Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5429798 | Deodorization of used foam moldings, in particular fish crates | Michael Witt, Dietrich Scherzer, Klaus Hahn, Rolf Henn | 1995-07-04 |
| 4990539 | Preparation of styrene polymer foam particles | Klaus Hahn, Uwe Guhr, Roland Gellert | 1991-02-05 |