Self-expiring identification bands and methods of use thereof
US11699362B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2021 |
| Grant date | Jul 11, 2023 |
| Priority date | — |
| Expiry date | May 6, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2003/028
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A self-expiring band structure is activated upon the contacting of two chemical constituents together. This contacting may be performed by the attachment action of the band or independently thereof. After a time duration has passed, the coaction of the chemical constituents result in a visually perceptible change can alert others to the fact the band has expired. These bands may be both printable, such as by a printer or other machine printing, as well as time-expiring making them a very versatile product that offer heightened security at the price point closer to that of a disposable item because they do not require complex infrastructure for validation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.