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:
Dec. 20, 1983
Filed:
Jun. 17, 1981
Applicant:
Inventors:
Claude Fouassier, Gradignan, FR;
Bernadette Saubat, Seyssinet, FR;
Jean-Phillippe Browaeys, Paris, FR;
Patrick Dougier, Andresy, FR;
Assignee:
Rhone Poulenc Industries, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; H01J / ;
U.S. Cl.
CPC ...
313486 ; 2523 / ; 423263 ; 423277 ;
Abstract
New luminescent substances are disclosed. They have a monoclinic crystalline structure and are formed of a double borate of magnesium and rare earths having the general formula Ln.sub.1-x Tb.sub.x MgB.sub.5 O.sub.10 in which Ln represents at least one element selected from the group consisting of the lanthanides and yttrium and in which 0<x.ltoreq.1. The luminescent substances can be used in screens or tubes, for example, in low-pressure mercury vapor discharge lamps and plasma panels.