Patents by Inventor Herman Ziffer

Herman Ziffer 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).

  • Method of introducing hydroxyl groups into artemisinin and its derivatives
    Patent number: 5171676
    Abstract: The fungus Beauveria sulfurescens has been employed to introduce hydroxyl groups into artemisinin and derivatives of artemisinin, an antimalarial. Hydroxylated derivatives of artemisinin and derivatives of artemisinin produced thereby possess antimalarial activity, and can serve as intermediates in the synthesis of further derivatives useful in treating malaria.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: December 15, 1992
    Assignee: The United States of America as represented by the Secretary of the Department of Health and Human Services
    Inventors: Herman Ziffer, Yulin Hu