Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6476089 | Expandable olefin bead polymers | Christian Maletzko, Klaus Hahn, Gerd Ehrmann, Franz-Josef Dietzen | 2002-11-05 |
| 6448300 | Expandable olefin bead polymers | Christian Maletzko, Klaus Hahn, Gerd Ehrmann, Franz-Josef Dietzen | 2002-09-10 |