Patents by Inventor David A. Dutt

David A. Dutt 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).

  • Patent number: 5422745
    Abstract: A fast process for photowriting a permanent, high efficiency optical grating comprises darkening glass by irradiation and photobleaching the darkened glass by exposing the glass to interfering writing laser beams, thereby forming the grating.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: June 6, 1995
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Glen M. Williams, David A. Dutt, Jacqueline A. Ruller, Edward J. Friebele