Patents by Inventor Carlo Lessi

Carlo Lessi 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 the purification of an aqueous alkali metal chloride solution from ammonium and iodine compounds
    Patent number: 5069884
    Abstract: Process for the purification of an aqueous alkali metal chloride solution from iodine compounds and ammonium compounds, in which the operation is carried out in two successive stages comprising a first stage in which the iodine compounds are oxidized to molecular iodine which is removed from the solution on a halogenated basic anion exchange resin, and a second stage in which the ammonium compounds are oxidized to form nitrogen which is removed in a stream of inert gas.
    Type: Grant
    Filed: May 8, 1990
    Date of Patent: December 3, 1991
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Mauro Filippone, Carlo Lessi