Patents by Inventor Shigeru Kawahara

Shigeru Kawahara 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).

  • Resin composition
    Patent number: 9018321
    Abstract: Resin compositions which contain a compound having at least two epoxy and/or thiirane groups in the molecule (ingredient (1)) and a specific ionic liquid (ingredient (2)), as combined, are practicable resin compositions which comprise constitutive elements of readily available materials and have well-balanced suitable curing capability and storage stability. Preferably, the ionic liquid (ingredient (2)) comprises a combination of an ammonium cation or phosphonium cation and a carboxylate anion.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: April 28, 2015
    Assignee: Ajinomoto Co., Inc.
    Inventors: Hiroshi Amano, Shigeru Kawahara
  • Recombinant polynucleotide, host cells containing the same and a process for producing a protein having aldolase activity
    Patent number: 8697416
    Abstract: 4-(Indol-3-ylmethyl)-4-hydroxy-2-oxoglutarate, which is useful as an intermediate in the synthesis of monatin, may be synthesized from indole pyruvic acid and pyruvic acid (and/or oxaloacetic acid) by using a novel aldolase derived from the genus Pseudomonas, Erwinia, Flavobacterium, or Xanthomonas.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: April 15, 2014
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masakazu Sugiyama, Kunihiko Watanabe, Shigeru Kawahara
  • Process of producing glutamate derivatives
    Patent number: 8563278
    Abstract: A process for producing efficiently glutamic acid derivatives (including salts thereof) such as monatin is described. This process entails converting a substituted ?-keto acid of formula (1) into a glutamic acid derivative of formula (2) in the presence of an enzyme catalyzing conversion of the same.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: October 22, 2013
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masakazu Sugiyama, Kunihiko Watanabe, Nao Funakoshi, Yusuke Amino, Shigeru Kawahara, Tadashi Takemoto
  • NOVEL ALDOLASE AND PRODUCTION PROCESS OF SUBSTITUTED ALPHA-KETO ACIDS
    Publication number: 20130252310
    Abstract: 4-(Indol-3-ylmethyl)-4-hydroxy-2-oxoglutarate, which is useful as an intermediate in the synthesis of monatin, may be synthesized from indole pyruvic acid and pyruvic acid (and/or oxaloacetic acid) by using a novel aldolase derived from the genus Pseudomonas, Erwinia, Flavobacterium, or Xanthomonas.
    Type: Application
    Filed: September 14, 2012
    Publication date: September 26, 2013
    Applicant: AJINOMOTO, CO., INC.
    Inventors: Masakazu SUGIYAMA, Kunihiko Watanabe, Shigeru Kawahara
  • Process for producing glutamate derivatives
    Patent number: 8535920
    Abstract: The present invention relates to a process for producing efficiently glutamic acid derivatives (including salts thereof) such as monatin by converting a substituted ?-keto acid of formula (1) into a glutamic acid derivative of formula (2) in the presence of an enzyme catalyzing conversion of the same.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: September 17, 2013
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masakazu Sugiyama, Kunihiko Watanabe, Nao Funakoshi, Yusuke Amino, Shigeru Kawahara, Tadashi Takemoto
  • NOVEL ALDOLASE AND PRODUCTION PROCESS OF SUBSTITUTED ALPHA-KETO ACIDS
    Publication number: 20130157342
    Abstract: 4-(Indol-3-ylmethyl)-4-hydroxy-2-oxoglutarate, which is useful as an intermediate in the synthesis of monatin, may be synthesized from indole pyruvic acid and pyruvic acid (and/or oxaloacetic acid) by using a novel aldolase derived from the genus Pseudomonas, Erwinia, Flavobacterium, or Xanthomonas.
    Type: Application
    Filed: June 26, 2012
    Publication date: June 20, 2013
    Applicant: Ajinomoto Co., Inc.
