Patents by Inventor Stephen Daniel Upham

Stephen Daniel Upham 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).

  • Stabilizing fin for a water planing device
    Patent number: 9248892
    Abstract: A stabilizing fin that includes a hollow tubular element that has an upper surface for attachment to the bottom surface of a water planing device. The tubular element has an open front end and open rear end. During use thereof the hollow tubular element provides lateral stability and vertical stability while allowing for increased turning ability for enhanced control by a user. The water planing device may be, for example, a surfboard, a wind surfing board, a kite board, a water ski, a wake board or a boat.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: February 2, 2016
    Inventors: Todd Young, Stephen Daniel Upham