Patents by Inventor Anthony C. Marshall

Anthony C. Marshall 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).

  • Heterocyclic-methylene-penems
    Patent number: 4774238
    Abstract: (5R) (Z)-6-(1-methyl,1,2,3-triazol-4-yl-methylene)-penem-3-carboxylic acid and its salts are provided in analytically pure crystalline form, and the salts in hydrated form, for example (5R) sodium (Z)-6-(1-methyl-1,2,3-triazol-4-yl-methylene)penem-3-carboxylate monohydrate.
    Type: Grant
    Filed: July 21, 1986
    Date of Patent: September 27, 1988
    Assignee: Beecham Group plc
    Inventors: Nigel J. P. Broom, Anthony C. Marshall