Patents by Inventor Jean-Louis Raffestin

Jean-Louis Raffestin 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).

  • Nickel-based superalloy for industrial turbine blades
    Patent number: 5403546
    Abstract: A nickel-based superalloy suitable for directed solidification, in particular for industrial gas turbine parts, having the following composition by weight:Co: 0 to 5%Cr: 13 to 16%W: 0 to 2%Mo: 2 to 3.5%Al: 3.5 to 4%Ti: 3.5%Ta: 3.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: April 4, 1995
    Assignee: Office National D'Etudes et de Recherches/Aerospatiales
    Inventors: Tasadduq Khan, Pierre Caron, Jean-Louis Raffestin, Serge Naveos
  • Nickel-based monocrystalline superalloy, in particular for the blades of a turbomachine
    Patent number: 4900511
    Abstract: A low density superalloy having good resistance to oxidation has the following composition by weight:Co: 5.0 to 6.0%W: 4.8 to 5.2%Cr: 7.8 to 8.3%Al: 5.8 to 6.1%Ta: 3.3 to 3.7%Mo: 2.1 to 2.4%Ti: 1.8 to 2.2%B: .ltoreq.10 ppmZr: .ltoreq.50 ppmNi: balance to 100%.
    Type: Grant
    Filed: December 6, 1988
    Date of Patent: February 13, 1990
    Assignee: Office National d'Etudes et de Recherche Aerospatiales
    Inventors: Tasadduq Khan, Pierre Caron, Jean-Louis Raffestin
  • Nickel-based monocrystalline superalloy, in particular for the blades of a turbomachine
    Patent number: 4837384
    Abstract: A low density superalloy having good resistance to oxidation has the following composition by weight:______________________________________ Co: 5.0 to 6.0% W: 4.8 to 5.2% Cr: 7.8 to 8.3% Al: 5.8 to 6.1% Ta: 3.3 to 3.7% Mo: 2.1 to 2.4% Ti: 1.8 to 2.2% B: .ltoreq.10 ppm Zr: .ltoreq.50 ppm Ni: balance to 100%.
    Type: Grant
    Filed: May 28, 1987
    Date of Patent: June 6, 1989
    Assignee: Office National d'Etudes et de Recherche Aerospatiales
    Inventors: Tasadduq Khan, Pierre Caron, Jean-Louis Raffestin
  • Low density nickel based superalloy
    Patent number: 4777017
    Abstract: A low density nickel based superalloy having good creep characteristics w hot, and intended in particular for making turbomachine parts by monocrystalline solidification, wherein the composition of the alloy in percentages by weight is as follows:______________________________________ Co: 5% to 7% Cr: 5% to 10% Mo: 0.5% to 2.5% W: 3% to 5% Al: 6% to 7.5% Ti: 1.5% to 2.25% Nb: 0% to 0.5% Ta: 2% to 4% V: 0.3% to 0.6% Ni: balance to 100%. ______________________________________Parts, e.g. turbomachine blades, made from the alloy.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: October 11, 1988
    Assignee: Office National D'Etudes et de Recherches Aerospatiales (ONERA)
    Inventors: Tasadduq Khan, Pierre Caron, Jean-Louis Raffestin