Patents by Inventor Thomas Michael Dunn

Thomas Michael Dunn 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).

  • Method for making steel with electric arc furnace
    Patent number: 6584137
    Abstract: A method of making steel in an electric arc furnace is provided. The method comprises the steps of measuring electrical current in at least two phases of electrical power supplied to electrodes in the furnace during a campaign, establishing a setpoint current level and an input time interval, and switching between modes of inputting exothermic energy into the steel melt when at least two phases have measured current levels below the setpoint for the input time interval.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: June 24, 2003
    Assignee: Nucor Corporation
    Inventors: Thomas Michael Dunn, Erik Rene Ocklind Nissen