Patents by Inventor Stephen L. Ferrel

Stephen L. Ferrel 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).

  • Manufacture of copper rod
    Patent number: 5293924
    Abstract: A method is disclosed for improving the continuous casting process for making copper by using a probe and analyzer which measures the gases present in the molten copper and controls the process based on the analyzer results.
    Type: Grant
    Filed: February 10, 1993
    Date of Patent: March 15, 1994
    Assignee: ASARCO Incorporated
    Inventors: John R. Hugens, Jr., Stephen L. Ferrel, Gary L. Spence