Patents Assigned to MPI Limited
  • Physiologically active substance
    Patent number: 5276177
    Abstract: A novel physiologically active substance is represented by the formula. ##STR1## The substance is preferably derived from propolis, has excellent antitumor activity and is useful as an antitumor drug.
    Type: Grant
    Filed: June 17, 1992
    Date of Patent: January 4, 1994
    Assignees: Tetsuya Matsuno, MPI Limited
    Inventors: Mayumi Yoshida, Yutaka Saito, Tetsuya Matsuno