Patents by Inventor Guy Lefillatre

Guy Lefillatre 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).

  • Process for bituminizing radioactive waste constituted by cation and/or anion exchange resins
    Patent number: 4663086
    Abstract: The invention relates to a process for bituminizing radioactive waste constituted by cation and/or anion exchange resins.This process comprises a resin pretreatment stage performed so as to replace the H.sup.+ ions of the cation exchange resins by ions chosen from the group including Ca.sup.++, Sr.sup.++ and Ba.sup.++ and/or for replacing the OH.sup.- and/or Cl.sup.- ions of the anion exchange resins by an anion chosen from the group including NO.sub.3.sup.-, HCO.sub.2.sup.- and CH.sub.3 CO.sub.2.sup.-.This pretreatment makes it possible to increase the capacity of the coating installation and limit the swelling in water of the bituminized coatings obtained.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: May 5, 1987
    Assignee: Commissariat a l'Energie Atomique
    Inventor: Guy Lefillatre