Issued Patents All Time
Showing 51–54 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4647675 | Rhodamine dyes | Andreas Oberlinner | 1987-03-03 |
| 4603202 | Fluoran colorants for recording systems | Andreas Oberlinner | 1986-07-29 |
| 4477381 | Triaminotriarylmethane colorants | Erwin Hahn, Joachim Jesse | 1984-10-16 |
| 4353833 | Cationic dyes | Horst Bruder, Hans-Juergen Degen, Franz Feichtmayr, Klaus Grychtol | 1982-10-12 |