Patents by Inventor Kim W. Zerby

Kim W. Zerby 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).

  • Diphosphonic acid esters as tartar control agents
    Patent number: 5451401
    Abstract: Polyphosphonic acid ester compounds with flavorant, coolant and/or sweetener components, and tartar, plaque and/or calculus control compositions with improved taste comprising one or more polyphosphonic acid ester compounds are described.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: September 19, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Kim W. Zerby, Jeffrey C. Hayes