Patents by Inventor Douglas F. Whitfield

Douglas F. Whitfield 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).

  • Antimicrobial compositions
    Patent number: 5939050
    Abstract: Antimicrobial compositions comprising at least two antimicrobial agents exhibit reduced MIC values relative to the MIC for the agents making up the combination when measured alone. The compositions are useful as therapeutic agents such as in oral hygiene products.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: August 17, 1999
    Assignee: Optiva Corp.
    Inventors: Lokanathan M. Iyer, James R. Scott, Douglas F. Whitfield