Patents by Inventor Sylviane Dumas

Sylviane Dumas 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).

  • Fluorinated gelatin and process for its preparation
    Patent number: 5087694
    Abstract: The present invention relates to modified gelatin containing polyfluorinated substituents grafted on to the protein chain.It further relates to the process for the preparation of this modified gelatin, which consists in reacting a polyfluorinated derivative containing a group capable of reacting with the OH or NH.sub.2 groups of the gelatin in aqueous solution.Application: photographic film preparations.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: February 11, 1992
    Assignee: Sanofi
    Inventors: Sylviane Dumas, Georges Takerkart