Patents by Inventor Yves Kennel

Yves Kennel 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).

  • Production of heteroplysaccharide biopolymers with xanthomonas in oil-in-water emulsion
    Patent number: 5756317
    Abstract: Heteropolysaccharide biopolymers well adopted as thickening agents are improvedly produced by microbially fermenting a carbohydrate nutrient medium, said nutrient medium comprising an oil-in-water emulsion of a discontinuous oily phase dispersed within a continuous aqueous phase.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: May 26, 1998
    Assignee: Rhone-Poulenc Specialities Chimiques
    Inventors: Veronique Leproux, Michel Peignier, Patrick Cros, Jeanine Beucherie, Yves Kennel
  • 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