Patents Assigned to Dainippon Jochugiki Kabushiki Kaisha
  • Patent number: 4161537
    Abstract: Isovaleric acid ester derivatives and the optical isomers thereof expressed by the general formula I: ##STR1## wherein, R.sub.1 represents hydrogen, methyl group or chlorine atom, andR.sub.2 represents hydrogen or cyano group.
    Type: Grant
    Filed: November 30, 1977
    Date of Patent: July 17, 1979
    Assignee: Dainippon Jochugiki Kabushiki Kaisha
    Inventors: Yoshio Katsuda, Minoru Nakajima, Toshio Fujita