Patents Assigned to Forum Chemicals Ltd.
  • Controlled release device with an impermeable coating having an orifice for release of drug
    Patent number: 5004614
    Abstract: Controlled release devices having a core including an active agent and an outer coating which is substantially impermeable to the entrance of an environmental fluid and substantially impermeable to the release of the active agent during a dispensing period allow the controlled release of the active agent through an orifice in the outer coating.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: April 2, 1991
    Assignee: Forum Chemicals Ltd.
    Inventor: John N. Staniforth