Patents by Inventor John T. Trauger

John T. Trauger 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).

  • Alkali metal for ultraviolet band-pass filter
    Patent number: 5237447
    Abstract: An alkali metal filter having a layer of metallic bismuth deposited onto the alkali metal is provided. The metallic bismuth acts to stabilize the surface of the alkali metal to prevent substantial surface migration from occurring on the alkali metal, which may degrade optical characteristics of the filter. To this end, a layer of metallic bismuth is deposited by vapor deposition over the alkali metal to a depth of approximately 5 to 10 .ANG.. A complete alkali metal filter is described along with a method for fabricating the alkali metal filter.
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: August 17, 1993
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Nick Mardesich, George A. Fraschetti, Timothy A. McCann, Sherwood D. Mayall, Donald E. Dunn, John T. Trauger