Issued Patents All Time
Showing 51–75 of 186 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5602284 | Process for separating off aminobiphenyl from diphenylamine | Frank Arndt, Rudolf Wiemers | 1997-02-11 |
| 5585471 | Method for preparing a mixture of .alpha.- and .beta.-chloroethyl-glucopyranose | Klaus Szablikowski, Martin Lohrie, Wolfgang Koch, Reinhard Langer | 1996-12-17 |
| 5583251 | Process for the production of isocyanates and for the production of light-colored foams therefrom | Manfred Gallus, Herbert Gebauer, Otto Immel, Christine Mendoza-Frohn, Reinhard Langer | 1996-12-10 |
| 5550278 | Process for working up the liquid reaction products from the cu-catalysed preparation of dimethyl carbonate | Johann Rechner, Paul Wagner, Alexander Klausner | 1996-08-27 |
| 5527942 | Process for the production of aryl carbonates | Pieter Ooms, Norbert Schon | 1996-06-18 |
| 5523451 | Process for the continuous preparation of aryl carbonates | Johann Rechner, Norbert Schon, Paul Wagner, Stephan Kabelac | 1996-06-04 |
| 5508442 | Reactor and continuous process to be carried out therewith for the preparation of ethylene glycol carbonate and propylene glycol carbonate | Paul Wagner, Christine Mendoza-Frohn | 1996-04-16 |
| 5502232 | Process for preparing diaryl carbonates | Joachim Dohm, Carsten Hesse, Johann Rechner, Dieter Kaufmann | 1996-03-26 |
| 5498742 | Process for the continuous preparation of diaryl carbonates | Carsten Hesse, Johann Rechner, Reinhard Schomacker, Paul Wagner, Dieter Kaufmann | 1996-03-12 |
| 5495038 | Process for the purification of diphenyl carbonate | Christine Mendoza-Frohn, Johann Rechner, Norbert Schon | 1996-02-27 |
| 5489696 | Process for purifying ethylene glycol carbonate (EGC) by adsorption on activated carbon | Christine Mendoza-Frohn, Paul Wagner | 1996-02-06 |
| 5484903 | Process for the production of polysaccharide carbonates | Klaus Szablikowski, Alexander Klausener | 1996-01-16 |
| 5484576 | Fixed bed reactors having a short catalyst bed in the direction of flow | Reinhard Langer, Paul Wagner | 1996-01-16 |
| 5478961 | Process for preparting aryl carbonates | Pieter Ooms, Norbert Schon | 1995-12-26 |
| 5473094 | Process for preparing aryl carbonates | Pieter Ooms, Norbert Schon | 1995-12-05 |
| 5463102 | Process for the continuous production of aryl carbonates | Norbert Schon, Johann Rechner, Paul Wagner, Hans-Erich Gasche, Ricarda Leiberich | 1995-10-31 |
| 5463034 | Polysaccharides, process for their preparation and their use | Alexander Klausener, Klaus Szablikowski, Klaus Balser, Michaela Wilke | 1995-10-31 |
| 5449791 | Process for the preparation of propylene glycol carbonate | Paul Wagner, Christine Mendoza-Frohn | 1995-09-12 |
| 5440066 | Process for splitting polycarbonates | Norbert Schon, Steffen Kuhling, Heinrich Hähnsen | 1995-08-08 |
| 5420241 | Process for the purification of polycarbonate and polyester carbonate solutions | Gerhard Fennhoff, Pieter Ooms, Ralf Pakull | 1995-05-30 |
| 5399600 | Stabilized, flame resistant polycarbonate moulding compounds | Gerd Fengler, Gerhard Fennhoff, Klaus Horn | 1995-03-21 |
| 5395976 | Process for the preparation of a mixture of cyclohexanone and cyclohexanol | Jurgen Scharschmidt, Christine Mendoza-Frohn, Rainer Klotzbucher | 1995-03-07 |
| 5391802 | Process for cleaving polycarbonates into bisphenols and diaryl carbonates | Norbert Schon, Steffen Kuhling | 1995-02-21 |
| 5391767 | Process for the preparation of alkylene carbonates | Franz-Josef Mais, Christine Mendoza-Frohn, Alexander Klausener | 1995-02-21 |
| 5386067 | Process for separating mixtures of m- and p-dichlorobenzene | Ursula Pentling, Lothar Puppe, Kai Rohlk, Rolf Grosser, Hans-Ingolf Paul | 1995-01-31 |