Patents by Inventor Chengsong Liu

Chengsong 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).

  • Publication number: 20130344541
    Abstract: The present application provides genetically modified fungal organisms that produce enzyme mixtures exhibiting enhanced hydrolysis of cellulosic material to glucose, enzyme mixtures produced by the genetically modified fungal organisms, and processes for producing glucose from cellulose using such enzyme mixtures.
    Type: Application
    Filed: November 1, 2011
    Publication date: December 26, 2013
    Applicant: CODEXIS, INC.
    Inventors: Ish Kumar Dhawan, Dipnath Baidyaroy, Andrew Shaw, Oleh Tanchak, Christopher Hill, Chengsong Liu, Amala Chokshi, Brian R. Scott
  • Patent number: 8486683
    Abstract: Provided are modified beta-glucosidase enzymes, derived from the Trichoderma reesei Cel3A beta-glucosidase, that exhibit improvements in one or more kinetic parameters (KG, KG2, kcat) comprising amino acid substitutions at one or more of positions 43, 101, 260 and 543. Also provided are genetic constructs comprising nucleotide sequences encoding for modified beta-glucosidase enzymes, methods for the production of modified beta-glucosidase enzymes from host strains and the use of the modified beta-glucosidase enzymes in the hydrolysis of cellulose.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: July 16, 2013
    Assignee: Iogen Energy Corporation
    Inventors: Brian R. Scott, Chengsong Liu, James Lavigne, John J. Tomashek
  • Patent number: 8309328
    Abstract: The present application provides genetically modified fungal organisms that produce enzyme mixtures exhibiting enhanced hydrolysis of cellulosic material to glucose, enzyme mixtures produced by the genetically modified fungal organisms, and processes for producing glucose from cellulose using such enzyme mixtures.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: November 13, 2012
    Assignee: Codexis, Inc.
    Inventors: Ish Kumar Dhawan, Dipnath Baidyaroy, Andrew Shaw, Oleh Tanchak, Christopher Hill, Chengsong Liu, Amala Chokshi, Brian R. Scott
  • Publication number: 20120270278
    Abstract: The present application provides genetically modified fungal organisms that produce enzyme mixtures exhibiting enhanced hydrolysis of cellulosic material to glucose, enzyme mixtures produced by the genetically modified fungal organisms, and processes for producing glucose from cellulose using such enzyme mixtures.
    Type: Application
    Filed: July 2, 2012
    Publication date: October 25, 2012
    Applicant: CODEXIS, INC.
    Inventors: ISH KUMAR DHAWAN, DIPNATH BAIDYAROY, ANDREW SHAW, OLEH TANCHAK, CHRISTOPHER HILL, CHENGSONG LIU, AMALA CHOKSHI, BRIAN R. SCOTT
  • Patent number: 8236551
    Abstract: The present application provides genetically modified fungal organisms that produce enzyme mixtures exhibiting enhanced hydrolysis of cellulosic material to glucose, enzyme mixtures produced by the genetically modified fungal organisms, and processes for producing glucose from cellulose using such enzyme mixtures.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: August 7, 2012
    Assignee: Codexis, Inc.
    Inventors: Ish Kumar Dhawan, Dipnath Baidyaroy, Andrew Shaw, Oleh Tanchak, Christopher Hill, Chengsong Liu, Amala Chokshi, Brian R. Scott
  • Publication number: 20120107881
    Abstract: The present application provides genetically modified fungal organisms that produce enzyme mixtures exhibiting enhanced hydrolysis of cellulosic material to glucose, enzyme mixtures produced by the genetically modified fungal organisms, and processes for producing glucose from cellulose using such enzyme mixtures.
    Type: Application
    Filed: November 1, 2011
    Publication date: May 3, 2012
    Applicant: CODEXIS, INC.
    Inventors: Ish Kumar Dhawan, Dipnath Baidyaroy, Andrew Shaw, Oleh Tanchak, Christopher Hill, Chengsong Liu, Amala Chokshi, Brian R. Scott
  • Patent number: 8017361
    Abstract: Provided is an enzyme mixture for hydrolyzing a pretreated lignocellulosic feedstock to soluble sugars. The enzyme mixture comprises EG4 at a fractional concentration (fEG4) of about 0.25 to about 0.83 (w/w), Swollenin at a fractional concentration (fSwo1) of about 0 to about 0.66 (w/w), and Cip1 at a fractional concentration (fCip1) of 0 to about 0.33 measured relative to all accessory enzymes present in the enzyme mixture. Also provided are processes for converting a pretreated lignocellulosic feedstock to soluble sugars using the enzyme mixtures, and methods of using and producing such enzyme mixtures.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: September 13, 2011
    Assignee: Iogen Energy Corporation
    Inventors: Brian R. Scott, Christopher Hill, John Tomashek, Chengsong Liu
  • Publication number: 20100304438
    Abstract: Provided are modified beta-glucosidase enzymes, derived from the Trichoderma reesei Cel3A beta-glucosidase, that exhibit improvements in one or more kinetic parameters (KG, KG2, kcat) comprising amino acid substitutions at one or more of positions 43, 101, 260 and 543. Also provided are genetic constructs comprising nucleotide sequences encoding for modified beta-glucosidase enzymes, methods for the production of modified beta-glucosidase enzymes from host strains and the use of the modified beta-glucosidase enzymes in the hydrolysis of cellulose.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 2, 2010
    Applicant: Iogen Energy Corporation
    Inventors: Brian R. Scott, Chengsong Liu, James Lavigne, John J. Tomashek
  • Publication number: 20090061484
    Abstract: Provided is an enzyme mixture for hydrolyzing a pretreated lignocellulosic feedstock to soluble sugars. The enzyme mixture comprises EG4 at a fractional concentration (fEG4) of about 0.25 to about 0.83 (w/w), Swollenin at a fractional concentration (fSwo1) of about 0 to about 0.66 (w/w), and Cip1 at a fractional concentration (fCip1) of 0 to about 0.33 measured relative to all accessory enzymes present in the enzyme mixture. Also provided are processes for converting a pretreated lignocellulosic feedstock to soluble sugars using the enzyme mixtures, and methods of using and producing such enzyme mixtures.
    Type: Application
    Filed: August 29, 2008
    Publication date: March 5, 2009
    Applicant: IOGEN ENERGY CORPORATION
    Inventors: Brian R. Scott, Christopher Hill, John Tomashek, Chengsong Liu