Patents by Inventor Patricia C. Renaud

Patricia C. Renaud 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).

  • Electroosmosis techniques for removing materials from soil
    Patent number: 5074986
    Abstract: A method for removing contaminant material from a soil site in which one or more porous source electrodes and one or more porous sink electrodes are positioned within the soil site and voltage gradients are established among the electrodes. A purging liquid is supplied to the source electrodes so as to flow therefrom into the soil site, the voltage gradients causing the purging liquid to move by electroosmosis through the soil site toward the sink electrodes. The purging liquid displaces the contaminant material so as to cause the contaminant material to be moved from the soil site into the sink electrodes from which they can be removed, as by a pumping or siphoning action.
    Type: Grant
    Filed: June 6, 1989
    Date of Patent: December 24, 1991
    Assignee: Massachusetts Institute of Technology
    Inventors: Ronald F. Probstein, Patricia C. Renaud, Andrew P. Shapiro