Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1992-12-08
1994-07-05
Niebling, John
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204403, 204412, 204414, 204416, G01N 2726
Patent
active
053264509
ABSTRACT:
A miniaturized oxygen electrode which comprises: an electrically insulating substrate; an electrolyte-containing material disposed on the substrate and capable of serving as an electrolytic solution when supplied with water; a set of component electrodes disposed on the substrate and composed of a first component electrode on which a reduction reaction of oxygen dissolved in the electrolytic solution occurs when the miniaturized oxygen electrode is operated and one or more second component electrodes other than the first component electrode, the first component electrode being interconnected with the second component electrodes through the electrolyte-containing material; an oxygen gas-permeable membrane covering the electrolyte-containing material; and the electrolyte-containing material having a length for providing a sufficient distance along the interconnection between the first and second component electrodes such that any electroactive substances, formed on one of the first and second component electrodes during the operation of the miniaturized oxygen electrode, are prevented from reaching the other of the first and second component electrodes when diffusing along the length of the electrolytic solution.
REFERENCES:
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patent: 4874500 (1989-10-01), Madou et al.
patent: 4975175 (1990-12-01), Karube et al.
Inspec Database Abstract No. A86097437, Institute of Electrical Engineers, London, GB; S. J. Pace et al.: "A Thick-Film Multi-Layered Oxygen Sensor" and Transducers '85-1985 International Conference on Solid State Sensors and Actuators Digest of Technical Papers (Cat. No. 85 CH2127-9) 1985, IEEE, New York, N.Y., pp. 406-409.
World Patents Index Latest Derwent Publications Ltd., London, GB; Database WPIL, Accession No. 90-330569, week 9044; and JP-A-2 236154 (Fujitsu) Aug. 19, 1990.
Patent Abstracts of Japan, vol. 14, No. 554 (P-1140), Mar. 9, 1989 and JP-A-2 236154 (Fujitsu) Aug. 19, 1990.
C. S. Cha et al.: "Problems Associated with the Miniaturization of a Voltammetric Oxygen Sensor: Chemical Crosstalk Among Electrodes," Sensors and Actuators B. 2 (0925-4005/90), 1990, pp. 239-242.
Patent Abstracts of Japan, vol. 11, No. 223 (P-597), Jul. 21, 1987 (JP 62-039755, Feb. 20, 1987).
Kojima Naomi
Sugama Akio
Suzuki Hiroaki
Bell Bruce F.
Fujitsu Limited
Niebling John
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