Patents by Inventor Stephen M. Grose

Stephen M. Grose 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).

  • Arc voltage distribution skewness as an indicator of electrode gap during vacuum arc remelting
    Patent number: 5708677
    Abstract: The electrode gap of a VAR is monitored by determining the skewness of a distribution of gap voltage measurements. A decrease in skewness indicates an increase in gap and may be used to control the gap.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: January 13, 1998
    Assignee: Sandia Corporation
    Inventors: Rodney L. Williamson, Frank J. Zanner, Stephen M. Grose
  • Controlling electrode gap during vacuum arc remelting at low melting current
    Patent number: 5621751
    Abstract: An apparatus and method for controlling electrode gap in a vacuum arc remelting furnace, particularly at low melting currents. Spectrographic analysis is performed of the metal vapor plasma, from which estimates of electrode gap are derived.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: April 15, 1997
    Assignee: Sandia Corporation
    Inventors: Rodney L. Williamson, Frank J. Zanner, Stephen M. Grose