Patents by Inventor Richard J. Sulewski

Richard J. Sulewski 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).

  • Hot rolled steel product and method for producing same
    Patent number: 4400223
    Abstract: A hot rolled, high strength, low alloy steel strip is prepared from a steel having a controlled composition employing small quantities of Cb and V, and the steel is renitrogenized. Deliberate Si addition is avoided. The carbon and manganese contents are controlled, and a sulfur controlling agent is employed. Hot rolling practice is controlled. The hot rolled steel strip has a microstructure consisting essentially of a ferrite matrix with scattered pearlite, a relatively fine ferrite grain size and excellent yield strength and ductility.
    Type: Grant
    Filed: August 21, 1981
    Date of Patent: August 23, 1983
    Assignee: Inland Steel Company
    Inventors: William E. Heitmann, Richard J. Sulewski