Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703135 | Production of expanded polyolefin beads | Jurgen Schweinzer, Joachim Fischer, Wolfram Kogel | 1997-12-30 |
IG
Isidoor De Grave
Overall (1997): #138,033 of 185,788Top 75%
1
Patents 1997