Patents by Inventor Stuart R. Rigby

Stuart R. Rigby 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 microbial reduction producing 4(S)-hydroxy-6(S)methyl-thienopyran derivatives
    Patent number: 5580764
    Abstract: A compound of formula ##STR1## in which X is hydrogen or a group of formula --SO.sub.2 NH.sub.2 is reduced to the trans (4S,6S) form of the corresponding alcohol by an enzyme reduction system.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: December 3, 1996
    Assignee: Zeneca Limited
    Inventors: Robert A. Holt, Stuart R. Rigby