Patents by Inventor Duncan A. Richards

Duncan A. Richards 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).

  • Highly oriented metal fluoride thin film waveguide articles on a substrate
    Patent number: 5492776
    Abstract: A highly oriented thin film of specific barium fluoride materials deposited at low temperatures are useful as Upconversion waveguides.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: February 20, 1996
    Assignee: Eastman Kodak Company
    Inventors: Gustavo R. Paz-Pujalt, Liang-Sun Hung, James M. Chwalek, Anna L. Hrycin, Dilip K. Chatterjee, Duncan A. Richards