Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6652597 | N-vinyl-containing polymeric tanning materials | Anton Negele, Gerhard Wolf, Axel Kistenmacher | 2003-11-25 |
| 6316533 | Composition for treating tanned leather, and its preparation | Gerhard Wolf, Thomas Grosser, Adolf Stubinger, Jürgen Werner, Erhard Guenther | 2001-11-13 |