Security document and manufacturing method thereof
US11712917B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2020 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | Jul 7, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D25/378
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention relates to the technical field of security documents comprising a security feature, such as a windowed security thread, a security foil, a security patch, a hologram or an ink printed security feature, and a protective coating, and methods of manufacturing of said security documents. The security feature has a security feature thickness tf of at least about 5 μm (micrometers) and a security feature surface facing away from the substrate consisting of a first region adjacent to the edges of the security feature and a second region non-adjacent to the edges of the security feature. The protective coating covers the security feature surface facing away from the substrate, a first substrate surface adjacent to the edges of the security feature, and a second substrate surface, which is different from the substrate surface covered by the security feature and the first substrate surface. The protective coating covering the security feature surface facing away from the substrate and the first substrate surface is transparent, the protective coating covering the first region has a thickness tb1, the protective coating covering the second region has a thickness tb2, the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.