Patents by Inventor Russell J. Lewis

Russell J. Lewis 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).

  • Wear indicator for refractory linings
    Patent number: 6686752
    Abstract: A vessel, as for a cyclone separator, includes a continuous electrical conductor embedded in the wall of the vessel for sensing when the lining has eroded.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: February 3, 2004
    Assignee: Fisher-Klosterman, Inc.
    Inventors: William L. Heumann, Frank Elvin, Russell J. Lewis, Edwin D. Tenney, Joseph A. Urban, Mark T. Noppenberger, James F. Miller