Patents by Inventor Jeffrey T. Simpson

Jeffrey T. Simpson 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).

  • Fluoride sensing electrodes with longer service life, retrofittable shields therefor, and processes utilizing such electrodes
    Patent number: 5565076
    Abstract: The service life of a conventional free fluoride ion sensitive electrode can be improved by shielding the outer casing of the conventional electrode against contact with the liquid composition in which the free fluoride ions concentration is to be measured, particularly when the solution is a hot acid solution containing surfactants and/or oxidizing agents, such as is normally used for cleaning aluminum beverage containers or providing a protective surface treatment to aluminum surfaces.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: October 15, 1996
    Assignee: Henkel Corporation
    Inventors: Joseph C. Topping, Jeffrey T. Simpson