Patents Examined by Rienhard J. Eisenzopf
  • Voltammetry in low-permitivity suspensions
    Patent number: 4928065
    Abstract: A method and apparatus for classifying non-aqueous liquid suspensions of charged particles employs a large time-varying electric field applied to a suspension situated between capacitive test electrodes. A current waveform is produced that characterizes the suspension with respect to critical properties including concentration, mobility, and plating tendencies of the charged particles suspended therein. The approach is suitable for use with suspensions having relative permitivity constants of about 15 or less.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: May 22, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Gregg A. Lane, Kathryn Pearlstine