Patents by Inventor Ricardo Roman Cordero Otero

Ricardo Roman Cordero Otero 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).

  • Recombinant yeast for lignocellulose raw materials
    Patent number: 7531348
    Abstract: The present invention relates to a method for obtaining a recombinant yeast of Saccharomyces cerevisiae, which ferments lignocellulose raw materials to ethanol, including introducing DNA into a yeast so as to cause the yeast to have introduced genes encoding xylose reductase, xylitol dehydrogenase and xylulokinase.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: May 12, 2009
    Assignee: Scandinavian Technology Group AB
    Inventors: Ricardo Roman Cordero Otero, Bärbel Hahn-Hägerdal, Willhem Herber Van Zyl
  • Recombinant yeast for lignocellulose raw materials
    Publication number: 20030157675
    Abstract: The present invention relates to a method for obtaining a recombinant yeast of Saccharomyces cerevisiae, which ferments lignocellulose raw materials to ethanol, including introducing DNA into a yeast so as to cause the yeast to have introduced genes encoding xylose reductase, xylitol dehydrogenase and xylulokinase.
    Type: Application
    Filed: November 14, 2002
    Publication date: August 21, 2003
    Inventors: Ricardo Roman Cordero Otero, Barbel Hahn-Hagerdal, Willem Heber Van Zyl
  • Xylose isomerase with improved properties
    Patent number: 6475768
    Abstract: The present invention relates to novel nucleic acid sequences which, upon expression in a procaryotic or eucaryotic cell, code for a polypeptide having an elevated specific xylose isomerase activity compared to the wildtype Thermus thermophilus xylose isomerase. They are selected from a) nucleic acid sequences shown in SEQ. ID. No 1; b) the complementary strand of the sequence defined in (a) above; c) nucleic acid sequences which hybridize to the sequences defined in (a) or (b) above; d) nucleic acid sequences which, but for the degeneracy of the genetic code, would hybridize to the sequences defined in (a), (b) or (c) above and which code for the same polypeptide as those defined in (a), (b) or (c) above. The present invention further provides a process of producing ethanol from xylose containing materials comprising contacting cells that express such nucleic acid sequences and novel modified xylose isomerases that advantageously can be applied in the production of fructose syrups.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: November 5, 2002
    Assignee: Forskarpatent I Syd AB
    Inventors: Ricardo Román Cordero Otero, Márk Gárdonyi, Bärbel Hahn-Hägerdal, Willem Heber van Zyl, Eva Anna Viktoria Dackehag