Patents by Inventor Henri Barnier

Henri Barnier 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).

  • Publication number: 20040050783
    Abstract: The invention concerns the unclogging of a hollow fibre filter operating in frontal mode. Said filter comprises a filter body (1) maintaining the hollow fibres (9) in a vertical position, the liquid to be filtered being introduced into the volume of the filter body (1) via the bottom, the filtrate being evacuated via the top of the filter. The unclogging comprises a reverse injection of gas into the hollow fibres (9) and a circulation of unclogging liquid in the volume of the filter body (1), said circulation of liquid taking place from the top towards the bottom of the filter body.
    Type: Application
    Filed: May 27, 2003
    Publication date: March 18, 2004
    Inventors: Henri Barnier, Jean Givaudan
  • Patent number: 5925254
    Abstract: The invention relates to a process for separating sodium from aqueous effluents resulting from the reprocessing of spent nuclear fuel elements. According to the invention, the effluent (3) is introduced into a tangential filtration module (11), whose membranes are made from polyaramide, sulphonated polysulphone or perfluorinated ionomer, so as to collect a permeate P containing sodium, depleted in radioactive elements and a retentate R enriched in radioactive elements.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: July 20, 1999
    Assignees: Commissariat A l'Energie Atomique, Compagnie Generale des Matieres Nucleaires
    Inventors: Marc Lemaire, Jacques Foos, Alain Guy, Eric Gaubert, Colette Bardot, Rodolph Chomel, Jean-Jacques Radecky, Alain Maurel, Henri Barnier
  • Patent number: 5171409
    Abstract: Process of continuously separating electrically charged, solid pulverulent materials in the form of a suspension in an electrophoresis and electroosmosis cell, characterized in that a fraction of the catholyte is drained off, that a portion thereof is treated with an acid, preferably gaseous, agent, that the treated portion is re-introduced into the cathode compartment, whereas the other part of the drained-off fraction is eliminated.The acid treatment is effected during continous pH measurements on the drained-off fraction of the catholyte.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: December 15, 1992
    Assignee: Omya S.A.
    Inventors: Henri Barnier, Bernard Barroyer, Claude Cabannes
  • Patent number: 4906746
    Abstract: Process for the production and extraction of polysaccharides from a porphyridium cruentum culture and apparatus for performing the process.This production and extraction process comprises a stage of concentrating the polysaccharides consisting of leaving the culture medium (1) in a photoreactor (22) exposed to sunlight under stagnant conditions and at ambient temperature, leading to the formation of a polysaccharide-rich cream (23) and recovering said cream by skimming, a stage (24) of heating the concentrate obtained at a temperature between and C., a stage of separating the solid and liquid phases formed (26), a stage (30) of precipitating the polysaccharides contained in the liquid phase and a stage (16) of drying the precipitate obtained.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: March 6, 1990
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Henri Barnier, Patrick F. Ferreira Dos Santos, Claude Gudin, Catherine Thepenier