Patents by Inventor Mildred De Bloos De Clercq

Mildred De Bloos De Clercq 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).

  • Process for preparing carotenoid pigments
    Patent number: 5998678
    Abstract: A process for the preparation of the carotenoid Zeaxanthin by isomerization and optional hydrolysis of a carotenoid precursor with an alkaline reagent in a polar organic solvent selected from the group consisting of an ether, polyhydroxyl alcohol, an ether-alcohol or a combination thereof. Also disclosed is a method of improving the pigment power of an oleoresin or vegetable extract by isomerizing and optionally simutanously saponifying the optically active carotenoids found therein by the action of an alkaline reagent in an organic medium; oxidizing the resulting optically active dihydroxycarotene and; reducing the resulting optically active keto product to generate the 3,3' dihydroxycarotenoid as a racemic mixture.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: December 7, 1999
    Assignee: Investigaciones Quimicas y Farmaceutics, S.A.
    Inventors: Nuria Sanroma Virgili, Joan Carles Ferrater Martorell, Mildred De Bloos De Clercq, Juan A. Fernandez Martin