Patents by Inventor Paul I. Fontaine

Paul I. Fontaine 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).

  • Calcium oxide based flux compositions
    Patent number: 4561894
    Abstract: A particulate flux composition suitable for desulphurizing and/or dephosphorizing molten ferrous metals and for use as a mould flux comprises prefused particles comprising calcium oxide and at least one other component, such as alumina, iron oxide, calcium fluoride, magnesium fluoride, sodium fluoride, silica, sodium oxide, zirconium oxide, titanium oxide or sodium borate, and in which each particle has a substantially vitreous amorphous structure. The composition is highly resistant to hydration and does not introduce hydrogen into the molten metal.
    Type: Grant
    Filed: July 18, 1985
    Date of Patent: December 31, 1985
    Assignee: Foseco International Limited
    Inventors: Paul I. Fontaine, Evan T. R. Jones, John K. Batham
  • Treatment agents for molten steel
    Patent number: 4462823
    Abstract: Treatment agents for steel suitable for desulphurizing molten steel comprise granules containing both magnesium oxide and/or carbonate and aluminium, the proportion of aluminium in the surface of the granules being substantially less than the overall proportion of aluminium in the granules. The granules are suitable for application into the molten steel via injection techniques.
    Type: Grant
    Filed: November 23, 1983
    Date of Patent: July 31, 1984
    Assignee: Foseco International Limited
    Inventors: Paul I. Fontaine, Evan T. R. Jones, John K. Batham
  • Nickel-base alloys of improved high temperature tensile ductility
    Patent number: 4174964
    Abstract: The tensile ductility of low chromium substantially precipitation hardened nickel-base alloys within the temperature range of 600.degree. C. to 900.degree. C. is improved through the incorporation in the alloys of controlled amounts of yttrium.
    Type: Grant
    Filed: January 25, 1974
    Date of Patent: November 20, 1979
    Assignee: The International Nickel Company, Inc.
    Inventors: Stuart W. K. Shaw, Paul I. Fontaine