Patents by Inventor William F. Donaldson

William F. Donaldson 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).

  • Optical parametric oscillator using urea crystal
    Patent number: 4639923
    Abstract: A new optical parametric oscillator which employs a urea crystal is disclosed. The organic crystal makes the oscillator broadly tunable, so that the entire spectral range from the ultraviolet to the near infrared is accessible.The urea optical parametric oscillator is angle tunable, and has a high efficiency.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: January 27, 1987
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Chung L. Tang, William F. Donaldson