Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5917035 | Oxazine dyes, their preparation and the use thereof | Gerhard Hanika, Alex Nicopoulos | 1999-06-29 |
| 5284939 | Process for the preparation of highly concentrated solutions of cationic azo dyes | Alex Nicopoulos, Gerhard Hanika | 1994-02-08 |