Patents by Inventor Katsuhiko Hamaguchi

Katsuhiko Hamaguchi 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).

  • Cephalosporin derivatives
    Patent number: 5233035
    Abstract: A cephalosporin compound represented by the general formula: ##STR1## This compound exhibits a high antimicrobial activity.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: August 3, 1993
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Ryuichiro Hara, Noriaki Nagano, Hideki Anan, Tokuo Koide, Ei-ichi Nakai, Masaki Yokota, Katsuhiko Hamaguchi, Masato Sato, Toru Yoden, Tetsuya Maeda