Patents Assigned to Laboratories Delagrange
  • Preparation of a slow-release drug
    Patent number: 4808416
    Abstract: The invention concerns the preparation of a slow-release drug characterized by the coating of a core comprising a therapeutically active principle by means of a substance which retards its release and by means of an additional layer consisting of an enteric substance.
    Type: Grant
    Filed: July 9, 1987
    Date of Patent: February 28, 1989
    Assignee: Laboratories Delagrange
    Inventors: Takehisa Hata, Hisami Yamaguchi, Satoshi Ueda, Masateru Kodani