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. 09, 1998
Filed:
Aug. 01, 1997
Applicant:
Inventor:
Vaddi Butchi Reddy, Sayre, PA (US);
Assignee:
Osram Sylvania Inc., Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
2523 / ; 2523 / ;
Abstract
A monoclinic M' yttrium tantalate x-ray phosphor containing a dopant selected from silicon or germanium to increase phosphor particle size and/or brightness. The phosphor is made by adding a silicon- or germanium-containing compound and a flux to the mixture of raw materials formulated to make the phosphor and then firing the doped mixture at a temperature and for a time sufficient to make the phosphor.