Patents by Inventor Ranjini Chatterjee

Ranjini Chatterjee 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: 20130143304
    Abstract: The teachings provided herein are generally directed to a method of converting lignin-derived compounds to valuable aromatic chemicals using an enzymatic, bioconversion process. The teachings provide a selection of (i) host cells that are tolerant to the toxic compounds present in lignin fractions; (ii) polypeptides that can be used as enzymes in the bioconversion of the lignin fractions to the aromatic chemical products; (iii) polynucleotides that can be used to transform the host cells to express the selection of polypeptides as enzymes in the bioconversion of the lignin fractions; and (iv) the transformants that express the enzymes.
    Type: Application
    Filed: August 29, 2011
    Publication date: June 6, 2013
    Inventors: RANJINI CHATTERJEE, KENNETH ZAHN, KENNETH MITCHELL, YAOQUAN LIU
  • Publication number: 20120202258
    Abstract: The teachings provided herein are generally directed to a method of converting lignin-derived compounds to valuable aromatic chemicals using an enzymatic, bioconversion process. The teachings provide a selection of (i) host cells that are tolerant to the toxic compounds present in lignin fractions; (ii) polypeptides that can be used as enzymes in the bioconversion of the lignin fractions to the aromatic chemical products; (iii) polynucleotides that can be used to transform the host cells to express the selection of polypeptides as enzymes in the bioconversion of the lignin fractions; and (iv) the transformants that express the enzymes.
    Type: Application
    Filed: August 29, 2011
    Publication date: August 9, 2012
    Inventors: Ranjini Chatterjee, Kenneth Zahn, Kenneth Mitchell, Yaoquan Liu
  • Publication number: 20120202272
    Abstract: The teachings provided herein are generally directed to a method of converting lignin-derived compounds to valuable aromatic chemicals using an enzymatic, bioconversion process. The teachings provide a selection of (i) host cells that are tolerant to the toxic compounds present in lignin fractions; (ii) polypeptides that can be used as enzymes in the bioconversion of the lignin fractions to the aromatic chemical products; (iii) polynucleotides that can be used to transform the host cells to express the selection of polypeptides as enzymes in the bioconversion of the lignin fractions; and (iv) the transformants that express the enzymes.
    Type: Application
    Filed: August 29, 2011
    Publication date: August 9, 2012
    Inventors: Ranjini Chatterjee, Kenneth Zahn, Kenneth Mitchell, Yaoquan Liu
  • Publication number: 20120202257
    Abstract: The teachings provided herein are generally directed to a method of converting lignin-derived compounds to valuable aromatic chemicals using an enzymatic, bioconversion process. The teachings provide a selection of (i) host cells that are tolerant to the toxic compounds present in lignin fractions; (ii) polypeptides that can be used as enzymes in the bioconversion of the lignin fractions to the aromatic chemical products; (iii) polynucleotides that can be used to transform the host cells to express the selection of polypeptides as enzymes in the bioconversion of the lignin fractions; and (iv) the transformants that express the enzymes.
    Type: Application
    Filed: August 29, 2011
    Publication date: August 9, 2012
    Inventors: Ranjini Chatterjee, Kenneth Zahn, Kenneth Mitchell, Yaoquan Liu
  • Publication number: 20120196334
    Abstract: The teachings provided herein are generally directed to a method of converting lignin-derived compounds to valuable aromatic chemicals using an enzymatic, bioconversion process. The teachings provide a selection of (i) host cells that are tolerant to the toxic compounds present in lignin fractions; (ii) polypeptides that can be used as enzymes in the bioconversion of the lignin fractions to the aromatic chemical products; (iii) polynucleotides that can be used to transform the host cells to express the selection of polypeptides as enzymes in the bioconversion of the lignin fractions; and (iv) the transformants that express the enzymes.
    Type: Application
    Filed: August 29, 2011
    Publication date: August 2, 2012
    Inventors: Ranjini Chatterjee, Kenneth Zahn, Kenneth Mitchell, Yaoquan Liu
  • Publication number: 20120196335
    Abstract: The teachings provided herein are generally directed to a method of converting lignin-derived compounds to valuable aromatic chemicals using an enzymatic, bioconversion process. The teachings provide a selection of (i) host cells that are tolerant to the toxic compounds present in lignin fractions; (ii) polypeptides that can be used as enzymes in the bioconversion of the lignin fractions to the aromatic chemical products; (iii) polynucleotides that can be used to transform the host cells to express the selection of polypeptides as enzymes in the bioconversion of the lignin fractions; and (iv) the transformants that express the enzymes.
