Patents by Inventor Takuzo Nishimura

Takuzo Nishimura 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).

  • 7.alpha.-Methoxycephalosporin derivatives and their pharmaceutical compositions having antibacterial activity
    Patent number: 4247548
    Abstract: 7.alpha.-Methoxycephalosporin derivatives of general formula (I): ##STR1## wherein: R.sup.1 represents a hydroxy group; a C.sub.1 -C.sub.4 alkoxy group; a C.sub.2 -C.sub.5 aliphatic acyloxy group; a benzoyloxy group which is unsubstituted or has one or more C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, nitro or halogen substituents; a benzenesulphonyloxy group which is unsubstituted or has one or more C.sub.1 -C.sub.4 alkyl substituents; or a C.sub.1 -C.sub.3 alkanesulphonyloxy group which is unsubstituted or has one or more C.sub.1 -C.sub.3 alkoxy, cyano, nitro, halogen or C.sub.2 -C.sub.4 alkoxycarbonyl substituents;R.sup.2 represents a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, a halogen atom, a carboxyl group, a C.sub.2 -C.sub.5 alkoxycarbonyl group, a carbamoyl group, an alkylcarbamoyl group in which the alkyl moiety has from 1 to 3 carbon atoms, a di(C.sub.1 -C.sub.3 alkyl)carbamoyl group or a cyano group;R.sup.
    Type: Grant
    Filed: April 10, 1979
    Date of Patent: January 27, 1981
    Assignee: Sankyo Company Limited
    Inventors: Masafumi Yoshimoto, Hachio Miyazawa, Takuzo Nishimura, Akiko Ando, Norio Nakamura, Hideo Nakao
  • Penicillin and cephalosporin derivatives and process for preparing the same
    Patent number: 4064137
    Abstract: Novel penicillin and cephalosporin derivatives possessing interferon inducibility and represented by the formula ##STR1## wherein Y represents a hydrogen atom, a halogen atom a nitro group, an alkoxy group or an alkyl group; M represents a protective group for a hydroxyl or carboxyl group; Z represents a group ##STR2## or a group ##STR3## in which D is a hydrogen atom, an acyloxy group, a carbamoyloxy group or a substituted or unsubstituted heterocyclic thio group; A represents a cyano group, a carboalkoxy group or a nitro group; and B represents a hydrogen atom, a cyano group, a carboalkoxy group or a nitro groupAnd process for preparing the same.
    Type: Grant
    Filed: January 17, 1977
    Date of Patent: December 20, 1977
    Assignee: Sankyo Company Limited
    Inventors: Koichi Hirai, Yuji Iwano, Tokio Saito, Tetsuo Hiraoka, Yukichi Kishida, Takuzo Nishimura