Patents by Inventor John Francis Paul Andrews

John Francis Paul Andrews 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 resolution of etodolac using glucamine derivatives
    Patent number: 5811558
    Abstract: The subject invention pertains to a process for the resolution of etodolac comprising the use of the resolving agent glucamine or a N-(C.sub.1-4 alkyl)-glucamine. The subject invention also concerns a process for converting a single enantiomer of etodolac into the racemate. The method comprises forming all ester of the carboxylate function of the enantiomer and treating with an acid or base.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: September 22, 1998
    Assignee: Chiroscience Limited
    Inventors: Brian Michael Adger, Ulrich Conrad Dyer, Martin Woods, John Francis Paul Andrews, Helen Frances Baker