Patents by Inventor Jean-Marc Cloue

Jean-Marc Cloue 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).

  • Method of heat treatment for desensitizing a nickel-based alloy relative to environmentally-assisted cracking, in particular for a nuclear reactor fuel assembly and for a nuclear reactor, and a part made of the alloy and subjected to the treatment
    Patent number: 8470106
    Abstract: A heat treatment method for desensitizing a nickel-based alloy with respect to environmentally-assisted cracking, the alloy having the following composition in percentages by weight: C?0.10%; Mn?0.5%; Si?0.5%; P?0.015%; S?0.015%; Ni?40%; Cr=12%-40%; Co?10%; Al?5%; Mo=0.1%-15%; Ti?5%; B?0.01%; Cu?5%; W=0.1%-15%; Nb=0-10%; Ta?10%; the balance being Fe, and inevitable impurities that result from processing, characterized in that the alloy is held at 950° C.-1160° C. in an atmosphere of pure hydrogen or containing at least 100 ppm of hydrogen mixed with an inert gas. A part made of a nickel-based alloy having the composition and that has been subjected to the heat treatment.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: June 25, 2013
    Assignee: Areva NP
    Inventors: Jean-Marc Cloue, Veronique Garat, Eric Andrieu, Julien Deleume
  • METHOD OF HEAT TREATMENT FOR DESENSITIZING A NIKEL-BASED ALLOY RELATIVE TO ENVIRONMENTALLY-ASSISTED CRAKING, IN PARTICULAR FOR A NUCLEAR FOR A NUCLEAR REACTOR FUEL ASSEMBLY AND FOR A NUCLEAR REACTOR, AND A PART MADE OF THE ALLOY AND SUBJECTED TO THE TREATMENT
    Publication number: 20100116383
    Abstract: A heat treatment method for desensitizing a nickel-based alloy with respect to environmentally-assisted cracking, the alloy having the following composition in percentages by weight: C?0.10%; Mn?0.5%; Si?0.5%; P?0.015%; S?0.015%; Ni?40%; Cr=12%-40%; Co?10%; Al?5%; Mo=0.1%-15%; Ti?5%; B?0.01%; Cu?5%; W=0.1%-15%; Nb=0-10%; Ta?10%; the balance being Fe, and inevitable impurities that result from processing, characterized in that the alloy is held at 950° C.-1160° C. in an atmosphere of pure hydrogen or containing at least 100 ppm of hydrogen mixed with an inert gas. A part made of a nickel-based alloy having the composition and that has been subjected to the heat treatment.
    Type: Application
    Filed: December 6, 2007
    Publication date: May 13, 2010
    Applicant: AREVA NP
    Inventors: Jean-Marc Cloue, Veronique Garat, Rric Andrieu, Julien Deleume
  • Nuclear fuel rod having pellet stack holding means
    Patent number: 4699757
    Abstract: A nuclear fuel rod has a sheath closed by end plugs and a stack of fuel pellets in the sheath. The stack is retained in abutment against one of the end plugs during handling of the fuel rod by a radially expandable element having a cross-sectional area in rest condition such as it frictionally engages an internal surface of said sheath. When the fuel rod is brought to the reactor operating temperature, the radially expandable element is contracted clear of frictional contact by temperature responsive means of a shape memory alloy operatively associated with said radially expandable element and having a transformation temperature above atmospheric temperature.
    Type: Grant
    Filed: April 17, 1986
    Date of Patent: October 13, 1987
    Assignee: Fragema
    Inventor: Jean-Marc Cloue