Patents by Inventor Zonglin L. Liu

Zonglin L. Liu 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).

  • Yeast strains and method for lignocellulose to ethanol production
    Patent number: 9102931
    Abstract: Disclosed is a method to incorporate xylose transport related genes into a yeast strain for lignocelluloses to ethanol production. More specifically, the invention relates to novel Saccharomyces cerevisiae strains NRRL Y-50463 and yeast strains having novel xylose transporter genes, the genes deposited as GenBank JF343555, GenBank JF343556, GenBank JF343557, GenBank JF343558, and GenBank JF343559. The yeast strains having said genes are deposited as Y-50465, Y-50466, Y-50746, Y-50747, Y-50748, and Y-50749.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: August 11, 2015
    Assignee: The United States of America, as represented by the Secretary of Agriculture
    Inventors: Zonglin L. Liu, Jaewoong Moon, Patricia J. Slininger, Menggen Ma
  • Inhibitor tolerant strain
    Patent number: 8999701
    Abstract: Furfural and 5-hydroxymethylfurfural (HMF) are representative inhibitors to ethanologenic yeast generated from biomass pretreatment using dilute acid hydrolysis. Few yeast strains tolerant to inhibitors are available. A novel tolerant strain of Saccharomyces cerevisiae, NRRL Y-50049, having enhanced biotransformation ability to convert furfural to furan methanol (FM), HMF to furan di-methanol (FDM), and is able to produce a normal yield of ethanol as an initial culture.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: April 7, 2015
    Assignee: The United States of America, as represented by the Secretary of Agriculture
    Inventor: Zonglin L. Liu
  • spp. strain
    Patent number: 8673604
    Abstract: Disclosed is a novel Clavispora spp. yeast strain, NRRL Y-50464, that produces ethanol. More specifically, the yeast strain is able to utilize cellobiose as a sole carbon source and produce native ?-glucosidase enzyme activity under a one-step simultaneous saccharification and fermentation of cellulose to ethanol.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: March 18, 2014
    Assignee: The United States of America, as represented by the Secretary of Agriculture
    Inventors: Zonglin L. Liu, Scott A. Weber
  • Inhibitor Tolerant Saccharomyces Cerevisiae Strain
    Publication number: 20090004726
    Abstract: Furfural and 5-hydroxymethylfurfural (HMF) are representative inhibitors to ethanologenic yeast generated from biomass pretreatment using dilute acid hydrolysis. Few yeast strains tolerant to inhibitors are available. A novel tolerant strain of Saccharomyces cerevisiae, NRRL Y-50049, having enhanced biotransformation ability to convert furfural to furan methanol (FM), HMF to furan di-methanol (FDM), and is able to produce a normal yield of ethanol as an initial culture.
    Type: Application
    Filed: June 23, 2008
    Publication date: January 1, 2009
    Applicant: The United States of America, as represented by the Secretary of Agriculture
    Inventor: Zonglin L. Liu