Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5266682 | Nitrogen-containing surface-active agents | Heinz Uhrig, Dieter Schnaitmann, Hans Joachim Metz | 1993-11-30 |
| 4939238 | Nitrogen-containing condensation products based on unmodified or modified natural resins, process for the preparation thereof and the use thereof | Heinz Uhrig, Reinhold Deubel | 1990-07-03 |
| 4515639 | Azo pigment formulations | Peter Dopfer, Johann Ostermeier | 1985-05-07 |