Patents by Inventor Henri Mercier

Henri Mercier 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 depositing alumina onto a substrate and alumina regeneration
    Patent number: 4276327
    Abstract: A process for the concurrent deposition and regeneration of alumina onto a substrate from an aqueous sodium aluminate solution comprising immersing the substrate in an aqueous sodium aluminate solution of which the composition is controlled and adjusted by passage through a regeneration circuit where alumina is added to make up for the quantity deposited. The invention may be used in the production of adsorbents for the lead present in the exhaust gases of internal combustion engines.
    Type: Grant
    Filed: November 24, 1976
    Date of Patent: June 30, 1981
    Assignee: Pechiney Ugine Kuhlmann
    Inventors: Bernard P. H. Hue, Henri A. Mercier
  • Purification of solutions circulating in the bayer cycle
    Patent number: 4101629
    Abstract: Process for treating solutions from the Bayer process, enabling amounts of sodium carbonate and sodium oxalate or sodium salts of organic acids corresponding to the amounts of these compounds dissolved during the attack on a bauxite to be removed by means of a barium compound, and without consumption of the latter.
    Type: Grant
    Filed: October 20, 1976
    Date of Patent: July 18, 1978
    Assignee: Aluminium Pechiney
    Inventors: Henri Mercier, Robert Magrone, Jean Deabriges