Patents Examined by Gerorge F. Lesmes
  • Transdermal drug delivery system
    Patent number: 4797284
    Abstract: A multilaminate transdermal drug delivery system containing only dissolved drug in the drug reservoir is described. The delivery system comprises a backing layer, a reservoir layer and a membrane layer, wherein the drug in the reservoir is completely dissolved and the control of delivery is effected by the joint action of reservoir and membrane.
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: January 10, 1989
    Assignee: Merck & Co., Inc.
    Inventors: Alice E. Loper, Anup K. Majumdar