Patents by Inventor David Hilborn

David Hilborn 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).

  • Hockey stick
    Patent number: 6019691
    Abstract: The blade of a hockey stick is formed with downwardly angled grooves in its major faces for imparting a spinning motion to the puck. Each groove is angled downwardly and outwardly toward the toe area of the blade, so that the edges of the grooves spin the hockey puck into pressure contact with the ice (or ground) surface.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: February 1, 2000
    Inventor: David Hilborn