Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837359 | Process for the production of polyisocyanates with biuret structures | Klaus Konig, Josef Pedain, William E. Slack | 1989-06-06 |
| 4831075 | Leather treatment agent | Harro Traubel, Hans-Werner Muller | 1989-05-16 |
| 4810251 | Fatliquoring solution dispersion or emulsion and a process for treating leather therewith | Harro Traubel, Hans-Werner Muller, Hans J. Focks | 1989-03-07 |