Scratch-off design for tamper identification
US11593576B1 · kind B1 · utility
2Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2019 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Jun 12, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/09936
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An article is described herein which comprises a substrate, a character sequence disposed on the substrate, a scratch-off coating disposed at least in part over at least one portion of the character sequence, and at least one conductive trace disposed at least in part over the at least one portion of the character sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.