Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698603 | Expandable styrene polymers containing recycled material | Dietrich Scherzer, Klaus Hahn, Maria Lorenz | 1997-12-16 |
| 5616624 | Preparation of bead-form expandable styrene polymers having improved expandability | Dietrich Scherzer, Klaus Hahn, Dieter Naegele | 1997-04-01 |
| 5596045 | Expandable styrene polymers containing recycled material | Dietrich Scherzer, Wolfram Husemann, Klaus Hahn, Knut Kaempfer, Gerhard Alicke | 1997-01-21 |