AC Mode operation of chemfet devices
US4488556A · kind A · utility
17Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1982 |
| Grant date | Dec 18, 1984 |
| Priority date | — |
| Expiry date | Jun 3, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4148
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A chemically sensitive field effect device has its chemically selective system exposed to the material being investigated. The device is driven by a time varying, typically sinusoidal, current source. A protected reference electrode is also in contact with the body under investigation, and is biased at a predetermined DC level relative to the chemically sensitive field effect device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.