Patents by Inventor Ivan A. Franson

Ivan A. Franson 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).

  • Low nickel, copper containing chromium-nickel-manganese-copper-nitrogen austenitic stainless steel
    Patent number: 5286310
    Abstract: An low-nickel austenitic stainless alloy containing about 16.5 to about 17.5% by weight chromium; about 6.4 to about 8.0% by weight manganese; about 2.5 to about 5.0% by weight nickel; about 2.0 to less than about 3.0% by weight copper; less than about 0.15% by weight carbon; less than about 0.2% by weight nitrogen; less than about 1% by weight silicon; and the balance essentially iron with incidental impurities.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: February 15, 1994
    Assignee: Allegheny Ludlum Corporation
    Inventors: Gary M. Carinci, Ivan A. Franson, Dominic A. Sorace, John P. Ziemianski