Patents by Inventor Yasuko Takaoka

Yasuko Takaoka 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).

  • Formate dehydrogenase tolerant to halogen compounds and process for producing the same
    Patent number: 7432095
    Abstract: The invention provides a formate dehydrogenase having high specific activity, small Km values for formate and NAD, broad temperature and pH ranges of stability, broad temperature and pH ranges for action, and capable of regenerating a coenzyme with good efficiency in case of being present in an enzymatic reduction reaction system without inactivated. The invention provides the enzyme mentioned above which has characteristics suited for industrial application by screening for soil formate dehydrogenase-producing microorganisms. The invention further provides a DNA containing the gene coding for the enzyme of the invention, a recombinant DNA constructed using a vector, and a transformant obtained by using this plasmid.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: October 7, 2008
    Assignee: Kaneka Corporation
    Inventors: Hirokazu Nanba, Yasuko Takaoka
  • Novel formate dehydrogenase tolerant to halogen compounds and process for producing the same
    Publication number: 20050064569
    Abstract: The invention provides a formate dehydrogenase having high specific activity, small Km values for formate and NAD, broad temperature and pH ranges of stability, broad temperature and pH ranges for action, and capable of regenerating a coenzyme with good efficiency in case of being present in an enzymatic reduction reaction system without inactivated. The invention provides the enzyme mentioned above which has characteristics suited for industrial application by screening for soil formate dehydrogenase-producing microorganisms. The invention further provides a DNA containing the gene coding for the enzyme of the invention, a recombinant DNA constructed using a vector, and a transformant obtained by using this plasmid.
    Type: Application
    Filed: October 9, 2002
    Publication date: March 24, 2005
    Inventors: Hirokazu Nanba, Yasuko Takaoka