Patents Assigned to Comissariat a l'Energie Atomique
  • Publication number: 20080186023
    Abstract: The device for measuring magnetic field by using a magnetoresistive sensor comprises at least one magnetoresistive sensor (5), a module (50) for measuring the resistance of the magnetoresistive sensor (5), a generator module (40, 6) for generating an additional magnetic field in the space containing the magnetoresistive sensor (5), and a control unit (60) firstly for selectively controlling the generator module (40, 6) to apply an additional magnetic field pulse possessing a first value with first polarity that is positive or negative and magnitude that is sufficient to saturate the magnetoresistive sensor (5), and secondly for selectively controlling measurement of the resistance of the magnetoresistive sensor (5) by the module (50) for measuring resistance.
    Type: Application
    Filed: October 17, 2005
    Publication date: August 7, 2008
    Applicant: COMISSARIAT A L'ENERGIE ATOMIQUE
    Inventors: Nicolas Biziere, Claude Fermon, Myriam Pannetier
  • Publication number: 20080061224
    Abstract: This invention relates to the field of signal processing, in particular x-ray or gamma-ray spectrometry. It relates to a method as well as a device for improved processing making it possible to correct two-parameter spectra.
    Type: Application
    Filed: April 21, 2005
    Publication date: March 13, 2008
    Applicants: Comissariat A L'energie Atomique, Compagnie Generale Des Matieres Nuclearies
    Inventor: Guillaume Montemont
  • Publication number: 20070107087
    Abstract: A method for increasing resistance of a plant to photooxidative stress, which entails the steps of transforming the plant with at least one polynucleotide encoding a protein of the ELIP family, and expressing the protein in the plant.
    Type: Application
    Filed: March 3, 2003
    Publication date: May 10, 2007
    Applicant: Comissariat A L'Energie Atomique
    Inventors: Laurent Nussaume, Michel Havaux, Claire Hutin
  • Patent number: 6554895
    Abstract: A method for manufacturing a solid single crystal of an electrically conductive material by pulling from a molten mass of this material, the material presenting atom clusters at melt. The method includes: a melt stage so as to obtain a molten mass, the melt stage procuring a colder zone of the molten mass, from which the single crystal will be pulled, and a hotter zone having sufficient temperature to melt the atom clusters; a stage of application to the molten mass of a rotating magnetic field allowing the atom clusters to be displaced from the colder zone to the hotter zone; and a stage of growth by pulling of the single crystal after the atom clusters have been displaced from the colder zone to the hotter zone.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: April 29, 2003
    Assignee: Comissariat a l'Energie Atomique
    Inventors: Thierry Duffar, Jean-Paul Garandet
  • Patent number: 6229783
    Abstract: An optical recording device including a medium having a first recording level, which includes a first active film having amorphous areas and crystalline areas, the first recording level being configured to produce a phase difference between an optical beam reflected by the amorphous areas and an optical beam reflected by the crystalline areas; and a second recording level superimposed on the first recording level and including a second active layer with first areas and second areas, the second recording level being configured to produce an intensity difference between an optical beam reflected by the first areas and an optical beam reflected by the second areas.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: May 8, 2001
    Assignee: Comissariat a l'Energie Atomique
    Inventors: Jean-Michel Bruneau, Bernard Bechevet
  • Patent number: 6103350
    Abstract: The present invention consists of obtaining from a series of measurements or original images of varying precision of a mobile object, such as a beating heart, a sequence of restored images minimizing an error function comprising an adequation term between the restored images and the measurements, a space moving term of images to be restored and a time smoothing term of restored images, taking account of an evaluation of the movement of the object between the original image during the considered phase of the movement and the image of the object in a neighboring phase.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: August 15, 2000
    Assignee: Comissariat a l'Energie Atomique
    Inventors: Pierre Grangeat, Jerome De Murcia
  • Patent number: 4915499
    Abstract: The device according to the invention comprises a wide spectrum lighting source (60), a first interferometer (FP1) serving as a filter, a second interferometer (FP2) with the same characteristics as the first and a photodetector (66). The identity of the characteristics of the two interferometers makes it possible to work with higher lighting power levels than in the prior art. The two interferometers are advantageously constituted by a single apparatus used twice.Application to the measurement of the position, displacement or speed of a surface, particularly in detonics.
    Type: Grant
    Filed: January 12, 1988
    Date of Patent: April 10, 1990
    Assignee: Comissariat a l'Energie Atomique
    Inventors: Serge Gidon, Gilles Behar
  • Patent number: 4845365
    Abstract: According to the invention, under glancing incidence a first radiation (6) in the infrared range and which is linearly polarized is supplied to a target (2) made from a non-electrically insulating material and simultaneously to said target is supplied under a non-glancing incidence a second radiation (8) in the visible or ultraviolet range, in such a way that a same zone of the target is reached by the first and second radiations, the polarizing plane of the first radiation also being such that it contains a perpendicular to said zone, which then produces electrons.Application to the production of free electron lasers.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: July 4, 1989
    Assignee: Comissariat A L'Energie Atomique
    Inventors: Jean-Pierre Girardeau-Montaut, Claire Girardeau-Montaut, Angelo Erbeia
  • Patent number: 4653180
    Abstract: A tool for the manufacture of a fuel assembly, said tool comprising for each end of an assembly an inner metal plate which can be applied to the bottom of an end member, an outer metal plate which can be displaced, under the action of a jack, along sliding columns fixed to the inner plate, in longitudinal translation with respect thereto and threaded ties traversing corresponding openings in the end member and in the inner and outer plates, able to engage with the internal thread of the guide tubes, and each provided with a head on which is supported a spring for compensating the action of the jack. A method for utilizing the tool is set forth, also.
    Type: Grant
    Filed: February 20, 1985
    Date of Patent: March 31, 1987
    Assignees: Comissariat a l'Energie Atomique, Framatome & CIE
    Inventors: Jacques Le Pargneux, Michel Bonnamour, Gerard Filary