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. 07, 1981
Filed:
Feb. 19, 1980
Applicant:
Inventors:
David C Boyd, Corning, NY (US);
David A Thompson, Horseheads, NY (US);
Assignee:
Corning Glass Works, Corning, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ; C03C / ;
U.S. Cl.
CPC ...
106 52 ; 252478 ; 313450 ;
Abstract
This invention is directed to glasses especially suitable for use as television picture tube faceplates which exhibit linear X-ray absorption coefficients at 0.6 A of at least 35 cm.sup.-1 and very little browning from X-radiation and electron impingement thereon. The glasses are essentially free from PbO and other readily-reducible metal oxides and consist essentially, in weight percent on the oxide basis, as calculated from the batch, of: