Patents by Inventor Stephen F. McClanahan

Stephen F. McClanahan 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).

  • Anticalculus compositions
    Patent number: 5068100
    Abstract: Disclosed are oral compositions containing phosphocitrate to provide improved anticalculus activity.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: November 26, 1991
    Assignee: The Procter & Gamble Company
    Inventor: Stephen F. McClanahan
  • Anticalculus compositions
    Patent number: 4990328
    Abstract: Disclosed are oral compositions containing phosphocitrate to provide improved anticalculus activity.
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: February 5, 1991
    Assignee: The Procter & Gamble Company
    Inventor: Stephen F. McClanahan