Patents by Inventor John C. Duke

John C. Duke 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).

  • Hot-rolling mill and method
    Patent number: 4478063
    Abstract: Apparatus and method for hot rolling metal between a plurality of roll stands having work rolls with nonpolar surfaces lubricated by a nonpolar lubricant.
    Type: Grant
    Filed: December 18, 1981
    Date of Patent: October 23, 1984
    Assignee: Southwire Company
    Inventor: John C. Duke