Patents by Inventor David M. Hollinshead

David M. Hollinshead 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).

  • Cephem compounds
    Patent number: 5219848
    Abstract: Cephalosporin antibiotics having a 3-position substituent of the formula: ##STR1## are described, wherein X is --CO--, --SO.sub.2 -- or --COCH.sub.2 --; Y is --CO--, --SO.sub.2 -- or --CH.sub.2 --; Q is a benzene, pyridine or naphthalene ring, R.sup.1 and R.sup.2 are ortho with respect to each other and are independently hydroxy or of the formula O--M wherein M is a moiety and the O--M bond is cleavable in vivo and ring Q may be further substituted by a variety of atoms and groups. Processes for their preparation and use are described.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: June 15, 1993
    Assignees: ICI Pharma, Imperial Chemical Industries PLC
    Inventors: Laurent F. A. Hennequin, David M. Hollinshead