Patents by Inventor Florence Syoen

Florence Syoen 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 obtaining refractory metal oxides based on silica by sol-gel route in aqueous medium
    Patent number: 5130110
    Abstract: Process for obtaining by sol-gel route refractory metal oxides based on silica in which a monolithic gel is prepared, in an aqueous medium, at a temperature of less than 60.degree. C., by leaving at rest an aqueous sol obtained by simple mixing in stoichiometric quantities of an aqueous sol of silicic acid and of one or more aqueous solutions of a water-soluble salt of one or more other constitutive metals of these oxides, then the monolithic gel obtained is calcined at a temperature of less than 1000.degree. C. after it has been dried at a temperature of less than 150.degree. C.
    Type: Grant
    Filed: December 18, 1990
    Date of Patent: July 14, 1992
    Assignee: Societe Francaise Hoechst
    Inventors: Patrice Rouet, Florence Syoen