Patents by Inventor Walter R. Sooy

Walter R. Sooy 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).

  • Laser secure communications system
    Patent number: 4209689
    Abstract: A laser secure communications system is disclosed. The system utilizes a long laser cavity, the end reflecting members of which may be located many kilometers apart. One or more high gain laser amplifiers optically aligned within the long laser cavity provide the optical carrier energy. Laser oscillation only occurs if the remotely located end reflectors are optically aligned and if the laser gain is sufficient to overcome the round trip transmission loss. The optical carrier thus established is modulated and detected at either end of the laser cavity.
    Type: Grant
    Filed: June 4, 1969
    Date of Patent: June 24, 1980
    Assignee: Hughes Aircraft Company
    Inventors: Gary J. Linford, Eugene R. Peressini, Walter R. Sooy