Patents by Inventor by Florence M. Hutchinson, exectrix

by Florence M. Hutchinson, exectrix 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).

  • Azeotropes of 1,2-dichloro-1,1,2-trifluoroethane
    Patent number: 4062795
    Abstract: Constant boiling binary admixtures are formed by 1,2-dichloro-1,1,2-trifluoroethane with trichlorofluoromethane, with diethyl ether, and with dichloromethane. A constant boiling ternary admixture is formed by 1,2-dichloro-1,1,2-trifluoroethane, diethyl ether, and 1,2-dibromo-1,1,2,2-tetrafluoroethane.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: December 13, 1977
    Assignee: Phillips Petroleum Company
    Inventors: William Milton Hutchinson, deceased, by Florence M. Hutchinson, exectrix