Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6162928 | Preparation of pyrroles | Joachim Wulff-Doring, Michael Hesse, Peter Wahl | 2000-12-19 |
| 6160178 | Racemization of optically active amines | Hartmut Riechers, Arthur Hohn, Andreas Kramer, Frank Funke, Wolfgang Siegel +1 more | 2000-12-12 |
| 6153797 | Racemizing of optically active amines | Hartmut Riechers, Arthur Hohn, Andreas Kramer, Frank Funke, Wolfgang Siegel +1 more | 2000-11-28 |
| 6111100 | Preparation of bis(2-morpholinoethyl) ether | Hartmut Riechers, Andreas Henne, Arthur Hohn | 2000-08-29 |
| 6093677 | Catalyst for dehydrogenating 1,4-butanediol to .gamma.-butyrolactone | Hans Jochen Mercker, Frank-Friedrich Pape, Andreas Henne, Michael Hesse, Ulrich Kohler +3 more | 2000-07-25 |
| 6049007 | Racemization of optically active amines | Hartmut Riechers, Arthur Hohn, Andreas Kramer, Frank Funke, Wolfgang Siegel +1 more | 2000-04-11 |
| 5993569 | Silicon-containing iron powders | Reinhold Schlegel, Bernd Leutner | 1999-11-30 |
| 5955620 | Dehydrogenation of 1,4-butanediol to .gamma.-butyrolactone | Hans Jochen Mercker, Frank-Friedrich Pape, Andreas Henne, Michael Hesse, Ulrich Kohler +3 more | 1999-09-21 |
| 5917039 | N-alkylation of amines | Rainer Becker, Rolf Lebkucher, Horst Neuhauser | 1999-06-29 |
| 5910612 | Preparation of anhydrous 2-amino-1-methoxypropane | Andreas Henne, Heinz Lingk | 1999-06-08 |
| 5870646 | Apparatus for developing photographic material | — | 1999-02-09 |
| 5861506 | Compostable and thermoplastic cellulose ether-2-hydroxycarboxylic acid esters and mixed esters | Hanns P. Muller, Rainhard Koch, Dirk Dijkstra, Jurgen Engelhardt, Volkhard Muller | 1999-01-19 |
| 5847131 | Preparation of N-substituted cyclic amines | Roman Dostalek, Heinz Lingk, Rainer Becker, Andreas Henne, Rolf Lebkucher +3 more | 1998-12-08 |
| 5698612 | Thermoplastically workable, biodegradable moulding compositions | Hanns P. Muller, Dirk Dijkstra, Jurgen Engelhardt, Volkhard Muller, Gunter Weber | 1997-12-16 |
| 5387959 | Unit for developing photographic paper | — | 1995-02-07 |
| 4509166 | PCM Communication system and method of operation | — | 1985-04-02 |
| 4449217 | PCM Communication system and method of operation | — | 1984-05-15 |
| 4255038 | Holder for photographic processing machines | Herman Held, Wilhelm Stoye | 1981-03-10 |
| 4221346 | Feeder magazine for continuously operating film-developing machines | Werner Wachholder, Hans-Georg Seifert | 1980-09-09 |