Patents Assigned to Hoei Pharmaceutical Co., Ltd.
  • Antiallergic and antiinflammatory benzothiazolinone derivatives
    Patent number: 4879301
    Abstract: Benzothiazolone Derivatives represented by the formula: ##STR1## in which X is halogen, A is alkylene and R is alkoxy, amino, substituted amino, carboxyalkyl or carboxyalkylene, which are useful as antiallergic or antiinflammatory agents.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: November 7, 1989
    Assignees: Hoei Pharmaceutical Co., Ltd., Research Institute for Production Developement
    Inventors: Suminori Umio, Shizuo Kozasa, Takahiro Yabuuchi