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:
Jan. 10, 1978
Filed:
Dec. 30, 1976
Applicant:
Inventors:
Charles Frederic Chenot, Towanda, PA (US);
James Evan Mathers, Ulster, PA (US);
Francis Nathan Shaffer, Towanda, PA (US);
Assignee:
GTE Sylvania Incorporated, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
250483 ; 2523 / ; 2523 / ; 423305 ; 423306 ; 428328 ; 428539 ; 428913 ;
Abstract
An oxide composition of 3:1 (Hf.sub.1-x Zr.sub.x)O.sub.2 :P.sub.2 O.sub.5, and having the empirical formula (Hf.sub.1-x Zr.sub.x).sub.3 P.sub.2 O.sub.11, where x is in the range of about 0 to 0.5, is an effective luminescent material for use in x-ray intensifying screens, and also an effective luminescent material host for Eu.sup.+2 blue emmissions. The luminescent material is obtained in essentially single crystalline large particles when prepared in the presence of a magnesium fluoride flux.