Patents by Inventor Millicent H. Thomas

Millicent H. Thomas 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).

  • Batch-annealed dual-phase steel
    Patent number: 4437902
    Abstract: Dual-phase steel, consisting essentially of a ferrite matrix containing islands of martensite, is produced by batch annealing of hot or cold rolled steel having carbon below 0.2% and manganese below 2% and at least critical contents of copper (0.4%) and nickel (0.6%), with heat to the alpha plus gamma region, followed by slow cooling. This procedure is effective and controllable, and yields a dual-phase steel product that has high tensile strength with excellent elongation properties and that develops good yield strength upon moderate deformation.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: March 20, 1984
    Assignee: Republic Steel Corporation
    Inventors: John W. Pickens, John K. Abraham, Raymond E. Mintus, Millicent H. Thomas