Dynamic optical property windows in indicia with sensors
US11734539B2 · kind B2 · utility
1Cited by
53References
20Claims
0Family size
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Key dates
| Filing date | Apr 5, 2021 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Apr 5, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/145
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An environmental exposure indicator includes a substrate and an environmental exposure indicator (“EEI”) material provided on the substrate that is configured to change an optical property between a creation state and an end state. The environmental exposure indicator material has a deployment state, between the creation state and the end state, at a deployment time. The environmental exposure indicator also includes calibration data based on the deployment state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.