Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6402888 | Security paper comprising localized areas with reduced thickness and opacity, and method for making same | Pierre Doublet, Yves Douesneau | 2002-06-11 |
| 5275870 | Watermarked plastic support | Christophe Halope, Alain Barthez | 1994-01-04 |