Patents by Inventor Jacques Delagrange

Jacques Delagrange 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 and device for decontaminating a metallic surface
    Patent number: 9932686
    Abstract: The present invention concerns a method and device for oxidative erosion or for decontamination of a metallic surface, comprising a step consisting of intermittently polarizing the metallic surface to be eroded or decontaminated, placed in contact with a solution containing manganese VII, at a more anodic electric potential than the corrosion potential of said surface.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: April 3, 2018
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Jean-Michel Fulconis, Jacques Delagrange, Francis Dalard, Jean-Pierre Caire
  • METHOD AND DEVICE FOR DECONTAMINATING A METALLIC SURFACE
    Publication number: 20110259759
    Abstract: The present invention concerns a method and device for oxidative erosion or for decontamination of a metallic surface, comprising a step consisting of intermittently polarising the metallic surface to be eroded or decontaminated, placed in contact with a solution containing manganese VII, at a more anodic electric potential than the corrosion potential of said surface.
    Type: Application
    Filed: October 12, 2009
    Publication date: October 27, 2011
    Inventors: Jean-Michel Fulconis, Jacques Delagrange, Francis Dalard, Jean-Pierre Caire
  • Method for treating an effluent, especially a radioactive effluent, containing organic matter
    Patent number: 7204929
    Abstract: Method of treating an aqueous effluent containing organic matters in solution, comprising the following successive steps: the effluent is rendered basic; the effluent rendered basic is mineralized by being brought into contact with a gaseous oxidizing agent; the mineralized basic effluent is rendered acidic; and the effluent rendered acidic is again mineralized by being brought into contact with the gaseous oxidizing agent.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: April 17, 2007
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Jean-Michel Fulconis, Jacques Delagrange, Jean Sarrazin
  • Method for treating an effluent, especially a radioactive effluent, containing organic matter
    Publication number: 20040149665
    Abstract: Method of treating an aqueous effluent containing organic matters in solution, comprising the following successive steps:
    Type: Application
    Filed: December 19, 2003
    Publication date: August 5, 2004
    Inventors: Jean-Michel Fulconis, Jacques Delagrange, Jean Sarrazin
  • Dissolution and decontamination process
    Patent number: 6716402
    Abstract: The present invention concerns a process for dissolving ruthenium deposits that are present on a surface and a process for decontaminating the internal circuits of nuclear fuel reprocessing plants using the said dissolution process. The process according to the invention comprises bringing the said surface into contact with an aqueous solution of perruthenate, with the said aqueous solution having a pH equal to or greater than 12, so that the ruthenium is oxidised.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: April 6, 2004
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Jean-Michel Fulconis, Jacques Delagrange, Francis Dalard
  • Method and device for radioactive decontamination of a steel wall
    Patent number: 6702902
    Abstract: Disclosed a method for radioactive decontamination of a steel surface, which is performed by bringing the surface to be decontaminated into contact with a pickling solution comprising a first iron oxidation agent, wherein bringing into contact being achieved by means of the direct continuous introduction into the pickling solution of a gas comprising a second oxidation agent, and a device for implementing the said method.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: March 9, 2004
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Jean-Michel Fulconis, Jacques Delagrange, Francis Dalard
  • Degreasing composition and methods using same
    Patent number: 6475296
    Abstract: The present invention relates to a degreasing composition, to a liquid, to a gel and to a degreasing foam which comprise said composition. The composition according to the invention comprises a base, a polyethoxylated fatty alcohol, saturated or unsaturated, a copolymer of ethylene oxide and propylene oxide, and water. The invention also relates to a degreasing and/or decontamination process of a surface using said composition, said liquid, said gel, and/or said degreasing foam.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: November 5, 2002
    Assignees: Electricite de France, Commissariat A l'Energie Atomique, Compagnie Generale des Matieres Nucleaires
    Inventors: Jean-Paul Gauchon, Jacques Delagrange, Maria Faury, Bruno Fournel
  • Dissolution and decontamination process
    Publication number: 20020150196
    Abstract: The present invention concerns a process for dissolving ruthenium deposits that are present on a surface and a process for decontaminating the internal circuits of nuclear fuel reprocessing plants using the said dissolution process.
    Type: Application
    Filed: January 22, 2002
    Publication date: October 17, 2002
    Inventors: Jean-Michel Fulconis, Jacques Delagrange, Francis Dalard