Chemical sensors and their divided parts
US5078855A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1988 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | Oct 13, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/414
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A chemical sensor includes a field effect-type transistor. An extended gate electrode is connected to a gate electrode of the transistor. A sensitive membrane is provided on at least a part of the extended gate electrode. The sensor also includes a reference electrode. Both the extended gate and reference electrodes are formed on a substrate different from the substrate on which the transistor is formed. Divided parts for the chemical sensor wherein the parts of the sensor except for the reference electrode are made independent are also disclosed and claimed. Sensors for simultaneously sensing a number of different chemical substances in a single sample are also disclosed and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.