Patents by Inventor David A. Didion

David A. Didion has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Refrigerant mixture of trichlorofluoromethane and dichlorohexafluoropropane
    Patent number: 4687588
    Abstract: A refrigerant mixture consisting essentially of trichlorofluoromethane (R-11) and dichlorohexafluoropropane (R-216) which has a higher saturated vapor density than that of pure R-11 and which exhibits an azeotrope at approximately 74% by weight of R-11 and 26% by weight of R-216.
    Type: Grant
    Filed: August 5, 1986
    Date of Patent: August 18, 1987
    Assignee: Calmac Manufacturing Corporation
    Inventors: Mark O. McLinden, David A. Didion, Calvin D. MacCracken