Patents by Inventor Yasushi Nishiie

Yasushi Nishiie 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).

  • Saintopin derivatives
    Patent number: 5510501
    Abstract: The present invention relates to Saintopin derivatives represented by the following formula (I): ##STR1## wherein R.sup.1 is hydrogen and R.sup.2 is SO.sub.2 OH (UCE 1022), or R.sup.1 is acetyl and R.sup.2 is H (Saintopin E), which are useful as antibacterial and anti-tumor agents.
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: April 23, 1996
    Assignee: Kyowa Hakko Kogyo, Co. Ltd.
    Inventors: Hirofumi Nakano, Noboru Fujii, Yoshinori Yamashita, Yutaka Saitoh, Tsutomu Agatsuma, Katsuhiko Ando, Yasushi Nishiie, Katsunori Kita, Naoki Morishima, Katsushige Gomi