Patents by Inventor Robert S. Bogan

Robert S. Bogan 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 of desulfurization in vacuum processing of steel
    Patent number: 5228902
    Abstract: A method for desulfurizing molten steel while the steel is subjected to a vacuum dehydrogenation treatment, comprising adding to the steel in a vacuum chamber a desulfurizing agent in lump form and comprising, by weight percent, about 50% CaO, about 38% CaF.sub.2, and about 10% MgO.
    Type: Grant
    Filed: September 3, 1992
    Date of Patent: July 20, 1993
    Assignee: USX Corporation
    Inventors: Robert S. Bogan, Brad Hjerpe, Roger L. Marquart, James D. Reisinger
  • Method for providing steel with lowered hydrogen level after ladle treatment
    Patent number: 5106412
    Abstract: A method is provided for obtaining steel with lowered hydrogen levels after ladle treatment. The method includes covering molten steel in the ladle with a particulate mixture consisting essentially of calcium aluminate and dolomitic limestone. The mixture is used in amounts of about 5 to 25 pounds per net ton of molten steel. Using the method of this invention, some steels to be cast without vacuum degassing to reduce the hydrogen level.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: April 21, 1992
    Assignee: USX Corporation
    Inventors: Robert S. Bogan, Keith E. Sessions, William J. Stolnacker, deceased