Patents by Inventor Paul E. Repas

Paul E. Repas 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).

  • Strengthening response in columbium-containing high-strength low-alloy steels
    Patent number: 4405388
    Abstract: A high-strength, low-alloy steel sheet containing 0.01 to 0.1 percent C, 0.3 to 1.2 percent Mn, 0.03 to 0.15 percent Cb consistently produces yield strengths ranging from 75 to 100 ksi when the potential for placing and maintaining the Cb in solution in austenite is maximized, by adding sufficient titanium to combine with the nitrogen in the steel. The amounts of titanium employed, i.e. 0.010 to 0.045 percent, are substantially leaner than heretofore thought necessary to achieve such high yield strengths.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: September 20, 1983
    Assignee: United States Steel Corporation
    Inventor: Paul E. Repas