Patents by Inventor Francis Dalard

Francis Dalard 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
  • 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
  • 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