (US);
Dongdong Jia, Troy, NY (US);
Weiyi Jia, Mayaguez, PR (US);
Xiao-jun Wang, Statesboro, GA (US);
William M. Yen, Athens, GA (US);
Dongdong Jia, Troy, NY (US);
Weiyi Jia, Mayaguez, PR (US);
Xiao-jun Wang, Statesboro, GA (US);
University of Georgia Research Foundation, Inc., Athens, GA (US);
Abstract
The invention provides long-persistent phosphors, methods for their manufacture and phosphorescent articles. The invention also provides a method for generating a long-persistent phosphorescence at a selected color. The phosphors of the invention may be alkaline earth aluminates, alkaline earth silicates, and alkaline earth aluminosilicates. The phosphors include those activated by cerium. The phosphors also include those in which persistent energy transfer occurs from a donor ion to an acceptor ion, producing persistent emission largely characteristic of the acceptor ion.