Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6982044 | Method and composition for preventing traffic surfaces becoming slippery in winter | Josef Suren | 2006-01-03 |
| 5114475 | Method for the preparation of a fine-grained mixture having hydrophobic properties | Werner Siegmund, deceased, Oskar Schmitt, Volker Weidmann, Otto J. Friedrich | 1992-05-19 |