Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6555683 | Condensation products based on amino-s-triazines and the use thereof | Josef Weichmann, Alfred Kern | 2003-04-29 |
| 5558709 | Flow improving agents for binder suspensions containing cement | Josef Weichmann, Alfred Kern | 1996-09-24 |