Patents by Inventor Ken Natesan

Ken Natesan 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).

  • Structural alloy with a protective coating containing silicon or silicon-oxide
    Patent number: 5376458
    Abstract: An iron-based alloy containing chromium and optionally, nickel. The alloy has a surface barrier of silicon or silicon plus oxygen which converts at high temperature to a protective silicon compound. The alloy can be used in oxygen-sulfur mixed gases at temperatures up to about 1100.degree. C.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: December 27, 1994
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Ken Natesan
  • Oxidation sulfidation resistance of Fe-Cr-Ni alloys
    Patent number: 4470848
    Abstract: High temperature resistance of Fe-Cr-Ni alloy compositions to oxidative and/or sulfidative conditions is provided by the incorporation of about 1-8 wt. % of Zr or Nb and results in a two-phase composition having an alloy matrix as the first phase and a fine grained intermetallic composition as the second phase. The presence and location of the intermetallic composition between grains of the matrix provides mechanical strength, enhanced surface scale adhesion, and resistance to corrosive attack between grains of the alloy matrix at temperatures of 500.degree.-1000.degree. C.
    Type: Grant
    Filed: July 26, 1983
    Date of Patent: September 11, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Ken Natesan, David J. Baxter