Patents by Inventor Alain Chotard

Alain Chotard 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).

  • Nuclear reactor green and sintered fuel pellets, corresponding fuel rod and fuel assembly
    Patent number: 9042507
    Abstract: A sintered fuel pellet for a water nuclear reactor fuel rod including a peripheral wall extending along a central axis and two end faces. At least one of the end faces includes at least a first chamfer extending from the peripheral wall towards the central axis with a first non-zero slope with respect to a plane perpendicular to the central axis and a second chamfer extending from the first chamfer towards the central axis with a second non-zero slope with respect to a plane perpendicular to the central axis, wherein the first slope is different from the second slope.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: May 26, 2015
    Assignee: AREVA NP
    Inventors: Wolfgang Doerr, Andreas Hoff, William Jentzen, Dave Curran, Alain Chotard, Pascal Deydier
  • NUCLEAR REACTOR GREEN AND SINTERED FUEL PELLETS, CORRESPONDING FUEL ROD AND FUEL ASSEMBLY
    Publication number: 20110176650
    Abstract: A sintered fuel pellet for a water nuclear reactor fuel rod including a peripheral wall extending along a central axis and two end faces. At least one of the end faces includes at least a first chamfer extending from the peripheral wall towards the central axis with a first non-zero slope with respect to a plane perpendicular to the central axis and a second chamfer extending from the first chamfer towards the central axis with a second non-zero slope with respect to a plane perpendicular to the central axis, wherein the first slope is different from the second slope.
    Type: Application
    Filed: September 29, 2009
    Publication date: July 21, 2011
    Applicant: AREVA NP
    Inventors: Wolfgang Doerr, Andreas Hoff, William Jentzen, Dave Curran, Alain Chotard, Pascal Deydier
  • Modular nuclear fuel element, modular capsule for such element and method for such element and method for manufacturing such modular capsule
    Patent number: 4919884
    Abstract: The fuel element comprises a plurality of modular capsules (5) arranged in sequence axially within a sheath (2). Each of the capsules (5) comprises a tubular case (10) closed at both ends by a porous element (13, 14) and enclosing a stack of pellets (11) in contact with the inner surface of the case (10) without radial clearance. The outside diameter of the capsules (5) is such that a very small radial clearance exists between the outer surface of the capsule (5) and the inner surface of the sheath (2).
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: April 24, 1990
    Assignees: Framatome, Cogema
    Inventor: Alain Chotard