Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7905964 | Method for the passivation of metal surfaces with compositions comprising polymers with acid groups and waxes | Helmut Witteler, Walter Bertkau, Thomas Heidenfelder | 2011-03-15 |