Patents by Inventor Donald T. Higdon

Donald T. Higdon 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).

  • Stern planes for swath vessel
    Patent number: 5301624
    Abstract: The invention provides an improved SWATH type vessel having pontoons and a stern plane located in a position to influence water flow in the region of the tail cone portions of the pontoons and the propellers to reduce depression of the water adjacent the propellers which would otherwise cause propeller ventilation when the vessel is moving at speed.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: April 12, 1994
    Assignee: Swath Ocean Systems, Inc.
    Inventors: Nelson W. Hall, Donald T. Higdon