Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6001831 | Process for producing quinazoline derivatives | Theodor Papenfuhs, Ralf Pfirmann, Stefan Krause | 1999-12-14 |
| 5973189 | Monoesters of carboxymethylene anthranilic acids and process for preparing the same | Theodor Papenfuhs, Ralf Pfirmann, Stefan Krause | 1999-10-26 |
| 5945556 | Process for preparing N-carboxymethylene-4-chloro-anthranilic acid and its dialkyl esters | Theodor Papenfuhs, Ralf Pfirmann, Stefan Krause | 1999-08-31 |
| 5821385 | Process for the preparation of N-(2-carboxy-5-chloro-phenyl)glycine | Stefan Krause, Theodor Papenfuhs | 1998-10-13 |
| 5811572 | Process for the preparation of N-carboxymethyleneanthranilic acid | Theodor Papenfuhs, Andreas Dierdorf, Stefan Krause | 1998-09-22 |