Patents by Inventor Brian R. Scott

Brian R. Scott 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: 9279112
    Abstract: Provided are modified cellulase enzymes exhibiting increase cellulose-hydrolyzing activity in the presence of lignin and/or reduced binding to lignin comprising modified linker peptides comprising one or more amino acid substitutions, insertions, or deletions that result in (a) a decrease in the calculated isoelectric point of the linker peptide and/or (b) an increase in the ratio of threonine:serine in the linker peptide relative to a parental linker peptide from which said modified linker peptide is derived. Also provided are genetic constructs comprising nucleic acid sequences encoding for modified cellulase enzymes, methods for the production of the modified cellulase enzymes from host strains and a process for hydrolyzing cellulose with the modified cellulases in the presence of lignin.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: March 8, 2016
    Assignee: IOGEN ENERGY CORPORATION
    Inventors: Brian R. Scott, Patrick St-Pierre, James Lavigne, Nabil Masri, Theresa C. White, John J. Tomashek
  • Patent number: 9206406
    Abstract: Provided is a modified Family 1 carbohydrate binding module (CBM) comprising amino acid substitutions at one or more of positions 10, 11, 12, 14, 17, 21, 24, 29, 31, 33, and 37, said position determined from alignment of a Family 1 CBM amino acid sequence with SEQ ID NO: 30, and exhibiting from about 50% to about 99.9% amino acid sequence identity to SEQ ID NO: 30. Also provided are modified glycosidase enzymes comprising the modified Family 1 CBM, genetic constructs and genetically modified microbes for expressing the modified Family 1 CBM or modified glycosidase enzyme. The modified Family 1 CBM confers reduced lignin binding and/or increased hydrolyzing activity in the presence of lignin to the modified glycosidase enzyme, which may be used in a process for hydrolyzing cellulose or hemicellulose in the presence of lignin.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: December 8, 2015
    Assignee: IOGEN ENERGY CORPORATION
    Inventors: John J. Tomashek, Brian R. Scott, Daniel Kolczynski
  • Publication number: 20140356914
    Abstract: The present invention provides endoglucanase 1b (EG1b) suitable for use in saccharification reactions.
    Type: Application
    Filed: August 27, 2012
    Publication date: December 4, 2014
    Applicant: Codexis, Inc.
    Inventors: Kripa Rao, Xiyun Zhang, Brian R. Scott, John J. Tomashek
  • 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
  • Publication number: 20120295308
    Abstract: Provided is a modified Family 1 carbohydrate binding module (CBM) comprising amino acid substitutions at one or more of positions 10, 11, 12, 14, 17, 21, 24, 29, 31, 33, and 37, said position determined from alignment of a Family 1 CBM amino acid sequence with SEQ ID NO: 30, and exhibiting from about 50% to about 99.9% amino acid sequence identity to SEQ ID NO: 30. Also provided are modified glycosidase enzymes comprising the modified Family 1 CBM, genetic constructs and genetically modified microbes for expressing the modified Family 1 CBM or modified glycosidase enzyme. The modified Family 1 CBM confers reduced lignin binding and/or increased hydrolysing activity in the presence of lignin to the modified glycosidase enzyme, which may be used in a process for hydrolysing cellulose or hemicellulose in the presence of lignin.
    Type: Application
    Filed: February 11, 2011
    Publication date: November 22, 2012
    Applicant: IOGEN ENEGY CORPORATION
    Inventors: John J. Tomashek, Brian R. Scott, Daniel Kolczynski
  • 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: 8110389
    Abstract: A modified Trichoderma reesei Family 6 (TrCel6A) cellulase enzyme comprising amino acid substitutions at one or more positions selected from the group consisting of 129, 322, 363 and 410 of SEQ ID NO: 1 is provided. Genetic constructs and genetically modified microbes comprising nucleic sequences encoding the modified TrCel6a cellulase are also provided. The modified TrCel6A cellulase of the invention display at least a 15% decrease in inactivation by lignin relative to a parental TrCel6A cellulase from which the modified TrCel6A is derived. Such cellulases find use in a variety of applications in industry requiring enzymatic hydrolysis of cellulose in the presence of lignin, e.g., the hydrolysis of pretreated lignocellulosic feedstocks for the production of fermentable sugars, sugar alcohols and fuel alcohols.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: February 7, 2012
    Assignee: Iogen Energy Corporation
    Inventors: James A. Lavigne, Brian R. Scott, Martine Whissel, John J. Tomashek
  • 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: 20100221778
    Abstract: Provided are modified cellulase enzymes exhibiting increase cellulose-hydrolyzing activity in the presence of lignin and/or reduced binding to lignin comprising modified linker peptides comprising one or more amino acid substitutions, insertions, or deletions that result in (a) a decrease in the calculated isoelectric point of the linker peptide and/or (b) an increase in the ratio of threonine:serine in the linker peptide relative to a parental linker peptide from which said modified linker peptide is derived. Also provided are genetic constructs comprising nucleic acidsequences encoding for modified cellulase enzymes, methods for the production of the modified cellulase enzymes from host strains and a process for hydrolysing cellulose with the modified cellulases in the presence of lignin.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 2, 2010
    Applicant: IOGEN ENERGY CORPORATION
    Inventors: Brian R. Scott, Patrick St-Pierre, James Lavigne, Nabil Masri, Theresa C. White, John J. Tomashek
  • Patent number: 7703375
    Abstract: A composite armor 10 is provided with a cellular structure 12 having a plurality of composite inserts 14 arranged in openings 20 provided in the cellular structure 12. A pair of laminate sheets are arranged on oppositely facing sides of the cellular structure 12 and covering the inserts 14. The laminate sheets 26 and 28 are bonded to the structure 12 and the inserts 14 by an adhesive. The cellular structure 12 includes a plurality of fibers extending continuously throughout the cellular structure 12.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: April 27, 2010
    Assignee: Lawrence Technological University
    Inventors: Brian R. Scott, Nabil F. Grace
  • Publication number: 20100089228
    Abstract: A composite armor 10 is provided with a cellular structure 12 having a plurality of composite inserts 14 arranged in openings 20 provided in the cellular structure 12. A pair of laminate sheets are arranged on oppositely facing sides of the cellular structure 12 and covering the inserts 14. The laminate sheets 26 and 28 are bonded to the structure 12 and the inserts 14 by an adhesive. The cellular structure 12 includes a plurality of fibers extending continuously throughout the cellular structure 12.
    Type: Application
    Filed: August 15, 2006
    Publication date: April 15, 2010
    Inventors: Brian R. Scott, Nabil F. Grace
  • Publication number: 20100041100
    Abstract: A modified Trichoderma reesei Family 6 (TrCel6A) cellulase enzyme comprising amino acid substitutions at one or more positions selected from the group consisting of 129, 322, 363 and 410 of SEQ ID NO: 1 is provided. Genetic constructs and genetically modified microbes comprising nucleic sequences encoding the modified TrCel6a cellulase are also provided. The modified TrCel6A cellulase of the invention display at least a 15% decrease in inactivation by lignin relative to a parental TrCel6A cellulase from which the modified TrCel6A is derived. Such cellulases find use in a variety of applications in industry requiring enzymatic hydrolysis of cellulose in the presence of lignin, e.g., the hydrolysis of pretreated lignocellulosic feedstocks for the production of fermentable sugars, sugar alcohols and fuel alcohols.
    Type: Application
    Filed: July 30, 2009
    Publication date: February 18, 2010
    Applicant: IOGEN ENERGY CORPORATION
    Inventors: James A. Lavigne, Brian R. Scott, Martine Whissel, 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