Patents by Inventor Andre Girou

Andre Girou 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 of making sodium perborate
    Patent number: 4298585
    Abstract: In a process of making sodium perborate, crystallization is performed in the presence of an organic polymer with a high potential content of free carboxylic groups derived from maleic anhydride, selected from the copolymers of maleic anhydride with an organic compound with an ethylene bond. The process is applicable to obtaining sodium perborate crystals of high apparent density of good resistance to abrasion and of limited, relatively high granulometric size.
    Type: Grant
    Filed: April 16, 1980
    Date of Patent: November 3, 1981
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jean Malafosse, Andre Girou, Herve Olivier, Michel Dupont
  • Scale-inhibiting compositions for aqueous solutions
    Patent number: 4148728
    Abstract: Compositions for inhibiting the deposition of scale from aqueous solutions onto surfaces in contact with the solutions, such compositions comprising at least one fluorocarbon which will deposit on such surface, exemplary fluorocarbons being at least one of the following: ##STR1## where n is an integer from 2 to 20, the compositions optionally containing hydroxyethylenediphosphonic acid, together with methods for treating surfaces with such fluorocarbons.
    Type: Grant
    Filed: November 22, 1976
    Date of Patent: April 10, 1979
    Assignee: Produits Chimiques Ugine Kuhlmann
    Inventors: Henri Roques, Andre Girou