Patents by Inventor GILBERT M. GRATTI

GILBERT M. GRATTI 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).

  • Casting of single crystal superalloy articles with reduced eutectic scale and grain recrystallization
    Publication number: 20040007296
    Abstract: A single crystal casting is cast from a nickel base superalloy including Cr, Co, Mo, W, Ta, Al, Ti, Re and Hf as alloying elements with C increased effective to substantially reduce formation of a solidification-driven, as-cast eutectic/secondary phase scale metallurgically bonded to the casting when the alloy is cast as a single crystal and to reduce recrystallized grains when the casting is solution heat treated.
    Type: Application
    Filed: July 11, 2003
    Publication date: January 15, 2004
    Applicant: Howmet Research Corporation
    Inventors: John R. Mihalisin, John Corrigan, Gilbert M. Gratti, Russell G. Vogt
  • CASTING OF SINGLE CRYSTAL SUPERALLOY ARTICLES WITH REDUCED EUTECTIC SCALE AND GRAIN RECRYSTALLIZATION
    Publication number: 20020007877
    Abstract: A single crystal casting is cast from a nickel base superalloy including Cr, Co, Mo, W, Ta, Al, Ti, Re and Hf as alloying elements with C increased effective to substantially reduce formation of a solidification-driven, as-cast eutectic/secondary phase scale metallurgically bonded to the casting when the alloy is cast as a single crystal and to reduce recrystallized grains when the casting is solution heat treated.
    Type: Application
    Filed: March 26, 1999
    Publication date: January 24, 2002
    Inventors: JOHN R. MIHALISIN, JOHN CORRIGAN, GILBERT M. GRATTI, RUSSELL G. VOGT