Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6727308 | Laser-markable plastics | Helge Kniess, Dieter Heinz, Reiner Delp, Gerhard Pfaff | 2004-04-27 |
| 6677042 | Polymer beads | David Coates, Simon Greenfield, John Patrick | 2004-01-13 |