Patents by Inventor Shigemi Yoshida

Shigemi Yoshida 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).

  • Physiologically active substances, probestin and prostatin and production thereof
    Patent number: 5021549
    Abstract: New physiologically active substances, named probestin and prostatin, respectively, are produced from a new microorganism, Streptomyces azureus MH663-2F6 strain identified as FERM P-9541 or FERM BP-1963. Probestin and prostatin have an activity inhibitory to aminopeptidase M and also have immunopotentiating properties.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: June 4, 1991
    Assignee: Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai
    Inventors: Tomio Takeuchi, Takaaki Aoyagi, Masa Hamada, Hiroshi Naganawa, Shigemi Yoshida