Patents by Inventor James M. Kostrubanic

James M. Kostrubanic 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).

  • Steel for enameling and method of making it
    Patent number: 5782999
    Abstract: An enameling steel having excellent strength after fire includes up to 0.008% C, 0.25-0.35% Mn, 0.03-0.05 Al, 0.010 to 0.014 N and 0.020-0.025 Nb.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: July 21, 1998
    Assignee: USX Corporation
    Inventor: James M. Kostrubanic