Patents by Inventor Louis P. Reiff

Louis P. Reiff 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 of making carfentanil and related analgesics
    Patent number: 5106983
    Abstract: An improved process or method of synthesis of carfentanil and other potent nalgesics of the N-alkyl 4-substituted 4-piperidinylamide class which can be used as morphine substitutes.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: April 21, 1992
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Louis P. Reiff, Paul B. Sollman