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| Number | Title | Issue Date |
| 5425867 | Method and apparatus for producing electrochemical impedance spectra A method for producing electrochemical impedance spectra. Spontaneously occuring coupling current noise between an array of electrodes which may be of substantially the same material is detected. A time domain record of the detected current noise is store... | 06/20/1995 |
| 5286357 | Corrosion sensors A corrosion sensor (1), apparatus for detecting corrosion of a surface incorporating the sensor, a structural assembly (1,21) incorporating the sensor and method for detecting corrosion of a surface employing the sensor are provided. The sensor comprises ... | 02/15/1994 |
