Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8182598 | Violet colorant for colour filters, inks for ink-jet electrophotographic toners and developers and e-inks | Hans-Tobias Macholdt, Magali Meder | 2012-05-22 |
| 7285663 | β-Isoindigo coloring agent | Hans Joachim Metz | 2007-10-23 |