Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6562970 | Method for producing 4-chloro-6-hydroxypyrimidine | Gunther Cramm, Alexander Klausener, Guido Steffan | 2003-05-13 |
| 6525198 | Method for producing 4,6-dichloropyrimidine with sulfur compounds and phosphorus compounds | Alexander Klausener, Gunther Cramm, Guido Steffan | 2003-02-25 |
| 6504059 | Process for converting nitrobenzene to a free aminophenol | Albrecht Marhold, Guido Steffan | 2003-01-07 |