Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6326082 | Security document comprising a mixture of polyurethanes | Leo Vermeulen, Walther Wouters, Diane Vertruyen, Huub Aert | 2001-12-04 |
| 6284350 | Optical card comprising an imaged layer | Leo Vermeulen, Walther Wouters, Diane Vertruyen | 2001-09-04 |
| 5880760 | Method and device for printing information on substrates having security features | Guido Desie, Leon L. Vermeulen | 1999-03-09 |
| 5824447 | Apparatus for security printing using toner particles | Serge Tavernier, Dirk Broddin, Stefaan De Meutter, Leon L. Vermeulen | 1998-10-20 |