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:
Oct. 05, 1976
Filed:
Jun. 02, 1975
John W Gilliland, Raleigh, NC (US);
Corning Glass Works, Corning, NY (US);
Abstract
A process for making BaSi.sub.2 O.sub.5 :Pb having a high energy conversion efficiency of ultraviolet emission under electron bombardment. The process includes mixing BaCO.sub.3, BaF.sub.2, Pb(NO.sub.3).sub.2 and SiO.sub.2 in a form having extremely small particle size so as to facilitate complete dispersal of the SiO.sub.2 in the mixture. Pb(NO.sub.3).sub.2, a soluble salt, is mixed with the other ingredients in a slurry of alcohol. The soluble salt dissolves in the alcohol to obtain complete dispersal of lead throughout the mixture. After mixing the other ingredients and before firing, H.sub.3 BO.sub.3 is added. The product BaSi.sub.2 O.sub.5 :Pb is used as a high efficiency phosphor in combination with photochromic glass in an information display system.