Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10131617 | Method for producing diaryl carbonates | Karl-Heinz Köhler, Ricarda Leiberich, Korbinian Krämer, Florian Lipski, Henning Kahnis +3 more | 2018-11-20 |
| 10125083 | Method for producing diaryl carbonates | Karl-Heinz Köhler, Ricarda Leiberich, Korbinian Krämer, Florian Lipski, Henning Kahnis +3 more | 2018-11-13 |
| 9765012 | Method for producing diaryl carbonate | Karl-Heinz Köhler, Henning Kahnis, Johan Vanden Eynde, Gabriel Denecker, Ricarda Leiberich +2 more | 2017-09-19 |
| 9040732 | Process for preparing diaryl carbonates from dialkyl carbonates | Andre Düx, Guenter Olf, Georg Ronge, Ricarda Leiberich, Johan Vanden Eynde +3 more | 2015-05-26 |
| 8952189 | Process for preparing diaryl carbonates or alkyl aryl carbonates from dialkyl carbonates | Andre Düx, Helmut Mothes, Georg Ronge, Rafael Warsitz, Pieter Ooms +1 more | 2015-02-10 |
| 8039659 | Processes for preparing diaryl and/or alkylaryl carbonates from dialkyl carbonates | Andre Düx, Pieter Ooms, Johann Rechner, Matthias Böhm, Georg Ronge +1 more | 2011-10-18 |
| 8022240 | Processes for purifying diaryl carbonates | Pieter Ooms, Johann Rechner, Matthias Böhm, Andre Düx, Georg Ronge +1 more | 2011-09-20 |
| 8003817 | Process for the preparation of diaryl carbonates or arylalkyl carbonates from dialkyl carbonates | Andre Düx, Pieter Ooms, Johann Rechner, Georg Ronge, Johan Vanden Eynde | 2011-08-23 |
| 6703473 | Process for producing polycarbonate | Uwe Hucks, Silke Kratschmer, Michael Prein, Steffen Kuhling | 2004-03-09 |
| 6673955 | Preparation of triethyl phosphate | Karl-Heinz Mitschke, Ottfried Schlak, Johannes Kaulen | 2004-01-06 |
| 6605191 | Method for reprocessing reaction mixtures containing diaryl carbonate | Carsten Hesse, Ursula Jansen, Johann Rechner, Claus-Peter Reisinger, Rob Eek +1 more | 2003-08-12 |
| 6437166 | Method for reprocessing reaction mixtures containing diaryl carbonate | Carsten Hesse, Ursula Jansen, Johann Rechner, Claus-Peter Reisinger, Rob Eek +1 more | 2002-08-20 |
| 6420465 | Process for preparing phosphoric acid esters | Nikolaus Janke, Reinhard Pech, Andreas Chrisochoou, Dieter Heinz, Werner Bäcker | 2002-07-16 |
| 6288284 | Method for producing bis(4-hydroxyaryl)alkanes | Rob Eek, Christine Mendoza-Frohn, Georg Ronge, Gerhard Fennhoff, Domien Sluyts +1 more | 2001-09-11 |
| 5785823 | Process for the purification of bisphenol | Kurt P. Meurer, Tony Osselaer, Werner Verhoeven, Johan Vaes, Ignace Hooftman +4 more | 1998-07-28 |
| 5734004 | Process for the purification of carbonic acid diaryl ester | Steffen Kuhling, Pieter Ooms, Hans-Josef Buysch, Gunther Jeromin | 1998-03-31 |
| 5696295 | Method for the preparation of ultra-pure bisphenol A and the use thereof | Claus Wulff, Heinrich Steude, Kurt P. Meurer, Tony van Osselaer, Jurgen Hinz +3 more | 1997-12-09 |
| 5562887 | Purification of alkyl nitrite-containing exhaust gases | Heinz Landscheidt, Paul Wagner, Alexander Klausener | 1996-10-08 |
| 5523452 | Process for preparing dimethyl carbonate | Zoltan Kricsfalussy, Heinrich Steude, Helmut Waldmann, Wolfram Wagner, Hans-Joachim Traenckner | 1996-06-04 |
| 5149890 | Process for the isolation of pure dinitrotoluenes | Gunther Rauchschwalbe, Heinz U. Blank, Ludwig Deibele, Gerhard Ruffert | 1992-09-22 |