Patents Assigned to Johson Matthey Public Limited Company
  • Processes for making opioids including 14-hydroxycodeinone and 14-hydroxymorphinone
    Patent number: 10649669
    Abstract: Improved processes for making opioid products having low impurity levels including making 14-hydroxycodeinone and 14-hydroxymorphinone from thebaine and oripavine, respectively.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: May 12, 2020
    Assignee: Johson Matthey Public Limited Company
    Inventors: Saroop Matharu, Brian Heinrich, Ewart Grant, Hongzhi Zhang