Methods for verifying the authenticity of products
US12024825B2 · kind B2 · utility
0Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2021 |
| Grant date | Jul 2, 2024 |
| Priority date | — |
| Expiry date | Aug 1, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/1205
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a method of tagging a substrate with a covert, spectroscopically detectable security feature, wherein a liquid treatment composition comprising at least one acid is deposited onto a substrate, which comprises at least one external surface comprising a salifiable alkaline or alkaline earth compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.