Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6656994 | Use of polysulfide-free preparations as an additive for loam or clay-based construction materials | Stefan Dreher, Joachim Roser, Joachim Pakusch, Karl Boettger | 2003-12-02 |