United States Patent | 5,334,351 |
Heinze, et. al. | Aug. 2, 1994 |
Inventors: | Heinze; Jurgen (Freiburg, DEX); Synowczyk; Andreas W. (Bad Krozingen, DEX). |
Assignee: | Dragerwerk Aktiengesellschaft (Lubeck, DEX). |
Appl. No.: | 081,127 |
Filed: | Jun. 25, 1993 |
Jun. 27, 1992 [DEX] | 4221233 |
Dec. 10, 1992 [DEX] | 4241438 |
Intl. Cl.: | G01N 27/00; G01N 31/00; |
U.S. Cl.: | 422/90.; 422/98.; |
Field of Search: | 82.02;82.01;90;98 |
0398286 | Nov., 1990 | EPX | |
4114536 | Nov., 1991 | DEX |
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A sensor detects analytes in a fluid medium by measuring the conductivity of a layer on a carrier with the layer contacting an electrode pair. The layer interacts with the analyte and is improved in that the sensor has a long-term stability and the indication provided by the sensor is completely reversible. The layer is a fullerene layer.