Patents by Inventor Kiyosha Tsuji

Kiyosha Tsuji 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).

  • New cepham compounds and processes for the production thereof
    Patent number: 4822888
    Abstract: A compound of the formula: ##STR1## wherein R.sup.2 is halo(lower)alkyl, andR.sup.6 is amino or protected amino, its reactive derivative at the carboxy group or its lower alkyl ester, is disclosed, having utility as an intermediate for producing cephems or cephams.
    Type: Grant
    Filed: February 19, 1986
    Date of Patent: April 18, 1989
    Assignee: Fujisawa Pharmaceutical Company, Limited
    Inventors: Takao Takaya, Hisashi Takasugi, Kiyosha Tsuji, Toshiyuki Chiba