Patents by Inventor Charles Billiu

Charles Billiu 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).

  • Vertical take-off and landing aircraft
    Publication number: 20040164203
    Abstract: An impeller (16) driven ring wing (12) aircraft (10) whose lifting forces are augmented by the release of jets of air (113) from Coanda slots (42) disposed around the exterior edge. (32) of the ring wing (12). These jets of air (113) entrain the air passing by the ring wing (12) downwardly to act as thrust to lift the aircraft (10).
    Type: Application
    Filed: February 21, 2003
    Publication date: August 26, 2004
    Inventor: Charles Billiu