Patents by Inventor Elif I. Gürbüz

Elif I. Gürbüz 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).

  • Production of levulinic acid, furfural, and gamma valerolactone from Cand Ccarbohydrates in mono- and biphasic systems using gamma-valerolactone as a solvent
    Patent number: 8399688
    Abstract: A method to make levulinic acid (LA), furfural, or gamma-valerolactone (GVL). React cellulose (and/or other C6 carbohydrates) or xylose (and/or other C5 carbohydrates) or combinations thereof in a monophasic reaction medium comprising GVL and an acid; or (ii) a biphasic reaction system comprising an organic layer comprising GVL, and a substantially immiscible aqueous layer. At least a portion of the cellulose (and/or other C6 carbohydrates), if present, is converted to LA and at least a portion of the xylose (and/or other C5 carbohydrates), if present, is converted into furfural.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: March 19, 2013
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: James A. Dumesic, David Martin Alonso, Elif I. Gürbüz, Stephanie G. Wettstein
  • PRODUCTION OF LEVULINIC ACID, FURFURAL, AND GAMMA VALEROLACTONE FROM C5 and C6 CARBOHYDRATES IN MONO- AND BIPHASIC SYSTEMS USING GAMMA- VALEROLACTONE AS A SOLVENT
    Publication number: 20120302767
    Abstract: A method to make levulinic acid (LA), furfural, or gamma-valerolactone (GVL). React cellulose (and/or other C6 carbohydrates) or xylose (and/or other C5 carbohydrates) or combinations thereof in a monophasic reaction medium comprising GVL and an acid; or (ii) a biphasic reaction system comprising an organic layer comprising GVL, and a substantially immiscible aqueous layer. At least a portion of the cellulose (and/or other C6 carbohydrates), if present, is converted to LA and at least a portion of the xylose (and/or other C5 carbohydrates), if present, is converted into furfural.
    Type: Application
    Filed: April 12, 2012
    Publication date: November 29, 2012
    Inventors: James A. Dumesic, David Martin Alonso, Elif I. Gürbüz, Stephanie G. Wettstein