Glass for embedding zinc sulfide phosphors

• US 2,681,861 A
• Filed: 12/12/1950
• Issued: 06/22/1954
• Est. Priority Date: 12/12/1950
• Status: Expired due to Term

• Current Assignee: Walter J. Hushley
• Original Assignee: Walter J. Hushley
• Inventors: Hushley, Walter J.
• Application Number:
  US03/200,367
• Time in Patent Office: 1,288 Days
• US Class Current: 501/77
• CPC Class Codes: C03C 3/064 containing boron
• CPC Class Codes: G21K 4/00 Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens photographic processes using X-ray intensifiers G03C5/17; discharge tubes comprising luminescent screens H01J1/62; cathode ray tubes for X-ray conversion with optical output H01J31/50

Claims

1. A GLASS WHICH IS OF A FIRED REACTION PRODUCT OF A MIXTURE WHICH CONSISTS ESSENTIALLY OF 55% TO 80% B2O3, 10% TO 25% SIO2, 2% TO 12% MATERIAL DRAWN FROM THE GROUP CONSISTING OF AL2O3, AND MGO, THE MGO BEING NOT OVER 6% OF THE COMBINED MIXTURE, 5% TO 15% OF MATERIAL DRAWN FROM THE GROUP WHICH CONSISTS OF NA2O AND NAF AND 0% TO 25% OF GEO2, ALL SAID PERCENTAGES BEING BY WEIGHT.