Patents by Inventor Allen J. M. Douglas

Allen J. M. Douglas 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).

  • Zwitterionic forms of trovafloxacin
    Patent number: 6066647
    Abstract: The invention relates to a non-hygroscopic polymorph of the following compound ##STR1## and to pharmaceutical compositions containing the above compound, methods of treating bacterial infections by administering the above compound, and to methods of preparing the above compound and related compounds.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: May 23, 2000
    Assignee: Pfizer Inc.
    Inventors: Allen J. M. Douglas, David B. Joseph, Timothy Norris