Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6943247 | Building material compositions | Rene Kiesewetter, Hartwig Schlesiger, Gunter Weber, Werner Lange | 2005-09-13 |
| 6880772 | Process and apparatus for combined milling and drying | Hartwig Schlesiger, Gerd Sonnenberg, Rudolf Heidemann | 2005-04-19 |