Patents by Inventor Yoko Hamada

Yoko Hamada 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).

  • ?-galactoside-?2,6-sialyltransferase, a gene encoding thereof, and a method for enhancing enzyme activity
    Patent number: 8372617
    Abstract: The present invention provides an extremely useful and novel ?-galactoside-?2,6-sialyltransferase having an optimum reaction pH in a neutral to alkaline range, and a nucleic acid encoding the sialyltransferase. The present invention further provides a vector carrying a nucleic acid encoding the sialyltransferase, and a host cell transformed with the vector, as well as a method for producing a recombinant ?-galactoside-?2,6-sialyltransferase.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: February 12, 2013
    Assignee: Japan Tobacco Inc.
    Inventors: Takeshi Yamamoto, Yoshimitsu Takakura, Toshiki Mine, Yoko Hamada, Hitomi Kajiwara, Masako Ichikawa, Hiroshi Tsukamoto
  • NOVEL BETA-GALACTOSIDE-ALPHA2,6-SIALYLTRANSFERASE, A GENE ENCODING THEREOF, AND A METHOD FOR ENHANCING ENZYME ACTIVITY
    Publication number: 20120282659
    Abstract: The present invention provides an extremely useful and novel ?-galactoside-?2,6-sialyltransferase having an optimum reaction pH in a neutral to alkaline range, and a nucleic acid encoding the sialyltransferase. The present invention further provides a vector carrying a nucleic acid encoding the sialyltransferase, and a host cell transformed with the vector, as well as a method for producing a recombinant ?-galactoside-?2,6-sialyltransferase.
    Type: Application
    Filed: April 25, 2012
    Publication date: November 8, 2012
    Inventors: Takeshi Yamamoto, Yoshimitsu Takakura, Toshiki Mine, Yoko Hamada, Hitomi Kajiwara, Masako Ichikawa, Hiroshi Tsukamoto
  • ?-galactoside-?2,6-sialyltransferase, a gene encoding thereof, and a method for enhancing enzyme activity
    Patent number: 8187853
    Abstract: The present invention provides an extremely useful and novel ?-galactoside-?2,6-sialyltransferase having an optimum reaction pH in a neutral to alkaline range, and a nucleic acid encoding the sialyltransferase. The present invention further provides a vector carrying a nucleic acid encoding the sialyltransferase, and a host cell transformed with the vector, as well as a method for producing a recombinant ?-galactoside-?2,6-sialyltransferase.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: May 29, 2012
    Assignee: Japan Tobacco Inc.
    Inventors: Takeshi Yamamoto, Yoshimitsu Takakura, Toshiki Mine, Yoko Hamada, Hitomi Kajiwara, Masako Ichikawa, Hiroshi Tsukamoto
  • NOVEL BETA-GALACTOSIDE-a2,6-SIALYLTRANSFERASE, A GENE ENCODING THEREOF, AND A METHOD FOR ENHANCING ENZYME ACTIVITY
    Publication number: 20100112616
    Abstract: The present invention provides an extremely useful and novel ?-galactoside-?2,6-sialyltransferase having an optimum reaction pH in a neutral to alkaline range, and a nucleic acid encoding the sialyltransferase. The present invention further provides a vector carrying a nucleic acid encoding the sialyltransferase, and a host cell transformed with the vector, as well as a method for producing a recombinant ?-galactoside-?2,6-sialyltransferase.
    Type: Application
    Filed: March 3, 2008
    Publication date: May 6, 2010
    Applicant: JAPAN TOBACCO INC.
    Inventors: Takeshi Yamamoto, Yoshimitsu Takakura, Toshiki Mine, Yoko Hamada, Hitomi Kajiwara, Masako Ichikawa, Hiroshi Tsukamoto