Patents by Inventor Tatyana Viktorovna Leonova

Tatyana Viktorovna Leonova 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).

  • METHOD FOR PRODUCING AN L-AMINO ACID USING BACTERIUM OF THE ENTEROBACTERIACEAE FAMILY WITH ATTENUATED EXPRESSION OF A GENE CODING FOR SMALL RNA
    Publication number: 20090098621
    Abstract: The present invention provides a method for producing an L-amino acid using a bacterium of the Enterobacteriaceae family, particularly a bacterium belonging to genus Escherichia or Pantoea, which has been modified to attenuate expression of a gene coding for sRNA.
    Type: Application
    Filed: September 18, 2008
    Publication date: April 16, 2009
    Inventors: Konstantin Vyacheslavovich Rybak, Aleksandra Yurievna Skorokhodova, Elvira Borisovna Voroshilova, Mikhail Markovich Gusyatiner, Tatyana Viktorovna Leonova, Yury Ivanovich Kozlov, Takuji Ueda, Vitaly Grigorievich Paraskevov
  • Method for Producing an L-Amino Acid Using a Bacterium of the Enterobacteriaceae Family Having Expression of the bolA Gene Attenuated
    Publication number: 20090081738
    Abstract: The present invention provides a method for producing an L-amino acid using a bacterium of the Enterobacteriaceae family, particularly a bacterium belonging to the genus Escherichia or Pantoea, which has been modified to attenuate expression of the bolA gene.
    Type: Application
    Filed: July 31, 2007
    Publication date: March 26, 2009
    Inventors: Dmitriy Vladimirovich Filippov, Elvira Borisovna Voroshilova, Tatyana Viktorovna Leonova, Yuri Ivanovich Kozlov, Vitaly Grigorievich Paraskevov
  • Bacterium having ability to produce L-glutamic acid, L-proline or L-arginine and method for producing L-glutamic acid, L-proline or L-arginine
    Patent number: 7491519
    Abstract: L-Glutamic acid, L-proline or L-arginine is produced by culturing a bacterium belonging to the genus Escherichia, which is L-isoleucine auxotrophic and has ability to produce L-glutamic acid, L-proline or L-arginine, in a medium containing L-isoleucine, to produce and accumulate L-glutamic acid, L-proline or L-arginine in a culture, and collecting L-glutamic acid, L-proline or L-arginine from the culture.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: February 17, 2009
    Assignee: Ajinomoto Co., Inc.
    Inventors: Maria Grigorievna Lunts, Svetlana Aleksandrovna Fomina, Tatyana Viktorovna Leonova, Mikhail Markovich Gusyatiner
  • Method for producing L-amino acid using bacterium of family having expression of gene attenuated
    Patent number: 7381548
    Abstract: The present invention provides a method for producing an L-amino acid using a bacterium of the Enterobacteriaceae family, particularly a bacterium belonging to genus Escherichia or Pantoea, which has been modified to attenuate expression of the yafA gene.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: June 3, 2008
    Assignee: Ajinomoto Co., Inc.
    Inventors: Marina Evgenievna Sheremet'eva, Konstantin Vyacheslavovich Rybak, Tatyana Viktorovna Leonova, Elvira Borisovna Voroshilova, Yury Ivanovich Kozlov
  • Mutant -acetylglutamate synthase and method for L-arginine production
    Patent number: 7169586
    Abstract: L-arginine is produced using a bacterium belonging to the genus Escherichia harboring a mutant N-acetylglutamate synthase in which the amino acid sequence corresponding to positions from 15 to 19 in a wild type N-acetylglutamate synthase is replaced with any one of amino acid sequences of SEQ ID NOS: 1 to 4, and feedback inhibition by L-arginine is desensitized.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: January 30, 2007
    Assignee: Ajinomoto Co., Inc.
    Inventors: Leonid Romanovich Ptitsyn, Irina Borisovna Altman, Sergey Vasil'evich Smirnov, Yulia Georgievna Rostova, Tatyana Abramovna Yampolskaya, Tatyana Viktorovna Leonova, Mikhail Markovich Gusyatiner
  • L-arginine producing and method of producing L-arginine
    Patent number: 7052884
    Abstract: Arginine can be efficiently produced by cultivating Escherichia coli which has an ability to produce arginine and an ability to utilize acetate in a culture medium to produce and accumulate arginine in the medium, and collecting arginine from the medium.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: May 30, 2006
    Assignee: Ajinomoto Co., Inc.
    Inventors: Mikhail Markovich Gusyatiner, Tatyana Viktorovna Leonova, Leonid Romanovich Ptitsyn, Tatyana Abramovna Yampolskaya
  • Bacterium having ability to produce L-glutamic acid, L-proline or L-arginine and method for producing L-glutamic acid, L-proline or L-arginine
    Patent number: 6984514
    Abstract: L-Glutamic acid, L-proline or L-arginine is produced by culturing a bacterium belonging to the genus Escherichia, which is L-isoleucine auxotrophic and has ability to produce L-glutamic acid, L-proline or L-arginine, in a medium containing L-isoleucine, to produce and accumulate L-glutamic acid, L-proline or L-arginine in a culture, and collecting L-glutamic acid, L-proline or L-arginine from the culture.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: January 10, 2006
    Assignee: Ajinomoto Co., Inc.