    Inventors: Masakazu SUGIYAMA, Kunihiko Watanabe, Shigeru Kawahara
  • Aldolase and production process of substituted ?-keto acids
    Patent number: 8273556
    Abstract: 4-(Indol-3-ylmethyl)-4-hydroxy-2-oxoglutarate, which is useful as an intermediate in the synthesis of monatin, may be synthesized from indole pyruvic acid and pyruvic acid (and/or oxaloacetic acid) by using a novel aldolase derived from the genus Pseudomonas, Erwinia, Flavobacterium, or Xanthomonas.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: September 25, 2012
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masakazu Sugiyama, Kunihiko Watanabe, Shigeru Kawahara
  • Process for producing glutamate derivatives
    Patent number: 8202711
    Abstract: The present invention relates to a process for producing efficiently glutamic acid derivatives (including salts thereof) such as monatin by converting a substituted ?-keto acid of formula (1) into a glutamic acid derivative of formula (2) in the presence of an enzyme catalyzing conversion of the same.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: June 19, 2012
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masakazu Sugiyama, Kunihiko Watanabe, Nao Funakoshi, Yusuke Amino, Shigeru Kawahara, Tadashi Takemoto
  • NOVEL ALDOLASE AND PRODUCTION PROCESS OF SUBSTITUTED ALPHA-KETO ACIDS
    Publication number: 20120040416
    Abstract: 4-(Indol-3-ylmethyl)-4-hydroxy-2-oxoglutarate, which is useful as an intermediate in the synthesis of monatin, may be synthesized from indole pyruvic acid and pyruvic acid (and/or oxaloacetic acid) by using a novel aldolase derived from the genus Pseudomonas, Erwinia, Flavobacterium, or Xanthomonas.
    Type: Application
    Filed: September 30, 2011
    Publication date: February 16, 2012
    Applicant: Ajinomoto Co., Inc.
    Inventors: Masakazu SUGIYAMA, Kunihiko Watanabe, Shigeru Kawahara
  • PROCESSES OF PRODUCING GLUTAMIC ACID COMPOUNDS AND PRODUCTION INTERMEDIATES THEREFORE AND NOVEL INTERMEDIATE FOR THE PROCESSES
    Publication number: 20120035373
    Abstract: The present invention relates to processes of producing glutamic acid compounds, for example, monatin, which are useful as, for example, production intermediates for sweetener or pharmaceutical products.
    Type: Application
    Filed: October 14, 2011
    Publication date: February 9, 2012
    Applicant: AJINOMOTO CO. INC
    Inventors: Shigeru KAWAHARA, Nao FUNAKOSHI
  • Aldolase and production process of substituted ?-keto acids
    Patent number: 8058038
    Abstract: 4-(Indol-3-ylmethyl)-4-hydroxy-2-oxoglutarate, which is useful as an intermediate in the synthesis of monatin, may be synthesized from indole pyruvic acid and pyruvic acid (and/or oxalacetic acid) by using a novel aldolase derived from the genus Pseudomonas, Erwinia, Flavobacterium, or Xanthomonas.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: November 15, 2011
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masakazu Sugiyama, Kunihiko Watanabe, Shigeru Kawahara
  • POLYAMIDE COMPOSITION
    Publication number: 20110196080
    Abstract: A polyamide composition comprising: 100 parts by mass of polyamide (A) with a melting point of 270° C. to 340° C., 1 to 100 parts by mass of flame retardant (B), and 1 to 10 parts by mass of anti-dripping agent (C), wherein the anti-dripping agent (C) comprises a fluorine resin (C1) and at least one polymer (C2) selected from the group consisting of an ionomer and a modified aromatic vinyl-based polymer containing less than 15 mass % of halogen atom, in which a mass ratio of the fluorine resin (C1)/the polymer (C2) is 1/4 to 4/1.
    Type: Application
    Filed: July 25, 2008
    Publication date: August 11, 2011
    Applicant: Kuraray Co., Ltd.
    Inventors: Hideharu Matsuoka, Takaharu Shigematsu, Kozo Tamura, Shigeru Kawahara
  • PROCESS FOR PRODUCING GLUTAMATE DERIVATIVES
    Publication number: 20110189738
    Abstract: The present invention relates to a process for producing efficiently glutamic acid derivatives (including salts thereof) such as monatin by converting a substituted ?-keto acid of formula (1) into a glutamic acid derivative of formula (2) in the presence of an enzyme catalyzing conversion of the same.
    Type: Application
    Filed: March 10, 2011
    Publication date: August 4, 2011
    Applicant: Ajinomoto Co., Inc.
