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:
Feb. 01, 2005
Filed:
Nov. 15, 2000
Chen-wen Fan, Sayre, PA (US);
Kenneth T. Reilly, Towanda, PA (US);
Richard G. W. Gingerich, Towanda, PA (US);
Dale E. Benjamin, Athens, PA (US);
Chen-Wen Fan, Sayre, PA (US);
Kenneth T. Reilly, Towanda, PA (US);
Richard G. W. Gingerich, Towanda, PA (US);
Dale E. Benjamin, Athens, PA (US);
Osram Sylvania Inc., Danvers, MA (US);
Abstract
A process for making an electroluminescent phosphor having a given emission spectra A, comprises the steps of manufacturing a beginning electroluminescent phosphor having an emission spectra B, different than A. A coating is applied to the phosphor having the emission spectra B to increase the resistance of the phosphor to the deleterious effects of moisture and change the emission spectra of the phosphor to emission spectra A. The application of the coating includes the steps of reacting a coating precursor with a mixture of oxygen and ozone.