Patents by Inventor Steven N. Crichton

Steven N. Crichton 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).

  • Tile glaze
    Patent number: 6132832
    Abstract: The present invention provides a glaze composition for use in forming glossy ceramic tiles which exhibit excellent scratch resistance. The glaze composition comprises a glass component that when fired produces a glaze layer containing oxides having a spinel crystalline structure and residual glass. The glaze displays an opaque or semiopaque finish.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: October 17, 2000
    Assignee: Ferro Corporation
    Inventors: Steven N. Crichton, Paolo Bertocchi, Yuan Cao