2D bar code using active overlays
US12020097B1 · kind B1 · utility
0Cited by
26References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2023 |
| Grant date | Jun 25, 2024 |
| Priority date | — |
| Expiry date | Jan 31, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0614
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus, system, and method for adding an overlay to a bar code symbol is disclosed. The bar code symbol is affixed to a perishable host product. The overlay includes a transparent substrate and an environmental exposure indicator material which is responsive to an environmental stimulus. When the overlay is affixed to the bar code symbol, both static and dynamic data regarding the perishable host product can be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.