Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5348582 | Mineral building materials with additives | Joachim Herzig, Birger Knickel, Cornelia Dorzbach-Lange | 1994-09-20 |
| 4931099 | Self-levelling mortar mixture | Jurgen Dobbers, Karl Reizlein | 1990-06-05 |