Glasses, compositions, thereof, articles embodying said glasses, and method of making and using the same

• US 2,655,452 A
• Filed: 05/13/1950
• Issued: 10/13/1953
• Est. Priority Date: 05/13/1950
• Status: Expired due to Term

• Current Assignee: Bowling Barnes Robert, Walter A. Fraser
• Original Assignee: Bowling Barnes Robert, Walter A. Fraser
• Inventors: BOWLING BARNES ROBERT, Fraser, Walter A.
• Application Number:
  US03/161,884
• Time in Patent Office: 1,249 Days
• US Class Current: 501/61
• CPC Class Codes: C03C 3/078 containing an oxide of a divalent metal, e.g. an oxide of zinc
• CPC Class Codes: C03C 3/089 containing boron
• CPC Class Codes: C03C 4/085 for ultraviolet absorbing glass

Claims

1. A GLASS HAVING CONTROLLED ULTRA-VIOLET ABSORPTION CHARACTERISTICS AND OF A CONTROLLED COLOR, SAID GLASS BEING MADE FROM A BATCH MIX CONSISTING ESSENTIALLY OF A SODA-POTACH-LIME-SILICA BASE HAVING INCORPORATED THEREIN FROM ABOUT .05 TO .15% OF VANADIUM OXIDE AND FROM ABOUT 0.4 TO 1.4% OF MANGANESE OXIDE, THE SODA ND POTASH CONTENT TOGETHER COMPRISING FROM ABOUT 14 TO 20%, THE LIME CONTENT NOT EXCEEDING ABOUT 11% AND THE SILICA CONTENT EMBODYING AT LEAST 60%, SAID GLASS, FOR A THICKNESS OF APPROXIMATELY 6 MILLIMETRES, PERMITTING TRANSMISSION OF LESS THAN 13% OF ULTRA-VIOLET AT 360 MILLIMICRONS IN THE SPECTRUM AND VISUAL TRANSMISSION OF APPROXIMATELY FROM 45% TO 70% AT 400 MILLIMICRONS, 56% TO 76% AT 500 MU, 50% TO 71% AT 600 MU, AND 67% TO 80% AT 700MU, WITH AN AVERAGE WHITE OF APPROXIMATELY FROM 60% TO 75%.