Patents by Inventor John Vassa (Suratano Thienphropa)

John Vassa (Suratano Thienphropa) 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).

  • VTOL aircraft
    Patent number: 5421538
    Abstract: A vertical takeoff and landing heavier-than-air aircraft that includes a gyroscopic airfoil in the airstream of a ducted fan to cause vertical lift to the aircraft. The gyroscopic foil is both rotatably and pivotally attached to the aircraft such that it can be titled to provide directional control of the aircraft and, in at least one embodiment, has an adjustable airfoil forming part of the gyroscopic device such that the lift can be varied.
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: June 6, 1995
    Inventor: John Vassa (Suratano Thienphropa)