Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6648925 | Coloring agent comprising transition metals | Bernd Mayer, Horst Hoeffkes, Gertrud Ewald, Hans-Oscar Stephan, Melita Heller | 2003-11-18 |
| 6645316 | Post-passivation of a phosphatized metal surface | Jan-Willem Brouwer | 2003-11-11 |