    Inventors: Masakazu SUGIYAMA, Kunihiko WATANABE, Nao FUNAKOSHI, Yusuke AMINO, Shigeru KAWAHARA, Tadashi TAKEMOTO
  • Processes of producing glutamic acid compounds and production intermediates therefore and novel intermediate for the processes
    Patent number: 7868187
    Abstract: The present invention relates to processes of producing glutamic acid compounds, for example, monatin, which are useful as, for example, production intermediates for sweetener or pharmaceutical products.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: January 11, 2011
    Assignee: Ajinomoto Co., Inc.
    Inventors: Shigeru Kawahara, Nao Funakoshi
  • PROCESS OF PRODUCING GLUTAMATE DERIVATIVES
    Publication number: 20100323411
    Abstract: The present invention relates to a process for producing efficiently glutamic acid derivatives (including salts thereof) such as monatin by converting a substituted ?-keto acid of formula (1) into a glutamic acid derivative of formula (2) in the presence of an enzyme catalyzing conversion of the same.
    Type: Application
    Filed: August 10, 2010
    Publication date: December 23, 2010
    Applicant: AJINOMOTO CO., INC.
    Inventors: MASAKAZU SUGIYAMA, KUNIHIKO WATANABE, NAO FUNAKOSHI, YUSUKE AMINO, SHIGERU KAWAHARA, TADASHI TAKEMOTO
  • Process for producing an optically active compound
    Patent number: 7816541
    Abstract: The present invention provides a process for selectively producing an enantiomer at position 4 of an optically active compound in the cross aldol reaction of pyruvic acid and indole-3-pyruvic acid. The process comprises the step of reacting pyruvic acid with indole-3-pyruvic acid in the presence of an optically active ?-amino acid containing a secondary amine and a metal ion.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: October 19, 2010
    Assignee: Ajinomoto Co., Inc.
    Inventors: Shigeru Kawahara, Yusuke Amino, Masakazu Sugiyama
  • PROCESS FOR PRODUCING GLUTAMATE DERIVATIVES
    Publication number: 20100261234
    Abstract: The present invention relates to a process for producing efficiently glutamic acid derivatives (including salts thereof) such as monatin by converting a substituted ?-keto acid of formula (1) into a glutamic acid derivative of formula (2) in the presence of an enzyme catalyzing conversion of the same.
    Type: Application
    Filed: April 27, 2010
    Publication date: October 14, 2010
    Applicant: Ajinomoto Co., Inc.
    Inventors: Masakazu SUGIYAMA, Kunihiko Watanabe, Nao Funakoshi, Yusuke Amino, Shigeru Kawahara, Tadashi Takemoto
  • PROCESSES OF PRODUCING GLUTAMIC ACID COMPOUNDS AND PRODUCTION INTERMEDIATES THEREFORE AND NOVEL INTERMEDIATE FOR THE PROCESSES
    Publication number: 20100105924
    Abstract: The present invention relates to processes of producing glutamic acid compounds, for example, monatin, which are useful as, for example, production intermediates for sweetener or pharmaceutical products.
    Type: Application
    Filed: November 6, 2009
    Publication date: April 29, 2010
    Applicant: AJINOMOTO CO. INC.
    Inventors: Shigeru KAWAHARA, Nao FUNAKOSHI
  • Processes of producing glutamic acid compounds and production intermediates therefore and novel intermediate for the processes
    Patent number: 7678925
    Abstract: The present invention relates to processes of producing glutamic acid compounds, for example, monatin, which are useful as, for example, production intermediates for sweetener or pharmaceutical products.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: March 16, 2010
    Assignee: Ajinomoto Co., Inc.
    Inventors: Shigeru Kawahara, Nao Funakoshi
  • PROCESSES OF PRODUCING GLUTAMIC ACID COMPOUNDS AND PRODUCTION INTERMEDIATES THEREFORE AND NOVEL INTERMEDIATE FOR THE PROCESSES
    Publication number: 20090259052
    Abstract: The present invention relates to processes of producing glutamic acid compounds, for example, monatin, which are useful as, for example, production intermediates for sweetener or pharmaceutical products.
    Type: Application
    Filed: June 23, 2009
    Publication date: October 15, 2009
    Applicant: AJINOMOTO CO. INC
    Inventors: Shigeru KAWAHARA, Yusuke AMINO, Kenichi MORI, Nao FUNAKOSHI, Tadashi TAKEMOTO