Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6565645 | Water-resistant hydraulically setting compositions | Johann Klein, Gaby Schilling, Wolfgang Klauck, Hans-Peter Sattler | 2003-05-20 |
| 5665290 | Process for manufacturing brick mouldings | Thomas Koslowski | 1997-09-09 |