Radio frequency identification sensor for fluid level
US7456752B2 · kind B2 · utility
11Cited by
20References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 5, 2004 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | May 5, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor can detect the presence of fluid by the changing of the response characteristics of an RLC circuit. A window in the sensor is used to position a short caused by the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.