Film structure with protection against manipulation
US11386812B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 2017 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Feb 11, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2003/0276
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A film structure with protection against manipulation includes a top film, a laser-inscribable layer which is arranged on the bottom side of the top film, and also a bottom film and a connecting layer for connecting the bottom film to the top film and the laser-inscribable layer. The connecting layer is arranged between the laser-inscribable layer and the bottom film. The film structure has an inscribed region and an uninscribed region. The top film is fused with the bottom film in the inscribed region of the film structure. As a result, it is virtually impossible to separate the top film with the inscribed layer from the bottom film without destruction in the event of a manipulation attempt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.