    Inventors: Maria Grigorievna Lunts, Svetlana Aleksandrovna Fomina, Tatyana Viktorovna Leonova, Mikhail Markovich Gusyatiner
  • L-arginine producing Escherichia coli and method of producing L-arginine
    Patent number: 6841365
    Abstract: Arginine can be efficiently produced by cultivating Escherichia coli which has an ability to produce arginine and an ability to utilize acetate in a culture medium to produce and accumulate arginine in the medium, and collecting arginine from the medium.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: January 11, 2005
    Assignee: Ajinomoto Co., Inc.
    Inventors: Mikhail Markovich Gusyatiner, Tatyana Viktorovna Leonova, Leonid Romanovich Ptitsyn, Tatyana Abramovna Yampolskaya
  • Bacterium having ability to produce L-glutamic acid, L-proline or L-arginine and method for producing L-glutamic acid, L-proline or L-arginine
    Publication number: 20040191876
    Abstract: L-Glutamic acid, L-proline or L-arginine is produced by culturing a bacterium belonging to the genus Escherichia, which is L-isoleucine auxotrophic and has ability to produce L-glutamic acid, L-proline or L-arginine, in a medium containing L-isoleucine, to produce and accumulate L-glutamic acid, L-proline or L-arginine in a culture, and collecting L-glutamic acid, L-proline or L-arginine from the culture.
    Type: Application
    Filed: April 13, 2004
    Publication date: September 30, 2004
    Applicant: AJINOMOTO CO., INC.
    Inventors: Maria Grigorievna Lunts, Svetlana Aleksandrovna Fomina, Tatyana Viktorovna Leonova, Mikhail Markovich Gusyatiner
  • Mutant N-acetylglutamate synthase and method for L-arginine production
    Patent number: 6790647
    Abstract: L-arginine is produced using a bacterium belonging to the genus Escherichia harboring a mutant N-acetylglutamate synthase in which the amino acid sequence corresponding to positions from 15 to 19 in a wild type N-acetylglutamate synthase is replaced with any one of amino acid sequences of SEQ ID NOS: 1 to 4, and feedback inhibition by L-arginine is desensitized.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: September 14, 2004
    Assignee: Ajinomoto Co., Inc.
    Inventors: Leonid Romanovich Ptitsyn, Irina Borisovna Altman, Sergey Vasil'evich Smirnov, Yulia Georgievna Rostova, Tatyana Abramovna Yampolskaya, Tatyana Viktorovna Leonova, Mikhail Markovich Gusyatiner
  • Mutant N-acetylglutamate synthase and method for L-arginine production
    Publication number: 20030148475
    Abstract: L-arginine is produced using a bacterium belonging to the genus Escherichia harboring a mutant N-acetylglutamate synthase in which the amino acid sequence corresponding to positions from 15 to 19 in a wild type N-acetylglutamate synthase is replaced with any one of amino acid sequences of SEQ ID NOS: 1 to 4, and feedback inhibition by L-arginine is desensitized.
    Type: Application
    Filed: June 22, 2001
    Publication date: August 7, 2003
    Applicant: AJINOMOTO CO., INC.
    Inventors: Leonid Romanovich Ptitsyn, Irina Borisovna Altman, Sergey Vasil?apos;evich Smirnov, Yulia Georgievna Rostova, Tatyana Abramovna Yampolskaya, Tatyana Viktorovna Leonova, Mikhail Markovich Gusyatiner
  • New mutant glutamine synthetase and method for producing amino acids
    Publication number: 20030148474
    Abstract: Amino acids, such as L-glutamine, L-arginine, L-tryptophan, L-histidine and L-glutamate are produced using a bacterium belonging to the genus Escherichia harboring a mutant glutamine synthetase in which the tyrosine amino acid residue corresponding to position 397 in a wild type glutamine synthetase is replaced with any of amino acid residues, preferably with phenylalanine.
    Type: Application
    Filed: November 20, 2002
    Publication date: August 7, 2003
    Applicant: Ajinomoto Co., Inc.
    Inventors: Mikhail Markovich Gusyatiner, Lirina Valerievna Ivanovskaya, Tatyana Viktorovna Leonova, Ekaterina Igorevna Mukhanova, Yulia Georgievna Rostova, Dmitriy Vladimirovich Filippov, Daria Aleksandrovna Chudakova
  • Bacterium having ability to produce L-glutamic acid, L-proline or L-arginine and method for producing L-glutamic acid, L-proline or L-arginine
    Publication number: 20020058315
    Abstract: L-Glutamic acid, L-proline or L-arginine is produced by culturing a bacterium belonging to the genus Escherichia, which is L-isoleucine auxotrophic and has ability to produce L-glutamic acid, L-proline or L-arginine, in a medium containing L-isoleucine, to produce and accumulate L-glutamic acid, L-proline or L-arginine in a culture, and collecting L-glutamic acid, L-proline or L-arginine from the culture.
    Type: Application
    Filed: September 17, 2001
    Publication date: May 16, 2002
    Applicant: AJINOMOTO CO., INC.
    Inventors: Maria Grigorievna Lunts, Svetlana Aleksandrovna Fomina, Tatyana Viktorovna Leonova, Mikhail Markovich Gusyatiner
  • L-arginine producing escherichia coli and method of producing L-arginine
    Publication number: 20020034793
    Abstract: Arginine can be efficiently produced by cultivating Escherichia coli which has an ability to produce arginine and an ability to utilize acetate in a culture medium to produce and accumulate arginine in the medium, and collecting arginine from the medium.
    Type: Application
    Filed: June 22, 2001
    Publication date: March 21, 2002
    Applicant: AJINOMOTO CO., INC.
    Inventors: Mikhail Markovich Gusyatiner, Tatyana Viktorovna Leonova, Leonid Romanovich Ptitsyn, Tatyana Abramovna Yampolskaya