Patents by Inventor Christina M. Calhoon

Christina M. Calhoon 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).

  • Clear dentrifice gel for interdental brushes
    Patent number: 5702686
    Abstract: A clear, mildly abrasive, low-viscosity dentrifice gel for use with twisted wire interdental brushes which comprises optimal humectant, silica abrasive and water concentration levels.
    Type: Grant
    Filed: July 18, 1995
    Date of Patent: December 30, 1997
    Assignee: John O. Butler Company
    Inventors: Kiyoshi Maekawa, Christina M. Calhoon