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:
Sep. 14, 1993
Filed:
Oct. 21, 1991
Applicant:
Inventors:
Kenneth T Reilly, Towanda, PA (US);
Andrew G Sigai, Lexington, MA (US);
Assignee:
GTE Products Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
428690 ; 428917 ; 428403 ; 2523 / ; 2504831 ; 2504842 ; 313503 ; 313506 ;
Abstract
A coated electroluminescent phosphor which can be copper activated zinc sulfide, copper and manganese activated zinc sulfide or copper activated zinc sulfide-selenide is disclosed having a particle size of from less than about 5 micrometers in diameter to about 80 micrometers in diameter. The coating is from about 100 to about 400 angstroms in thickness, and consists essentially of aluminum oxide and is resistant to moisture and relatively chemically inert.