Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8673114 | Method for producing a watermark element, watermark element, and also applications | Hendrik Van de Kamp, Jan Marius Van Dokkum | 2014-03-18 |
| 7032828 | Substrate which is made from paper and is provided with an integrated circuit | Wilhelm Bernardus de Hesse, Marco Matters, Cornelis M. Hart, Dagobert Michel De Leeuw | 2006-04-25 |
| 6848618 | Security facility and uses thereof | — | 2005-02-01 |
| 6830192 | Substrate which is made from paper and is provided with an integrated circuit | Cornelius Maria Hart, Dagobert Michel De Leeuw, Wilhelm Bernardus de Hesse, Marco Matters | 2004-12-14 |