Patents Assigned to Katayama Seiyakusho Co., Ltd.
  • Fluorinated benzoyl compounds
    Patent number: 5093515
    Abstract: A 2-chloro-4,5-difluorobenzoyl compound of the formula: ##STR1## wherein R.sup.2 is a lower alkyl group, and R.sup.7 is a 2,4-difluorophenyl group or a 4-fluorophenyl group.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: March 3, 1992
    Assignees: Asahi Glass Company Ltd., Katayama Seiyakusho Co., Ltd.
    Inventors: Seisaku Kumai, Osamu Yokokoji, Akihiro Tamaoki, Ryonosuke Yoshida, Yoshiyuki Murakami