Selective chemical sensitive field effect transistor transducers
US4273636A · kind A · utility
61Cited by
3References
12Claims
0Family size
Inventors
Key dates
| Filing date | May 19, 1978 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | May 19, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/817
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A chemical sensitive field effect transistor transducer is provided having a semipermeable membrane on the surface of a chemical selective system overlying an insulated gate field effect transistor. Such a field effect transistor transducer is effective for the measurement of chemical constituents of factory waste water containing micro-particles, saliva or blood containing proteins, etc., where conventional devices give unreliable results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.