Patents by Inventor Darrell E. Murphy

Darrell E. Murphy 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).

  • Process for removing stains from steel sheet in a continuous pickling line
    Patent number: 6491761
    Abstract: The present invention is directed to a mothod for preventing the formation of additional surface stains on destained steel sheet processed in a continuous pickle line operation.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: December 10, 2002
    Assignee: Bethlelem Steel Corporation
    Inventors: John W. Wray, Darrell E. Murphy, Michael Pilnock