Patents Assigned to Pharmaco Development Partners
  • Orally active nonaddicting analgesics
    Patent number: 5366979
    Abstract: Analgesic compositions containing stereoisomerically pure normorphine and norcodeine derivatives or pharmaceutically acceptable acid addition salts thereof are described. Methods of administering the novel compositions to achieve analgesia are described as well.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: November 22, 1994
    Assignee: Pharmaco Development Partners
    Inventor: John A. Lawson