Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5985943 | Expandable polystyrene particles | Klaus Hahn, Dieter Naegele, Achim Löffler, Manfred Gurtler, Hagen Schmitt +1 more | 1999-11-16 |
| 5124365 | Finely divided, expandable styrene polymers | Kurt Rappold, Manfred Walter | 1992-06-23 |