Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5840902 | Process for the preparation of beta-hydroxyalkypicolinium salts | Karlheinrich Meisel, Klaus Walz, Gerd-Friedrich Renner, Hans Schulze, Carsten Gerdes +2 more | 1998-11-24 |
| 4235773 | Trisazo dyestuffs containing a naphtholamino sulfonic acid component and a phenylcarbonylamino-phenyl component | Volker Huhne, Carl Taube | 1980-11-25 |