Two dimensional barcode provided with dynamic environmental indicator provided within a gap
US11120241B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2019 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Sep 20, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F3/0298
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A sensor-augmented two-dimensional barcode includes a layer provided on a substrate comprising a two-dimensional error-correcting barcode symbol. The bar code symbol further includes a barcode region, an empty region, and a dynamic region. The barcode region includes a plurality of modules in a static color state and the empty region has an area. Additionally, the dynamic region is provided on the substrate and positioned within the area of the empty region. The dynamic region includes a dynamic indicator having a chemistry that is configured, responsive to the occurrence of an environmental condition, to undergo a chemical or physical state change between an initial state and an end state, causing a change in the color state of the dynamic indicator. Additionally, the color state indicates exposure to the environmental condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.