Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6797014 | Lighfastness-improvement of dyeings on aluminum oxide layers | Günther Tscheulin | 2004-09-28 |
| 6797016 | Dye composition, their production and their use | Klaus Korte, Jurgen Geiwiz | 2004-09-28 |