Patents by Inventor Al Wilde

Al Wilde 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).

  • Wear resistant ductile iron
    Patent number: 6258180
    Abstract: Austempered ductile iron castings having primary iron carbides uniformly dispersed throughout an ausferritic matrix, and methods of making the same, are described. The dissolution of the primary iron carbides into the ausferritic matrix during the austempering process is prevented or lessened by altering the chemical composition of the ductile iron, employing a stabilizing agent, by altering the processing parameters of the austempering process, or any combination thereof.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: July 10, 2001
    Assignee: Waupaca Foundry, Inc.
    Inventors: Al Wilde, Dan Korpi, Brian Schultz