Powerless time reference
US9880523B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2014 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Jun 16, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N17/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
According to an embodiment, a time reference device is provided. In the embodiment, the time reference device, includes a corrodible element, wherein a corrosion of the corrodible element advances with advancing time, and a sensor configured for providing a sensor signal, the sensor signal depending on a physical property of the corrodible element; wherein the physical property of the corrodible element changes with a corrosion of the corrodible element and the physical property of the corrodible element is at least one of an electrical property, a magnetic property, and an optical property. A barrier may be provided for defining a permeability for a corrosive substance to the corrodible element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.