Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7026307 | Method for producing 1,3-disubstituted 2-nitroguanidines | Jörn Stölting, Wolfram Sirges, Armin Heyn, Torsten Taschner | 2006-04-11 |
| 6720451 | Method for producing N-methyl-N′-nitroguanidine | Wolfram Sirges | 2004-04-13 |
| 6528651 | Method for production of 1,3-disubtituted 2-nitroguanidines | Wolfram Sirges, Detlef Wollweber | 2003-03-04 |
| RE36607 | Pyrrolidine compounds and process of preparing | Joachim Mittendorf, Peter Fey, Bodo Junge, Johannes Kaulen, Heinrich Meier +1 more | 2000-03-07 |
| 5952498 | Process for the preparation of enantiomerically pure cycloalkano-indol -and azaindol -and pyrimido 1,2a! indolcarboxcyclic acids and their activated derivatives | Jan-Bernd Lenfers, Peter Fey, Paul Naab | 1999-09-14 |
| 5910593 | Highly selective process for the preparation of enantiomerically pure phenylsubstituted 1,4-dihydropyridine-3,5-dicarboxylic acid derivatives | Joachim Mittendorf, Peter Fey, Bodo Junge, Johannes Kaulen, Heinrich Meier +1 more | 1999-06-08 |