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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
First Claim
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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.

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