Patents by Inventor John L. Leingang

John L. Leingang 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).

  • Two-stage hypersonic ramjet
    Patent number: 4338783
    Abstract: A two-stage ramjet engine including an aft end, ejectable, boost stage-combustor/nozzle assembly for initially accelerating from low-to-mid-supersonic launching speeds to high supersonic speeds, and mounted in a tandem arrangement immediately aft of a separate, forward end-cruise stage-combustor/nozzle assembly positioned directly behind an inlet-diffuser section for subsequently further accelerating from high supersonic to hypersonic speeds after ejecting the entire boost stage.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: July 13, 1982
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: John L. Leingang