Tamper resistant system using ultraviolet fluorescent chemicals
US5605738A · kind A · utility
54Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1993 |
| Grant date | Feb 25, 1997 |
| Priority date | — |
| Expiry date | Sep 30, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31801
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A release agent is first applied to a target article and on top of the release agent is applied an ultraviolet radiation fluorescent material to enable fraud detection. To prevent fraud, a security label may also be used comprising a label substrate, a release layer, a layer of ultraviolet radiation fluorescent material, and an adhesive layer for adhering to a target article. When the substrate is peeled off, part of the ultraviolet sensitive material will be peeled off also to enable detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.