Patents by Inventor Greg S. Ketterman

Greg S. Ketterman 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).

  • Foil suspended watercraft
    Patent number: 5168824
    Abstract: A hydrofoil suspension system which maintains a watercraft in a desired attitude relative the water's surface. Pitching and rolling forces are automatically controlled while the system is resistant to destabilization by localized surface irregularities.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: December 8, 1992
    Inventor: Greg S. Ketterman