Patents by Inventor Rudy E. M. Geens

Rudy E. M. Geens 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).

  • Vapor discharge device with electron emissive material
    Patent number: 5111108
    Abstract: An emissive material for use in a vapor discharge device including reacted Ba.sub.x Sr.sub.1-x Y.sub.2 O.sub.4 wherein X satisfies the following: 1>X.gtoreq.0. A vapor discharge device is provided having an arc tube which includes electrodes therein coated with such emissive material.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: May 5, 1992
    Assignees: GTE Products Corporation, GTE Sylvania N.V.
    Inventors: David A. Goodman, John L. Plumb, Rudy E. M. Geens, Richard A. Snellgrove, Elliot Wyner