Patents Assigned to Duraglass Research & Development Corporation
  • Process of strengthening glass bottles and the like
    Patent number: 4039310
    Abstract: A method of strengthening glass comprising heating the glass to a temperature between approximately 700.degree. F. and the decomposition temperature of a selected fatty acid, and applying said fatty acid to the surface of the glass. The fatty acid, in regard to the carboxyl group, employed in the disclosed process is not reacted with any other chemical; it is chemisorbed on the surface of the glass for strengthening the microcrack structure on said surface.
    Type: Grant
    Filed: January 12, 1976
    Date of Patent: August 2, 1977
    Assignee: Duraglass Research & Development Corporation
    Inventors: Nelson Eugene Sipe, Noble Ida