Tunable capacitance-based temperature sensor
US11913845B2 · kind B2 · utility
0Cited by
25References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2021 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Feb 7, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K3/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature indicator includes a first capacitor configured to change capacitance when exposed to a temperature above a first threshold temperature, a second capacitor configured to change capacitance when exposed to a temperature above a second threshold temperature. The first capacitor is electrically connected to the second capacitor. The second threshold temperature is different than the first threshold temperature. The first capacitor and the second capacitor retain their changed capacitance permanently after they return to a temperature below their respective threshold temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.