Patents by Inventor Toshiki Taba

Toshiki Taba 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).

  • Methods for making 3-indole-pyruvic acid from tryptophan using a tryptophan deaminase
    Patent number: 8518665
    Abstract: It is an object of the present invention to provide a procedure for realizing inexpensive and simple production of 3-indole-pyruvic acid. A transformant is made using a polynucleotide having a specific nucleotide sequence encoding a protein having an oxidase activity, and oxidase is generated by culturing the transformant in a medium to accumulate the oxidase in the medium and/or the transformant. Further, tryptophan is converted into 3-indole-pyruvic acid in the presence of the transformant and/or a culture thereof to produce 3-indole-pyruvic acid.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: August 27, 2013
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yasuaki Takakura, Seiichi Hara, Toshiki Taba, Shunichi Suzuki, Masakazu Sugiyama, Kunihiko Watanabe, Kenzo Yokozeki
  • NOVEL OXIDASE GENE AND METHOD FOR PRODUCING 3-INDOLE-PYRUVIC ACID BY UTILIZING THE GENE
    Publication number: 20130084610
    Abstract: It is an object of the present invention to provide a procedure for realizing inexpensive and simple production of 3-indole-pyruvic acid. A transformant is made using a polynucleotide having a specific nucleotide sequence encoding a protein having an oxidase activity, and oxidase is generated by culturing the transformant in a medium to accumulate the oxidase in the medium and/or the transformant. Further, tryptophan is converted into 3-indole-pyruvic acid in the presence of the transformant and/or a culture thereof to produce 3-indole-pyruvic acid.
    Type: Application
    Filed: November 26, 2012
    Publication date: April 4, 2013
    Inventors: Yasuaki TAKAURA, Seiichi Hara, Toshiki Taba, Shunichi Suzuki, Masakazu Sugiyama, Kunihiko Watanabe, Kenzo Yokozeki
  • Oxidase gene and method for producing 3-indole-pyruvic acid by utilizing the gene
    Patent number: 8394940
    Abstract: It is an object of the present invention to provide a procedure for realizing inexpensive and simple production of 3-indole-pyruvic acid. A transformant is made using a polynucleotide having a specific nucleotide sequence encoding a protein having an oxidase activity, and oxidase is generated by culturing the transformant in a medium to accumulate the oxidase in the medium and/or the transformant. Further, tryptophan is converted into 3-indole-pyruvic acid in the presence of the transformant and/or a culture thereof to produce 3-indole-pyruvic acid.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: March 12, 2013
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yasuaki Takakura, Seiichi Hara, Toshiki Taba, Shunichi Suzuki, Masakazu Sugiyama, Kunihiko Watanabe, Kenzo Yokozeki
  • NOVEL OXIDASE GENE AND METHOD FOR PRODUCING 3-INDOLE-PYRUVIC ACID BY UTILIZING THE GENE
    Publication number: 20100221795
    Abstract: It is an object of the present invention to provide a procedure for realizing inexpensive and simple production of 3-indole-pyruvic acid. A transformant is made using a polynucleotide having a specific nucleotide sequence encoding a protein having an oxidase activity, and oxidase is generated by culturing the transformant in a medium to accumulate the oxidase in the medium and/or the transformant. Further, tryptophan is converted into 3-indole-pyruvic acid in the presence of the transformant and/or a culture thereof to produce 3-indole-pyruvic acid.
    Type: Application
    Filed: February 24, 2010
    Publication date: September 2, 2010
    Applicant: AJINOMOTO CO. INC
    Inventors: YASUAKI TAKAKURA, SEIICHI HARA, TOSHIKI TABA, SHUNICHI SUZUKI, MASAKAZU SUGIYAMA, KUNIHIKO WATANABE, KENZO YOKOZEKI
  • Method for producing optically active IHOG and monatin
    Patent number: 7354746
    Abstract: The present invention relates to a method for producing optically active IHOG, which can in turn be used for the production of monatin. The present invention further relates to a method for producing optically active monatin, and an aldolase which can be used in these methods. As such, the present invention enables the synthesis of 4-(Indole-3-ylmethyl)-4-hydroxy-2-oxoglutaric acid with high optical purity, which is useful as an intermediate in the synthesis of optically active monatin, from indole pyruvic acid and pyruvic acid (or oxaloacetic acid).
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: April 8, 2008
    Assignee: Ajinomoto Co., Inc.
    Inventors: Shunichi Suzuki, Seiichi Hara, Toshiki Taba, Yasuaki Takakura