Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6242646 | Method of producing 2,4-dichloro-5-hydroxyacetanilide | Hans-Jurgen Leitung, Stefan Krause | 2001-06-05 |
| 5264094 | Process for the preparation of fluorobenzenes | Ernst I. Leupold, Heinz Litterer | 1993-11-23 |
| 5100520 | Process for the preparation of thiophene derivatives | Steffen Dapperheld, Michael Feldhues, Heinz Litterer, Peter Wegener | 1992-03-31 |
| 4937395 | Process for the preparation of fluorobenzenes | Heinz Litterer, Hans Joachim Metz, Theodor Papenfuhs, Ernst I. Leupold | 1990-06-26 |