Patents by Inventor Peter Stoessel

Peter Stoessel 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).

  • Cosmetic preparation containing chitosan
    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