Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5641879 | Phthalocyanines substituted by phosphorus-containing groups | Heinz Wolleb, Beat Schmidhalter, Heinz Spahni | 1997-06-24 |
| 5391762 | Nir dyes, methods of preparing them and their use | Rudolf Naef, Beat Schmidhalter | 1995-02-21 |
| 5266699 | NIR dyes, methods of preparing them and their use | Rudolf Naef, Beat Schmidhalter | 1993-11-30 |