Patents by Inventor David Austen Perry

David Austen Perry 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).

  • Antiparasitic agents related to the milbemycins and avermectins
    Patent number: 5981500
    Abstract: A 5-oximino-25-substituted avermectin B1 or B2 monosaccharide of formula I herein has use in the treatment of parasitic infections in animals and humans. The compounds may be prepared from corresponding 5-keto substituted derivatives.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: November 9, 1999
    Assignee: Pfizer Inc.
    Inventors: Bernard Frank Bishop, Michael Stephen Pacey, David Austen Perry