Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6599355 | Interference pigments with great color strength | Christoph Schmidt, Klaus Bernhardt, Sabine Schoen | 2003-07-29 |
| 6579355 | Interference pigments | Christoph Schmidt, Klaus Bernhardt | 2003-06-17 |