Patents by Inventor Frank Fontsere

Frank Fontsere 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 indolopyrones
    Patent number: 4148806
    Abstract: This invention relates to a novel process for preparing a group of novel substituted indolopyrones.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: April 10, 1979
    Assignee: Warner-Lambert Company
    Inventors: Richard E. Brown, Paul C. Unangst, Frank Fontsere, Arthur C. Fabian