Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5663226 | Rubber mixtures containing reinforcing additives, which additives include sulphur and silicon | Hermann-Josef Weidenhaupt, Ulrich Eisele | 1997-09-02 |
| 5650457 | Rubber mixtures incorporating sulphur-containing organosilicon compounds | Hermann-Josef Weidenhaupt | 1997-07-22 |