Patents by Inventor Maurice Shamma

Maurice Shamma 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).

  • Oxybisberberine and a process for its production
    Patent number: 4087426
    Abstract: Berberine and protoberberine analogs thereof are oxidatively dimerized in the presence of a base. Treatment of the dimer with alkanolic anhydrous acid yields the corresponding 8-alkoxyberberine (or protoberberine) phenol betaine which, in turn, may be converted to alpha and beta hydrastine.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: May 2, 1978
    Assignee: Research Corporation
    Inventors: Maurice Shamma, Jerome L. Moniot