Patents by Inventor Paul M. Freedman

Paul M. Freedman 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).

  • Dual function laser for space laser communications
    Patent number: 3975693
    Abstract: A Nd:YAG laser operating in a dual functioning cavity with a Ba.sub.2 Na(NbO.sub.3).sub.5 frequency doubling crystal provides two frequencies of laser radiation, one frequency double the other, to provide a laser beacon beam at a wavelength of approximately 1.06 micrometers and a high data rate beam at a wavelength of approximately 0.53 micrometer.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: August 17, 1976
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: James D. Barry, Paul M. Freedman