Patents by Inventor Mario D. Torres-Cardona

Mario D. Torres-Cardona 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).

  • Method for producing esterified astaxanthin from esterified zeaxanthin
    Patent number: 7291749
    Abstract: A method is described for preparing astaxanthin esters from zeaxanthin by acylation of zeaxanthin with an acylating agent followed by contacting the esterified zeaxanthin with an oxidizing agent to produce esterified astaxanthin. The astaxanthin esters are more stable and show a better bioavailability than free astaxanthin when used in salmonid pigmentation.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: November 6, 2007
    Assignee: DSM IP Assets B.V.
    Inventors: Mario D. Torres-Cardona, Gustavo Rodriquez, George C. Schloemer
  • Process for the purification of marigold xanthophylls
    Patent number: 7150890
    Abstract: Description of a process to extract, saponify and purify lutein and zeaxantine contained in Marigold flowers free from any genetic manipulation, which have been harvested by hand and dried upon weather so that it neither contains epoxicarotenoids or cis-carotenoids. Fatty acids are removed as its metallic salts and carotenoids are recovered using a polar solvent.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: December 19, 2006
    Inventors: Jose Antonio Socla Rosales, M. C. Mario D. Torres Cardona
  • Method for producing esterified astaxanthin from esterified zeaxanthin
    Publication number: 20040158097
    Abstract: A method is described for preparing astaxanthin esters from zeaxanthin by acylation of zeaxanthin with an acylating agent followed by contacting the esterified zeaxanthin with an oxidizing agent to produce esterified astaxanthin. The astaxanthin esters are more stable and show a better bioavailability than free astaxanthin when used in salmonid pigmentation.
    Type: Application
    Filed: October 14, 2003
    Publication date: August 12, 2004
    Inventors: Mario D. Torres-Cardona, Gustavo Rodriguez, George C. Schloemer
  • Biological process for the elimination of sulphur compounds present in gas mixtures
    Patent number: 5236677
    Abstract: A continuous process for the microbiological conversion and removal of malodorous sulphur-containing organic and inorganic compounds from a gaseous stream, comprising the steps of providing a column filled with packing material. Passing a biologically active liquid stream containing nutrients and a consortia of bacteria including microorganisms of the Thiobacillaceae family through the column whereby the bacteria are immobilized onto all available surface area of the packing material. Maintaining the temperature conditions within the column between about 5.degree. C. to about 47.degree. C. and the pH conditions between about 5 to about 9. Concurrently passing a gaseous stream containing the malodorous sulphur-containing organic and inorganic compounds through the column at a liquid gas ratio of about 3:7 for a sufficient period of time to allow the bacteria to convert greater than about 97% of the sulphur compounds within the gaseous stream into a useful form of elemental sulphur.
    Type: Grant
    Filed: March 13, 1992
    Date of Patent: August 17, 1993
    Assignee: Grupo Cydsa S.A. de C.V.
    Inventors: Mario D. Torres-Cardona, Sergio Revah-Moiseev, Antonio Hinojosa-Martinez, Fernando J. Paez-Moreno, Victor M. Morales-Baca