Secure multi-layered structure comprising multiple apertures
US12285966B2 · kind B2 · utility
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2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2020 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Mar 2, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D25/435
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A secure multi-layered structure (14), for example, for a secure document, the secure multi-layered structure comprising a first layer (20) having a first aperture (25) opened in the first layer, a second layer (30) having a second aperture (35) opened in the second layer, and a third layer (40) having a third aperture (45) opened in the third layer, wherein each layer at least partially overlaps with the layer adjacent to it, at least a portion of the third layer being visible through the first aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.