Patents by Inventor Wen-Chen Zhang

Wen-Chen Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the preparation of opioid compounds
    Patent number: 9701687
    Abstract: The present invention is directed to a process for the preparation of opioid compounds such as buprenorphine, naltrexone, naloxone, nalbuphone, nalbuphine, and the like.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: July 11, 2017
    Assignee: NORAMCO, INC.
    Inventors: Jessica Cardot, Wen-Chen Zhang
  • PROCESS FOR THE PREPARATION OF OPIOID COMPOUNDS
    Publication number: 20150315204
    Abstract: The present invention is directed to a process for the preparation of opioid compounds such as buprenorphine, naltrexone, naloxone, nalbuphone, nalbuphine, and the like.
    Type: Application
    Filed: April 17, 2015
    Publication date: November 5, 2015
    Inventors: Jessica Cardot, Wen-Chen Zhang