Patents by Inventor Marie-Claude Perrenoud Ferreira

Marie-Claude Perrenoud Ferreira 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).

  • Concentrate of polyunsaturated fatty acid ethyl esters and preparation thereof
    Patent number: 5679809
    Abstract: A composition concentrated in ethyl esters of polyunsaturated fatty acids is prepared by mixing a refined oil rich in polyunsaturated fatty acids with ethanol in the presence of a catalyst to obtain an ethanolyzate containing a glycerol phase and fatty acid ethyl ester phase. The fatty acid ethyl ester phase is separated from the glycerol phase and mixed with urea and ethanol to form a mixture, which is cooled to form a liquid phase containing fatty acid ethyl esters and a solid phase containing insoluble inclusion complexes. The liquid phase is separated from the solid phase to obtain a fraction enriched in ethyl esters of polyunsaturated fatty acids.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: October 21, 1997
    Assignee: Nestec S.A.
    Inventors: Constantin Bertoli, Rene Fumeaux, Marie-Claude Perrenoud Ferreira, Junkuan Wang