Patents by Inventor Masako Tajima

Masako Tajima 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).

  • EBV-infected stomach cancer cell line
    Patent number: 7176020
    Abstract: An EBV strain infecting epithelial cells and a stomach cancer cell line cancerated by EBV are established to clarify the mechanism of canceration of epithelial cells into stomach cancer by EBV and to develop a chemotherapeutic agent for stomach cancer cancerated by EBV. Further, a stomach cancer cell line stably producing EBV-related antigens is established to develop a diagnostic drug for stomach cancer cancerated by EBV. According to the present invention, GTC-4 cell line was established through culture of stomach cancer tissues. GTC-4 produced the EBV strain infecting epithelial cells and simultaneously produced EBV-related antigens stably in the supernatant.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: February 13, 2007
    Assignee: Eisai Co., Ltd.
    Inventors: Masako Tajima, Masakatsu Takanashi, Yukihisa Miyazawa, Toshio Takeshima, Kota Okinaga
  • EBV-infected stomach cancer cell line
    Publication number: 20030092084
    Abstract: An EBV strain infecting epithelial cells and a stomach cancer cell line cancerated by EBV are established to clarify the mechanism of canceration of epithelial cells into stomach cancer by EBV and to develop a chemotherapeutic agent for stomach cancer cancerated by EBV. Further, a stomach cancer cell line stably producing EBV-related antigens is established to develop a diagnostic drug for stomach cancer cancerated by EBV. According to the present invention, GTC-4 cell line was established through culture of stomach cancer tissues. GTC-4 produced the EBV strain infecting epithelial cells and simultaneously produced EBV-related antigens stably in the supernatant.
    Type: Application
    Filed: December 17, 2002
    Publication date: May 15, 2003
    Applicant: Eisai Co., Ltd.
    Inventors: Masako Tajima, Masakatsu Takanashi, Yukihisa Miyazawa, Toshio Takeshima, Kota Okinaga
  • EBV-infected stomach cancer cell line
    Patent number: 6551823
    Abstract: An EBV strain infecting epithelial cells and a stomach cancer cell line cancerated by EBV are established to clarify the mechanism of canceration of epithelial cells into stomach cancer by EBV and to develop a chemotherapeutic agent for stomach cancer cancerated by EBV. Further, a stomach cancer cell line stably producing EBV-related antigens is established to develop a diagnostic drug for stomach cancer cancerated by EBV. According to the present invention, GTC-4 cell line was established through culture of stomach cancer tissues. GTC-4 produced the EBV strain infecting epithelial cells and simultaneously produced EBV-related antigens stably in the supernatant.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: April 22, 2003
    Assignee: Eisai Co., Ltd.
    Inventors: Masako Tajima, Masakatsu Takanashi, Yukihisa Miyazawa, Toshio Takeshima, Kota Okinaga
  • EBV-infected stomach cancer cell line
    Publication number: 20010044148
    Abstract: An EBV strain infecting epithelial cells and a stomach cancer cell line cancerated by EBV are established to clarify the mechanism of canceration of epithelial cells into stomach cancer by EBV and to develop a chemotherapeutic agent for stomach cancer cancerated by EBV. Further, a stomach cancer cell line stably producing EBV-related antigens is established to develop a diagnostic drug for stomach cancer cancerated by EBV. According to the present invention, GTC-4 cell line was established through culture of stomach cancer tissues. GTC-4 produced the EBV strain infecting epithelial cells and simultaneously produced EBV-related antigens stably in the supernatant.
    Type: Application
    Filed: June 18, 2001
    Publication date: November 22, 2001
    Applicant: EISAI CO., LTD.
    Inventors: Masako Tajima, Masakatsu Takanashi, Yukihasa Miyazawa, Toshio Takeshima, Kota Okinaga
  • EBV-infected stomach cancer cell line
    Patent number: 6258598
    Abstract: An EBV strain infecting epithelial cells and a stomach cancer cell line cancerated by EBV are established to clarify the mechanism of canceration of epithelial cells into stomach cancer by EBV and to develop a chemotherapeutic agent for stomach cancer cancerated by EBV. Further, a stomach cancer cell line stably producing EBV-related antigens is established to develop a diagnostic drug for stomach cancer cancerated by EBV. According to the present invention, GTC-4 cell line was established through culture of stomach cancer tissues. GTC-4 produced the EBV strain infecting epithelial cells and simultaneously produced EBV-related antigens stably in the supernatant.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: July 10, 2001
    Assignee: Eisai Co., Ltd.
    Inventors: Masako Tajima, Masakatsu Takanashi, Yukihisa Miyazawa, Toshio Takeshima, Kota Okinaga