Patents by Inventor Yuko Kai

Yuko Kai 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 screening a salty taste modulating substance
    Patent number: 9222944
    Abstract: By contacting a test substance with a cell that expresses a Kv3.2 protein, and comparing observed cation influx into the cell with cation influx into the cell observed when the test substance is not contacted with the cell, a salty taste modulating substance such as salt alternative compound, or salt perception enhancing or inhibiting compound is screened.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: December 29, 2015
    Assignee: AJINOMOTO CO., INC.
    Inventors: Yutaka Ishiwatari, Yuko Kai, Takami Maekawa, Yuzuru Eto
  • SALTY TASTE ENHANCER
    Publication number: 20140004243
    Abstract: The present invention provides a compound having a salty taste enhance activity, and a salty taste enhancer containing the compound, and the like. The present invention relates to a salty taste enhancer for a food or drink, which contains a compound represented by the following formula: wherein each symbol is as defined in the specification, or an edible salt thereof.
    Type: Application
    Filed: September 6, 2013
    Publication date: January 2, 2014
    Applicant: AJINOMOTO CO., INC.
    Inventors: Yuki TAHARA, Yusuke Amino, Takami Maekawa, Yuzuru Eto, Takashi Miyaki, Wakana Saikawa, Yuko Kai, Yutaka Ishiwatari
  • METHOD FOR SCREENING A SALTY TASTE MODULATING SUBSTANCE
    Publication number: 20120028263
    Abstract: By contacting a test substance with a cell that expresses a Kv3.2 protein, and comparing observed cation influx into the cell with cation influx into the cell observed when the test substance is not contacted with the cell, a salty taste modulating substance such as salt alternative compound, or salt perception enhancing or inhibiting compound is screened.
    Type: Application
    Filed: July 26, 2011
    Publication date: February 2, 2012
    Applicant: AJINOMOTO CO., INC.
    Inventors: Yutaka Ishiwatari, Yuko Kai, Takami Maekawa, Yuzuru Eto
  • Mutant serine acetyltransferase
    Patent number: 7312058
    Abstract: O-acetylserine, L-cysteine and sulphurous compounds derived therefrom may be produced using a bacterium belonging to the genus Escherichia which harbors a mutant feedback-resistant serine acetyltransferases in which the amino acid sequence corresponding to positions from 89 to 96 in a wild-type serine acetyltransferase is replaced with any one of the amino acid sequences shown in SEQ ID NOS: 4 to 9, and feedback inhibition by L-cysteine in the bacterium is desensitized.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: December 25, 2007
    Assignee: Ajinomoto Co., Ltd.
    Inventors: Tatsuki Kashiwagi, Yuko Kai, Kohki Ishikawa, Ei-ichiro Suzuki, Hiroshi Takagi, Mikhail Kharisovich Ziyatdinov, Ekaterina Igorevna Redkina, Mikhail Markovich Gusyatiner
  • MUTANT PROTEIN HAVING THE PEPTIDE-SYNTHESIZING ACTIVITY
    Publication number: 20070292916
    Abstract: The present invention aims at providing an excellent peptide-synthesizing protein and a method for efficiently producing a peptide. The peptide is synthesized by reacting an amine component and a carboxy component in the presence of at least one of proteins shown in the following (I) and (II). (I) The mutant protein having an amino acid sequence comprising one or more mutations from any of the mutations 1 to 68, and the mutations 239 to 290 and 324 to 377 in an amino acid sequence of SEQ ID NO:2.
    Type: Application
    Filed: June 20, 2007
    Publication date: December 20, 2007
    Applicant: Ajinomoto Co., Inc.
    Inventors: Isao ABE, Rie Takeshita, Seiichi Hara, Sonoko Suzuki, Kenzo Yokozeki, Masakazu Sugiyama, Shunichi Suzuki, Kunihiko Watanabe, Nobuhisa Shimba, Takefumi Nakamura, Uno Tagami, Yuya Kodama, Hiromi Onoye, Reiko Yuuji, Eiichiro Suzuki, Tatsuki Kashiwagi, Ningchun Xu, Yuko Kai
  • Mutant protein having the peptide-synthesizing activity
    Publication number: 20070190602
    Abstract: The present invention aims at providing an excellent peptide-synthesizing protein and a method for efficiently producing a peptide. The peptide is synthesized by reacting an amine component and a carboxy component in the presence of at least one of proteins shown in the following (I) and (II). (I) The mutant protein having an amino acid sequence comprising one or more mutations from any of the mutations 1 to 68, and the mutations 239 to 290 and 324 to 377 in an amino acid sequence of SEQ ID NO:2.
    Type: Application
    Filed: December 27, 2005
    Publication date: August 16, 2007
    Applicant: AJINOMOTO CO., INC
    Inventors: Isao Abe, Rie Takeshita, Seiichi Hara, Sonoko Suzuki, Kenzo Yokozeki, Masakazu Sugiyama, Shunichi Suzuki, Kunihiko Watanabe, Nobuhisa Shimba, Takefumi Nakamura, Uno Tagami, Yuya Kodama, Hiromi Onoye, Reiko Yuuji, Eiichiro Suzuki, Tatsuki Kashiwagi, Ningchun Xu, Yuko Kai
  • Mutant serine acetyltransferase
    Publication number: 20050112731
    Abstract: O-acetylserine, L-cysteine and sulphurous compounds derived therefrom may be produced using a bacterium belonging to the genus Escherichia which harbors a mutant feedback-resistant serine acetyltransferases in which the amino acid sequence corresponding to positions from 89 to 96 in a wild-type serine acetyltransferase is replaced with any one of the amino acid sequences shown in SEQ ID NOS: 4 to 9, and feedback inhibition by L-cysteine in the bacterium is desensitized.
    Type: Application
    Filed: July 16, 2004
    Publication date: May 26, 2005
    Inventors: Tatsuki Kashiwagi, Yuko Kai, Kohki Ishikawa, Ei-ichiro Suzuki, Hiroshi Takagi, Mikhail Ziyatdinov, Ekaterina Redkina, Mikhail Gusyatiner