Patents by Inventor Dawn D. Mandich

Dawn D. Mandich 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).

  • Methods for manufacturing investment casting shells
    Patent number: 6951239
    Abstract: An at least two step heating process is used to strengthen the shell of an investment casting mold including a refractory metal core. The first stage may occur under otherwise oxidizing conditions at a low enough temperature to avoid substantial core oxidation. The second stage may occur under essentially non-oxidizing conditions at a higher temperature.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: October 4, 2005
    Assignee: United Technologies Corporation
    Inventors: Jacob A. Snyder, James T. Beals, Joshua E. Persky, Carl R. Verner, Lea D. Kennard, Dawn D. Mandich, Stephen D. Murray