Patents by Inventor Ryoichi Sakaue

Ryoichi Sakaue 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).

  • Cholesterol oxidase stable in the presence of surfactant
    Patent number: 7371550
    Abstract: A novel cholesterol oxidase having stability in the presence of surfactant and a gene encoding the novel cholesterol oxidase.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: May 13, 2008
    Assignee: Kikkoman Corporation
    Inventors: Ryoichi Sakaue, Naoki Kajiyama
  • Cholesterol oxidase stable in the presence of surfactant
    Publication number: 20070010000
    Abstract: A novel cholesterol oxidase having stability in the presence of surfactant and a gene encoding the novel cholesterol oxidase.
    Type: Application
    Filed: June 7, 2006
    Publication date: January 11, 2007
    Applicant: KIKKOMAN CORPORATION,
    Inventors: Ryoichi Sakaue, Naoki Kajiyama
  • Fructosyl amino acid oxidase
    Patent number: 7091017
    Abstract: The present invention provides a novel fructosyl amino acid oxidase that is excellent in thermal stability. Moreover, the present invention provides a fructosyl amino acid oxidase gene encoding the novel fructosyl amino acid oxidase, a recombinant DNA in which the gene is inserted into a vector DNA, a transformant or transductant containing this gene, and a process for producing the novel fructosyl amino acid oxidase, which comprises culturing the transformant or transductant in a medium and collecting the novel fructosyl amino acid oxidase from the culture product.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: August 15, 2006
    Assignee: Kikkoman Corporation
    Inventors: Ryoichi Sakaue, Naoki Kajiyama
  • Method for assaying glycated protein
    Patent number: 7070948
    Abstract: Based on a principle that is different to that of a conventional enzymatic method, the present invention provides a novel method for assaying a glycated protein by a simple procedure, within a short period of time, and with high accuracy, and a reagent kit for assaying used in the method. The method for assaying a glycated protein in a sample is realized by treating a glycated protein-containing sample with protease to liberate a glycated peptide, preferably an ?-glycated peptide, particularly preferably an ?-glycated dipeptide, from a glycated protein, allowing an oxidase to react with the liberated glycated peptide, and determining the produced hydrogen peroxide.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: July 4, 2006
    Assignee: Kikkoman Corporation
    Inventors: Ryoichi Sakaue, Ayumi Arai, Naoki Kajiyama, Yasuji Koyama
  • Novel fructosyl amino acid oxidase
    Publication number: 20040115662
    Abstract: The present invention provides a novel fructosyl amino acid oxidase that is excellent in thermal stability. Moreover, the present invention provides a fructosyl amino acid oxidase gene encoding the novel fructosyl amino acid oxidase, a recombinant DNA in which the gene is inserted into a vector DNA, a transformant or transductant containing this gene, and a process for producing the novel fructosyl amino acid oxidase, which comprises culturing the transformant or transductant in a medium and collecting the novel fructosyl amino acid oxidase from the culture product.
    Type: Application
    Filed: May 28, 2003
    Publication date: June 17, 2004
    Inventors: Ryoichi Sakaue, Naoki Kajiyama