Patents by Inventor Joseph M. Rua

Joseph M. Rua 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).

  • Graphitization furnace
    Patent number: 5299225
    Abstract: A lengthwise graphitization furnace for the conversion of a string of amorphous carbon bodies to graphite has an open semi-cylindrical shell of corrugated steel modules lined with cast refractory. The combination of the corrugated shell and cast refractory liner contributes to faster heat transfer by both convection and radiation, and to greater mechanical and thermal stability. The furnace is designed in modules allowing for easy replacement of worn components.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: March 29, 1994
    Assignee: Sigri Great Lakes Carbon Corp.
    Inventors: Berch Y. Karagoz, Joseph M. Rua, Lyman T. Moore, Larry E. Ledford, Donald P. Allen, Gregory Agnello, Thomas E. Fleckenstein
  • Scalloped nipple for water-cooled electrodes
    Patent number: 4689799
    Abstract: A water-cooled electrode for an electric arc furnace is fitted with a copper nipple 10, increased surface area through fluting or drilled or threaded passages for vastly improved cooling, joining the water-cooled and graphite portions of the electrode.
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: August 25, 1987
    Inventors: Berch Y. Karagoz, Lyman T. Moore, Joseph M. Rua, Mark D. Travers, Donald P. Allen