Patents by Inventor Jean-Louis Viret

Jean-Louis Viret 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).

  • Patent number: 5505959
    Abstract: A pharmaceutical delivery system includes a dispenser pack containing a pharmaceutical composition. The composition includes a pharmaceutical active principle homogeneously distributed in a water-dispersible gel excipient containing an acrylamide or acrylamidine gelling agent.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: April 9, 1996
    Assignee: Nestec S.A.
    Inventors: Pierre Tachon, Beatrice Vagneur, Jean-Louis Viret
  • Patent number: 5474775
    Abstract: Cosmetic compositions in the form of oil-in-water emulsions, water-in-oil emulsions and anhydrous formulations have fatty phases which contain fatty acid diesters of 2,3-butanediol.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: December 12, 1995
    Assignee: Nestec S.A.
    Inventors: Helmut Traitler, Jean-Louis Viret
  • Patent number: 5318777
    Abstract: A sal fat fraction is obtained by dissolving sal fat in hexane at a temperature above 20.degree. C. and cooling the solution to 5.degree. C. to 12.degree. C. The cooled solution is seeded with 0.05% to 0.5% by weight sal stearin and then cooled to a temperature below -5.degree. C. A solid fraction is removed from the solution and hexane is removed from the liquid fraction to obtain a sal fat fraction which has a solid fat content at 20.degree. C. of 0% by weight and a solid fat content at 10.degree. C. below 4.5% by weight.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: June 7, 1994
    Assignee: Nestec S.A.
    Inventors: Line Mottier, Jean-Louis Viret, Hans-Juergen Wille
  • Patent number: 5300302
    Abstract: A pharmaceutical active principle delivery system has a pharmaceutical active principle contained in solution or solid form in an excipient gel formed with gelling agents which provide for a pseudoplastic and more or less thixotropic water-dispersible gel which may be packed in a dispenser having a metering pump for delivering therapeutic doses of the composition.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: April 5, 1994
    Assignee: Nestec S.A.
    Inventors: Pierre Tachon, Beatrice Vagneur, Jean-Louis Viret
  • Patent number: 5057542
    Abstract: Chitosan in a form of a polymer having a molecular weight of from 3,000 to 700,000 is incorporated into a cosmetic preparation in an amount effective for inhibiting growth of microorganisms in the cosmetic preparation.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: October 15, 1991
    Assignee: Nestec S.A.
    Inventors: Jean-Louis Leuba, Harriet Link, Peter Stoessel, Jean-Louis Viret
  • Patent number: 4352746
    Abstract: The invention relates to a process for the production of a fraction containing oxidation-inhibiting substances from a vegetable material rich in these substances, to the fraction thus obtained and to its use for stabilizing food and cosmetic products against oxidation. The process is characterized in that the previously ground vegetable material or an extract of this vegetable material obtained with a light solvent, a distillation vehicle and an oil are mixed, the suspension is subjected to molecular distillation and a condensate containing the oxidation-inhibiting principles, the distillation vehicle and some of the oil used is collected.
    Type: Grant
    Filed: July 15, 1981
    Date of Patent: October 5, 1982
    Assignee: Societe d'Assistance Technique Pour Produits Nestle S.A.
    Inventors: Umberto Bracco, Jean-Louis Viret, Josef Rehacek
  • Patent number: 4333959
    Abstract: A process of reducing the amount of cholesterol in egg-yolk which comprises reducing the pH of fresh wet egg-yolk to destabilize the emulsion, treating the destabilized emulsion with an edible oil to form a fine dispersion and centrifuging the dispersion to separate the egg-yolk phase from the oil-phase.
    Type: Grant
    Filed: September 26, 1980
    Date of Patent: June 8, 1982
    Assignee: Societe d'Assistance Technique pour Produits Nestle S.A.
    Inventors: Umberto Bracco, Jean-Louis Viret