Patents by Inventor Robert C. Ohlmann

Robert C. Ohlmann 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).

  • Method of producing a buried long period grating
    Patent number: 4476161
    Abstract: A method of producing a buried long period grating which is substantially unaffected by material stability, high tolerance requirements, stringent machining requirements, and heat transfer. The method takes a plurality of rectangular-shaped pieces of dielectric material and by a series of appropriate cuts, coatings and attachments produces an effective buried long period grating.
    Type: Grant
    Filed: July 29, 1983
    Date of Patent: October 9, 1984
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Richard H. Pohle, Robert C. Ohlmann