Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6326082 | Security document comprising a mixture of polyurethanes | Leo Vermeulen, Michel Boulonne, Walther Wouters, Huub Aert | 2001-12-04 |
| 6284350 | Optical card comprising an imaged layer | Leo Vermeulen, Michel Boulonne, Walther Wouters | 2001-09-04 |