Ring oscillator based chemical sensor
US5895629A · kind A · utility
30Cited by
9References
15Claims
0Family size
Inventors
Key dates
| Filing date | Nov 25, 1997 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | Nov 25, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/4846
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A chemical sensor couples a material that changes temperature in response to a chemical condition with an oscillator. The oscillator is coupled to the material to detect the change in temperature in the material so that the frequency of the oscillator changes in correspondence with the change in temperature as an indication of the chemical condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.