Patents by Inventor Jay Hyung Lee

Jay Hyung Lee 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).

  • Patent number: 9631057
    Abstract: In one embodiment the instant invention generally pertains to a method for producing glucose for fermentation. The method comprises first treating a biomass with acid and heat under conditions sufficient to produce a composition mixture comprising cellulose suitable for enzymatic hydrolysis. Next, at least a portion of the cellulose of step (a) is enzymatically hydrolyzed under conditions sufficient to form a composition comprising glucose. The glucose is then fermented. Advantageously, one or more reaction conditions are more efficient because they are selected by first measuring an initial hydrolysis rate of said biomass and then selecting one or more appropriate reaction conditions based upon said initial hydrolysis rate.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: April 25, 2017
    Assignees: Texaco Inc., Georgia Tech Research Corporation
    Inventors: Matthew James Realff, Ronald W. Smith, Prabuddha Bansal, Andreas Sebastian Bommarius, Melanie Hall, Jay Hyung Lee
  • Patent number: 8506717
    Abstract: The present invention is a process for treating a feedstock comprising holocellulose. The process comprises mixing the feedstock with a solution comprising cellulose binding domains to form a mixture. The mixture is then subjected to conditions sufficient to reduce the crystallinity of holocellulose. Subsequent enzymatic hydrolysis may show an improved rate and/or fermentable sugar yield as compared to processes which do not employ the process.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: August 13, 2013
    Assignee: Georgia Tech Research Corporation
    Inventors: Prabuddha Bansal, Andreas Sebatian Bommarius, Melanie Hall, Jay Hyung Lee
  • Publication number: 20120315674
    Abstract: In one embodiment the instant invention generally pertains to a method for producing glucose for fermentation. The method comprises first treating a biomass comprising a lignocellulosic material with a mixture comprising SO2 and steam at reaction conditions sufficient to produce a composition mixture comprising cellulose suitable for enzymatic hydrolysis. Specifically, the temperature, residence time, and SO2 concentration may be selected by calculating a crystallinity index (CrI) of the biomass and using the calculated crystallinity index as an indicator of enzymatic hydrolysis rate. In this manner cellulose may be enzymatically hydrolyzed glucose for aerobic or anaerobic fermentation.
    Type: Application
    Filed: December 22, 2011
    Publication date: December 13, 2012
    Applicant: GEORGIA TECH RESEARCH CORPORATION
    Inventors: Matthew James REALFF, Ronald W. Smith, Prabuddha Bansal, Andreas Sebastian Bommarius, Melanie Hall, Jay Hyung Lee
  • Publication number: 20110247609
    Abstract: The present invention is a process for treating a feedstock comprising holocellulose. The process comprises mixing the feedstock with a solution comprising cellulose binding domains to form a mixture. The mixture is then subjected to conditions sufficient to reduce the crystallinity of holocellulose. Subsequent enzymatic hydrolysis may show an improved rate and/or fermentable sugar yield as compared to processes which do not employ the process.
    Type: Application
    Filed: December 3, 2010
    Publication date: October 13, 2011
    Applicant: Georgia Tech Research Corporation
    Inventors: Prabuddha Bansal, Andreas Sebastian Bommarius, Melanie Hall, Jay Hyung Lee
  • Publication number: 20110244499
    Abstract: In one embodiment the instant invention generally pertains to a method for producing glucose for fermentation. The method comprises first treating a biomass with acid and heat under conditions sufficient to produce a composition mixture comprising cellulose suitable for enzymatic hydrolysis. Next, at least a portion of the cellulose of step (a) is enzymatically hydrolyzed under conditions sufficient to form a composition comprising glucose. The glucose is then fermented. Advantageously, one or more reaction conditions are more efficient because they are selected by first measuring an initial hydrolysis rate of said biomass and then selecting one or more appropriate reaction conditions based upon said initial hydrolysis rate.
    Type: Application
    Filed: November 9, 2010
    Publication date: October 6, 2011
    Applicants: Georgia Tech Research Corporation, Texaco Inc.
    Inventors: Matthew James Realff, Ronald W. Smith, Prabuddha Bansal, Andreas Sebastian Bommarius, Melanie Hall, Jay Hyung Lee