Patents by Inventor Charlotte R Evans

Charlotte R Evans 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).

  • Particulate materials for use in dentifrice compositions
    Patent number: 6479036
    Abstract: Silica particles for incorporation into a dentifrice composition, preferably as a thickening agent, have a polyether glycol such as polyethylene glycol applied thereto in order to enhance dentifrice cohesion
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: November 12, 2002
    Assignee: Crosfield Limited
    Inventors: Peter W Stanier, Charlotte R Evans