Patents by Inventor Denis Vayr

Denis Vayr 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 of radium stabilizing in solid effluent or effluent containing substances in suspension
    Patent number: 8993828
    Abstract: Method of stabilizing radium present in radium-containing effluent, in which the effluent and a metal chloride are mixed, then the previously obtained mixture is reacted with a sulfate ion to obtain effluent containing stabilized radium. The chloride can be a barium, strontium or lead chloride. The sulfate ion can be supplied by the addition of sulfuric acid, sulfuric anhydride, soluable sulfate or soluble sulfate salt. The method applies in particular to the treatment of solid radium-containing effluents or effluents containing substances in suspension coming from chemistry or metallurgy of zirconium or treatment of uranium-containing minerals.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: March 31, 2015
    Assignee: Areva NP
    Inventor: Denis Vayr
  • METHOD OF RADIUM STABILIZING IN SOLID EFFLUENT OR EFFLUENT CONTAINING SUBSTANCES IN SUSPENSION
    Publication number: 20100113858
    Abstract: Method of stabilizing radium present in radium-containing effluent, in which the effluent and a metal chloride are mixed, then the previously obtained mixture is reacted with a sulfate ion to obtain effluent containing stabilized radium. The chloride can be a barium, strontium or lead chloride. The sulfate ion can be supplied by the addition of sulfuric acid, sulfuric anhydride, soluable sulfate or soluble sulfate salt. The method applies in particular to the treatment of solid radium-containing effluents or effluents containing substances in suspension coming from chemistry or metallurgy of zirconium or treatment of uranium-containing minerals.
    Type: Application
    Filed: August 10, 2007
    Publication date: May 6, 2010
    Applicant: COMPAGNIE EUROPEENNE DU ZIROCNIUM CEZUS
    Inventor: Denis Vayr