    Type: Application
    Filed: August 29, 2011
    Publication date: August 2, 2012
    Inventors: RANJINI CHATTERJEE, KENNETH ZAHN, KENNETH MITCHELL, YAOQUAN LIU
  • Publication number: 20120196353
    Abstract: The teachings provided herein are generally directed to a method of converting lignin-derived compounds to valuable aromatic chemicals using an enzymatic, bioconversion process. The teachings provide a selection of (i) host cells that are tolerant to the toxic compounds present in lignin fractions; (ii) polypeptides that can be used as enzymes in the bioconversion of the lignin fractions to the aromatic chemical products; (iii) polynucleotides that can be used to transform the host cells to express the selection of polypeptides as enzymes in the bioconversion of the lignin fractions; and (iv) the transformants that express the enzymes.
    Type: Application
    Filed: August 29, 2011
    Publication date: August 2, 2012
    Inventors: RANJINI CHATTERJEE, KENNETH ZAHN, KENNETH MITCHELL, YAOQUAN LIU
  • Publication number: 20120040437
    Abstract: The present disclosure relates generally to polypeptides having improved alanine 2,3-aminomutase (AAM) activity, the polynucleotides encoding the AAM polypeptides, and expression vectors and host cells for expressing the AAM polypeptides.
    Type: Application
    Filed: September 1, 2011
    Publication date: February 16, 2012
    Applicant: CODEXIS, INC.
    Inventors: Svetlana Balatskaya, Birthe Borup, Ranjini Chatterjee, Ish Dhawan, Richard J. Fox, Kenneth W. Mitchell, Emily C. Mundorff, Les Partridge, Matthew Tobin
  • Patent number: 8030051
    Abstract: The present disclosure relates generally to polypeptides having improved alanine 2,3-aminomutase (AAM) activity, the polynucleotides encoding the AAM polypeptides, and expression vectors and host cells for expressing the AAM polypeptides.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: October 4, 2011
    Assignee: Codexis, Inc.
    Inventors: Svetlana Balatskaya, Birthe Borup, Ranjini Chatterjee, Ish Dhawan, Richard J. Fox, Kenneth W. Mitchell, Emily C. Mundorff, Les Partridge, Matthew Tobin
  • Publication number: 20100248312
    Abstract: The present disclosure relates generally to polypeptides having improved alanine 2,3-aminomutase (AAM) activity, the polynucleotides encoding the AAM polypeptides, and expression vectors and host cells for expressing the AAM polypeptides.
    Type: Application
    Filed: October 16, 2006
    Publication date: September 30, 2010
    Applicant: Codexis, Inc.
    Inventors: Svetlana Balatskaya, Birthe Borup, Ranjini Chatterjee, Ish Dhawan, Richard J. Fox, Kenneth W. Mitchell, Emily C. Mundorff, Les Partridge, Matthew Tobin
  • Patent number: 7790432
    Abstract: The present invention is directed to polypeptides that have enhanced alanine 2,3-aminomutase (AAM) activity and/or thermostability relative to the wild-type enzymes that have incidental AAM activity as a result of cross reactivity with alanine. In addition, the present invention is directed to a polynucleotides that encodes for the AAM polypeptides of the present invention, to nucleic acid sequences comprising the polynucleotides, to expression vectors comprising the polynucleotides operatively linked to a promoter, to host cells transformed to express the AAM polypeptides, and to a method for producing the AAM polypeptides of the present invention.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: September 7, 2010
    Assignee: Codexis, Inc.
    Inventors: Ranjini Chatterjee, Kenneth W. Mitchell, Susan Y. Louie, Richard J. Fox, Michelle Chen
  • Patent number: 7745186
    Abstract: The present invention relates to novel ribulose-1,5-bisphosphate carboxylase/oxygenase polypeptides and the polynucleotides that encode them. The invention also provides related host cells and methods.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: June 29, 2010
    Assignee: Codexis, Inc.
