Watermarked plastic support
US5275870A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 1992 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | May 7, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention concerns an imprintable, flexible, synthetic support bearing at least one authentication or security mark. This support comprises: PA0 a substrate of synthetic material PA1 at least one mark on at least one face of the support and consisting of at least one layer of a composition altering the substrate opacity, PA1 at least one layer of an imprintable pigment composition deposited on the face bearing the mark and optionally also on the substrate face without the mark, the mark being barely or not at all visible in reflected light and perfectly visible in transmitted light. Application to the security of synthetic paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.