Patents by Inventor Maxim L. Seleznev

Maxim L. Seleznev 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).

  • Castable refractory investment mold materials and methods of their use in infiltration casting
    Patent number: 6776219
    Abstract: Methods and materials for preparing investment molds useful in pressure infiltration casting of near net-shape metal or metal matrix composite (MMC) components. One embodiment of the invention includes disposing a slurry of an appropriately sized refractory material and a vehicle around a preform or fugitive pattern, removing the bulk of the vehicle, then curing/drying the refractory material to create an investment mold of the invention. Subsequently, pressure infiltration casting with a molten infiltrant using the investment mold permits infiltration of the mold cavity and/or preform without infiltration of the investment mold. As a result, the investment mold readily is removed to provide the near net-shape metal or MMC component. In other embodiments of the invention, a non-fugitive pattern is used, typically with a modified refractory cement of the invention.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: August 17, 2004
    Assignee: Metal Matrix Cast Composites, Inc.
    Inventors: James A. Cornie, Maxim L. Seleznev, Brett M. Schulz, Shiyu Zhang