Patents Represented by Law Firm Church, Marla J.
  • Sustained release drug delivery system
    Patent number: 5128142
    Abstract: A controlled release formulation comprising an adsorbate of a mixture of a pharmaceutically useful active ingredient and an inactive substance adsorbed on a cross-linked polymer. The inactive substance is selected to modify the dissolution of the active ingredient from the cross-linked polymer in vivo.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: July 7, 1992
    Assignee: Elan Corporation, plc
    Inventors: Seamus Mulligan, Randall T. Sparks