Patents by Inventor Jean-Pierre Gozard

Jean-Pierre Gozard 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).

  • Enzymatic treatment of solutions of polysaccharide biopolymers
    Patent number: 4775632
    Abstract: Aqueous solutions of polysaccharide biopolymers, e.g., Xanthomonas/carbohydrate fermentation worts, are treated with mutanase-containing enzymes to improve the filterability and injectability thereof, and are well adapted, e.g., for secondary and tertiary hydrocarbon (petroleum) recovery by waterflooding therewith.
    Type: Grant
    Filed: August 30, 1984
    Date of Patent: October 4, 1988
    Assignee: Rhone-Poulenc Specialites Chimiques
    Inventors: Jean-Pierre Gozard, Alain Jarry, Alain Luccioni
  • Defined heat treatment, under acidic conditions, of solutions of polysaccharide biopolymers
    Patent number: 4667026
    Abstract: Aqueous solutions of polysaccharide biopolymers, e.g., Xanthomonas/carbohydrate fermentation worts, are heat treated for more than 5, but less than 60 minutes, at a pH ranging from 3.5 to 6.2, to improve the viscosifying, filterability and injectability properties thereof, and are well adapted, e.g., for secondary and tertiary hydrocarbon (petroleum) recovery by waterflooding therewith.
    Type: Grant
    Filed: August 30, 1984
    Date of Patent: May 19, 1987
    Assignee: Rhone-Poulenc Specialites Chimiques
    Inventors: Alain Jarry, Jean-Pierre Gozard, Yves Kennel, Alain Luccioni