Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5616624 | Preparation of bead-form expandable styrene polymers having improved expandability | Michael Witt, Dietrich Scherzer, Klaus Hahn | 1997-04-01 |
DN
Dieter Naegele
Overall (1997): #159,216 of 185,788Top 90%
1
Patents 1997