Patents by Inventor Juan-Roberto Elizondo-Mireles

Juan-Roberto Elizondo-Mireles 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 to obtain xanthophyll concentrates of high purity
    Patent number: 6504067
    Abstract: An industrial process to obtain xanthophyll concentrates of high purity from plant extracts, comprising: refining the plant extracts by treating them with a diluted alkali, followed by treating them with a diluted organic or inorganic acid in order to eliminate impurities and undesirable components and obtaining a refined extract; saponifying the refined extract by means of a strongly alkali aqueous solution; treating the diluted saponified mass with a dilute organic or inorganic acid to adjust the pH to a value from 4 to 7, in order to separate a xanthophylls concentrate; and removing any remaining impurities by extracting them by means of hexane.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: January 7, 2003
    Assignee: Industrial Organica S.A. DE C.V.
    Inventors: Ricardo Montoya-Olvera, Juan-Roberto Elizondo-Mireles, Carlos-Javier Torres-Gómez, José-Odon Torres-Quiroga