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:
Apr. 10, 1984
Filed:
Mar. 10, 1983
Applicant:
Inventors:
Malcolm Higton, London, GB;
Aron Vecht, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; H05B / ;
U.S. Cl.
CPC ...
313503 ; 2523 / ; 2523 / ; 313506 ; 313509 ; 427 12 ; 427 64 ; 427 66 ; 427157 ; 445-5 ; 445 26 ;
Abstract
This invention provides phosphors for use in electroluminescent devices. Each phosphor contains a dopant, selected from the group consisting of europium, erbium, and terbium and at least one of the sulphides selected from the group consisting of strontium and calcium sulphide.