    Inventors: Ranjini Chatterjee, Michelle M. Chen, Ranjan Patnaik, Stephen L. Schmidt
  • Publication number: 20100099143
    Abstract: The present invention is directed to polypeptides that have enhanced alanine 2,3-aminomutase (AAM) activity and/or thermostability relative to the wild-type enzymes that have incidental AAM activity as a result of cross reactivity with alanine. In addition, the present invention is directed to a polynucleotides that encodes for the AAM polypeptides of the present invention, to nucleic acid sequences comprising the polynucleotides, to expression vectors comprising the polynucleotides operatively linked to a promoter, to host cells transformed to express the AAM polypeptides, and to a method for producing the AAM polypeptides of the present invention.
    Type: Application
    Filed: October 25, 2005
    Publication date: April 22, 2010
    Inventors: Ranjini Chatterjee, Kenneth W. Mitchell, Susan Y. Louie, Richard J. Fox, Michelle Chen
  • Patent number: 7611897
    Abstract: New fumonisin detoxifying or fumonisin-derivative detoxifying homologues (both nucleic acids and proteins) are provided. Compositions which include these new proteins, recombinant cells, antibodies to the new homologues, and methods of using the homologues are also provided.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: November 3, 2009
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Ranjini Chatterjee, Jonathan P. Duvick, James English
  • Publication number: 20090162895
    Abstract: The present invention relates to novel ribulose-1,5-bisphosphate carboxylase/oxygenase polypeptides and the polynucleotides that encode them. The invention also provides related host cells and methods.
    Type: Application
    Filed: March 17, 2008
    Publication date: June 25, 2009
    Applicant: Codexis, Inc.
    Inventors: Ranjini CHATTERJEE, Michelle M. Chen, Ranjan Patnaik, Stephen L. Schmidt
  • Patent number: 7351562
    Abstract: The present invention relates to novel ribulose-1,5-bisphosphate carboxylase/oxygenase polypeptides and the polynucleotides that encode them. The invention also provides related host cells and methods.
    Type: Grant
    Filed: April 28, 2003
    Date of Patent: April 1, 2008
    Assignee: Codexis, Inc.
    Inventors: Ranjini Chatterjee, Michelle M. Chen, Ranjan Patnaik, Stephen L. Schmidt
  • Publication number: 20050050586
    Abstract: New fumonisin detoxifying or fumonisin-derivative detoxifying homologues (both nucleic acids and proteins) are provided. Compositions which include these new proteins, recombinant cells, antibodies to the new homologues, and methods of using the homologues are also provided.
    Type: Application
    Filed: June 21, 2004
    Publication date: March 3, 2005
    Inventors: Ranjini Chatterjee, Jonathan Duvick, James English
  • Publication number: 20040038262
    Abstract: The present invention relates to novel ribulose-1,5-bisphosphate carboxylase/oxygenase polypeptides and the polynucleotides that encode them. The invention also provides related host cells and methods.
    Type: Application
    Filed: April 28, 2003
    Publication date: February 26, 2004
    Inventors: Ranjini Chatterjee, Michelle M. Chen, Ranjan Patnaik, Stephen L. Schmidt
  • Publication number: 20030056245
    Abstract: New fumonisin detoxifying or fumonisin-derivative detoxifying homologues (both nucleic acids and proteins) are provided. Compositions which include these new proteins, recombinant cells, antibodies to the new homologues, and methods of using the homologues are also provided.
    Type: Application
    Filed: February 6, 2002
    Publication date: March 20, 2003
    Applicant: Maxygen, Inc.
    Inventors: Ranjini Chatterjee, Jonathan P. Duvick, James English
  • Patent number: 6159738
    Abstract: A fermentation process for producing succinic acid is provided comprising selecting a bacterial strain that does not produce succinic acid in high yield, disrupting the normal regulation of sugar metabolism of said bacterial strain, and combining the mutant bacterial strain and selected sugar in anaerobic conditions to facilitate production of succinic acid. Also provided is a method for changing low yield succinic acid producing bacteria to high yield succinic acid producing bacteria comprising selecting a bacterial strain having a phosphotransferase system and altering the phosphotransferase system so as to allow the bacterial strain to simultaneously metabolize different sugars.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: December 12, 2000
    Assignee: University of Chicago
    Inventors: Mark I. Donnelly, Cynthia Sanville-Millard, Ranjini Chatterjee