Patents by Inventor James Stepanic

James Stepanic 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).

  • High speed steels with phosphorus for improved cutting performance
    Patent number: 4168159
    Abstract: A new high speed steel with improved cutting life is provided consisting essentially of about 0.7 to 1.6% carbon, about 0.2 to 1.0% silicon, about 0.2 to 0.8% manganese, up to about 0.2% sulphur, about 0.5 to about 20% tungsten, about 0.5 to about 10% molybdenum, about 0.5 to 5% chromium, about 0.5 to about 6% vanadium, up to about 10% cobalt, more than 0.03% to about 0.20% phosphorus, the balance iron with residual impurities in ordinary amounts.
    Type: Grant
    Filed: February 28, 1978
    Date of Patent: September 18, 1979
    Assignee: Latrobe Steel Company
    Inventors: Rene Schlatter, David P. Hughes, James Stepanic