Patents by Inventor Stephen C. Mason

Stephen C. Mason 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).

  • Dentrifice composition
    Patent number: 4992258
    Abstract: A dentifrice for treatment of hypersensitive dentine containing montmorrolinite clay.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: February 12, 1991
    Assignee: Colgate-Palmolive Company
    Inventor: Stephen C. Mason