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:
Jul. 25, 1978
Filed:
Oct. 06, 1976
Harry O Schulze, Wyalusing, PA (US);
Robert E Dodds, Towanda, PA (US);
Raymond F Herner, Towanda, PA (US);
GTE Sylvania Incorporated, Stamford, CT (US);
Abstract
Cathode ray phosphor compositions that are resistant to photodeposition slurries consist essentially of discrete particles of a phosphor material having a core of silver-activated zinc sulfide and a coating over a substantial amount of the external surfaces of a composition represented by the formula, Mg.sub.2 P.sub.2 O.sub.7 :Al.sub.4 (P.sub.2 O.sub.7).sub.3 . xSiO.sub.2 wherein the coating is at a sufficient level on the surfaces to provide a PO.sub.4 content of the composition of from about 0.05% to about 0.2% by weight and the SiO.sub.2 content sufficient to impart flowability. The coating composition is formed by a slurry process that enables a uniform and adherent coating to be deposited on the surfaces of the particles of silver-activated zinc sulfide.