Patents by Inventor Paul J. Bilek

Paul J. Bilek 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).

  • Alloy useful for producing ductile and compacted graphite cast irons
    Patent number: 4545817
    Abstract: The present invention is directed to an alloy composition and the method of treating molten cast iron with such alloy to produce ductile and compacted graphite cast irons. The alloy may contain about 0.1% to about 10% silicon, about 0.05 to about 2.0% cerium and/or other rare earth elements, about 0.5 to about 4% magnesium, about 0.5 to about 6.5% carbon (percent by weight) the balance being iron.
    Type: Grant
    Filed: April 9, 1984
    Date of Patent: October 8, 1985
    Assignee: Elkem Metals Company
    Inventors: Paul J. Bilek, Richard A. Flinn, Thomas K. McCluhan, Paul K. Trojan
  • Alloy and process for producing ductile and compacted graphite cast irons
    Patent number: 4472197
    Abstract: The present invention is directed to an alloy composition and the method of treating molten cast iron with such alloy to produce ductile and compacted graphite cast irons. The alloy may contain about 0.1% to about 10% silicon, about 0.05 to about 2.0% cerium and/or other rare earth elements, about 0.5 to about 4% magnesium, about 0.5 to about 6.5% carbon (percent by weight) the balance being iron.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: September 18, 1984
    Assignee: Elkem Metals Company
    Inventors: Paul J. Bilek, Richard A. Flinn, Thomas K. McCluhan, Paul K. Trojan
  • Method for reducing iron carbide formation in cast nodular iron
    Patent number: 4224064
    Abstract: A method for the production of cast nodular or ductile iron wherein molten iron having been first contacted with a graphite-spheroidizing agent is after-treated with an alloy consisting essentially of silicon, calcium, magnesium, aluminum, cerium, barium, and iron so as to reduce the formation of iron carbides or chill in the resulting cast nodular iron.
    Type: Grant
    Filed: April 27, 1979
    Date of Patent: September 23, 1980
    Assignee: Union Carbide Corporation
    Inventors: Paul J. Bilek, William A. Henning, Thomas K. McCluhan, Julian M. Dong