Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4803188 | Heterogeneous catalyst containing silicon dioxide | Hans-Peter Urbach, Karl-Heinz Eisenrith | 1989-02-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4803188 | Heterogeneous catalyst containing silicon dioxide | Hans-Peter Urbach, Karl-Heinz Eisenrith | 1989-02-07 |