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:
May. 15, 2012
Filed:
Dec. 21, 2009
Sam Joseph Camardello, Saratoga Springs, NY (US);
Holly Ann Comanzo, Niskayuna, NY (US);
Alok Mani Srivastava, Niskayuna, NY (US);
Sam Joseph Camardello, Saratoga Springs, NY (US);
Holly Ann Comanzo, Niskayuna, NY (US);
Alok Mani Srivastava, Niskayuna, NY (US);
Abstract
A blue or yellow persistent phosphor composition is provided, along with methods for making and using the composition. In one embodiment, the phosphor comprises a formula of A-BC(ON):Eu,-RE, wherein, A may be Sr, Ca, Ba, or a combination thereof; B may be Mg, Zn, Co, or a combination thereof; C may be Si, Ge, or a combination thereof; a is between 1 and 2.0; b is between 0.0005 and 0.1; c is between 0.0005 and 0.1; d is between 0.9 and 1; e is between 2 and 2.1; f is between 6 and 7; g is between 0.001 and 0.1; and RE is Dy, Nd, Er, Ho, Tm, Yb or a combination thereof. Embodiments use Sr, Mg and Si to produce blue phosphors or Ca, Mg and Si to produce yellow phosphors. In other embodiments, methods for making and applications for using, including uses in toys, emergency equipment, clothing, and instrument panels, are provided.