Patents by Inventor Ryosuke Ushizima

Ryosuke Ushizima 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, and antibacterial agents
    Patent number: 4814328
    Abstract: The compound having the formula: ##STR1## wherein R is a straight chain, branched chain or cyclic lower alkyl, a lower alkenyl or a lower alkynyl group which may be substituted by a carboxyl group, and R.sup.1 is hydrogen atom or an acetyl group; or a pharmaceutically acceptable salt, physiologically hydrolyzable ester or solvate thereof.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: March 21, 1989
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Susumu Nakagawa, Norikazu Otake, Ryosuke Ushizima