Patents by Inventor Spyros K. Petropoulos

Spyros K. Petropoulos 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).

  • Airborne infrared transmissometer
    Patent number: H1066
    Abstract: The Airborne Infrared Transmissometer measures the infrared transmission between a test target aircraft and a detection system. A transmitter is attached to an aircraft and emits a calibrated infrared beam. A ground-based, shipborne, or airborne receiver measures the transmitted signals in the exact same path between the target aircraft and the detection system. Data recording equipment can be attached to both the transmitter and receiver to measure the associated outputs.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: June 2, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Spyros K. Petropoulos, Abraham Hirschman, deceased, William J. Hirschman, co-executor, Samuel Hirschman, co-executor