Patents by Inventor Jacques Duhayon

Jacques Duhayon 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 for processing a mixture of air and rare gases, especially xenon and krypton
    Patent number: 4277363
    Abstract: The method for processing a mixture of air and rare gases consisting especially of xenon and krypton which are at least partially radioactive and especially for processing gaseous effluents arising from the reprocessing of irradiated fuels comprises a step involving concentration of the rare gases in solution in liquid argon by cryogenic distillation of the light gases and mainly nitrogen from the liquefied mixture.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: July 7, 1981
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Jacques Duhayon, Jean-Pierre Goumondy, Alain Leudet, Jean-Claude Rousseau
  • Method of extraction, trapping and storage of radioactive iodine contained in irradiated nuclear fuels
    Patent number: 4275045
    Abstract: After dissolving irradiated nuclear fuel in a nitric acid medium, the vapor produced by this dissolution and consisting of water, nitrogen oxides and iodine is passed into a condenser, then into a column for the absorption of the nitrous vapor in which is formed recombined nitric acid containing iodine and nitrous ions, the iodine contained in the recombined acid being then separated-out. The nitrous ions present in the recombined acid have a favorable influence on the important first stage of that separation.
    Type: Grant
    Filed: February 27, 1979
    Date of Patent: June 23, 1981
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Maurice Anav, Jacques Duhayon, Jean-Pierre Goumondy, Andre Leseur, Edmond Zellner
  • Method for recovery of hydrogen chloride from dilute solutions
    Patent number: 4036939
    Abstract: The method of recovery of hydrogen chloride in gaseous form from an organic solvent loaded with hydrochloric acid in a dilute aqueous solution consists in carrying out prior to distillation a dehydration of the loaded organic solvent in a dehydration extractor in which the solvent is circulated countercurrent to an aqueous solution having a high chloride concentration.
    Type: Grant
    Filed: April 24, 1974
    Date of Patent: July 19, 1977
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Jacques Duhayon, Michel Jean Jacques, Pierre Michel, Maurice Tarnero, Edmond Zellner