Patents by Inventor Katsuhiko Nagaoka

Katsuhiko Nagaoka 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).

  • Antibiotic substance
    Patent number: 4835287
    Abstract: A substance SS42227 represented by the following formula (I): ##STR1## in which X represents >CH.sub.2 or >C=CHOH. The substance has antimicrobial and antitumor activities, and thus is useful as a medicine.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: May 30, 1989
    Assignee: SS Pharmaceutical Co., Ltd.
    Inventors: Katsuhiko Nagaoka, Masaru Matsumoto, Koichi Yokoi, Junji Oono, Kenichi Kukita, Toshiaki Nakashima