Patents by Inventor Robert N. Warwick

Robert N. Warwick 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).

  • Method of applying water soluble internal coating to hot cans
    Patent number: 4278709
    Abstract: A method of applying a water soluble epoxy resin to the interior surface of a heated beverage can of the lightweight design is disclosed. The epoxy, in a low viscosity solution, is directed against the interior surface of the can while the can is rotated. Centrifugal forces act on the epoxy solution causing a flow of the solution from the center portion of the can bottom to the difficult to access inner frustoconical surfaces.
    Type: Grant
    Filed: October 25, 1979
    Date of Patent: July 14, 1981
    Assignee: Ball Corporation
    Inventors: Richard W. Sullivan, Robert N. Warwick