Patents by Inventor Hisako Masuda

Hisako Masuda 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).

  • Anti-tumor preparation against certain tumors and process for preparing the same
    Patent number: 4349541
    Abstract: An anti-tumor preparation containing cells of Streptococcus equisimilis and a process for preparing the preparation which comprises subjecting the cells to heat treatment in a salt solution with or without penicillin treatment.
    Type: Grant
    Filed: May 25, 1979
    Date of Patent: September 14, 1982
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yasuhisa Takeda, Takashi Matsuno, Mihoko Ohtaka, Hiroki Mitsui, Tsutomu Kawaguchi, Hisako Masuda, Hiroshi Okazaki, Mitsuaki Handa, Yutaka Sugawara, Haruki Ogawa