Patents by Inventor George D. Pfaffman

George D. Pfaffman 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).

  • LOCALLY AUSTEMPERED DUCTILE IRON
    Publication number: 20100084059
    Abstract: A system and method for producing locally austempered ductile iron includes a computer program for closely controlling the heating and cooling of an iron part or workpiece. The process allows for the austempering of a relatively low cost iron workpiece to produce significantly higher quality end products. The locally austempered regions may be formed to a substantial controlled depth.
    Type: Application
    Filed: October 2, 2009
    Publication date: April 8, 2010
    Inventors: George D. Pfaffman, John R. Keough, Robert J. Madeira, Christopher Allen Bixler