Issued Patents All Time
Showing 26–50 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6716933 | Working up of polymer synthesis solutions | Wolfgang Alewelt, Wolfgang Ebert, Thomas Fritz, Dirk Jahn, Stefan Westernacher +1 more | 2004-04-06 |
| 6605191 | Method for reprocessing reaction mixtures containing diaryl carbonate | Carsten Hesse, Ursula Jansen, Claus-Peter Reisinger, Rob Eek, Kaspar Hallenberger +1 more | 2003-08-12 |
| 6548445 | Supported catalysts containing a platinum metal and process for preparing diaryl carbonates | Hans-Josef Buysch, Carsten Hesse, Jorg-Dietrich Jentsch, Eberhard Zirngiebl | 2003-04-15 |
| 6509510 | Method for hydrogenating aromatic polymers in the presence of special catalysts | Volker Wege, Eberhard Zirngiebl | 2003-01-21 |
| 6469191 | Method for producing diaryl carbonates | Claus-Peter Reisinger, Ursula Jansen, Rob Eek | 2002-10-22 |
| 6437166 | Method for reprocessing reaction mixtures containing diaryl carbonate | Carsten Hesse, Ursula Jansen, Claus-Peter Reisinger, Rob Eek, Kaspar Hallenberger +1 more | 2002-08-20 |
| 6420491 | Method for hydrogenating aromatic polymers in the presence of hydrocarbons which contain oxygen | Volker Wege, Eberhard Zirngiebl | 2002-07-16 |
| 6417287 | Method for hydrogenating aromatic polymers | Volker Wege | 2002-07-09 |
| 6365694 | Amorphous vinyl cyclohexane polymers | Volker Wege, Ralf Dujardin, Yun Chen, Friedrich-Karl Bruder | 2002-04-02 |
| 6291392 | Catalysts containing a platinum group metal and produced in a sol-gel method, as well as a method for producing diarylcarbonates | Carsten Hesse, Ulrich Notheis | 2001-09-18 |
| 6242632 | Supported catalysts containing a platinum group metal and method for producing diarylcarbonates | Carsten Hesse, Ulrich Notheis | 2001-06-05 |
| 6177538 | Method for producing tetrabutyl ammonium phenolate diphenol adduct | Carsten Hesse, Ursula Jansen | 2001-01-23 |
| 6071843 | Process for reactivating catalyst systems containing a platinum group metal | Hans-Josef Buysch, Carsten Hesse | 2000-06-06 |
| 6001768 | Supported catalysts containing a platinum metal and process for preparing diaryl carbonates | Hans-Josef Buysch, Carsten Hesse, Jorg-Dietrich Jentsch, Eberhard Zirngiebl | 1999-12-14 |
| 5990246 | Transparent materials consisting of hydrogenated products of ring-opened metathetical polymers with polar substituents | Yun Chen, Ralf Dujardin, Friedrich-Karl Bruder | 1999-11-23 |
| 5965472 | Recovery of catalyst systems from diaryl carbonate-containing reaction solutions by suspension crystallization | Hans-Josef Buysch, Carsten Hesse, Hans-Peter Wirges | 1999-10-12 |
| 5856554 | Process for producing diaryl carbonates | Hans-Josef Buysch, Carsten Hesse | 1999-01-05 |
| 5824816 | Recovery of catalyst systems from diarylcarbonate-containing reaction mixtures by melt crystallization | Hans-Josef Buysch, Carsten Hesse, Hans-Peter Wirges | 1998-10-20 |
| 5821377 | Process for the continuous production of diaryl carbonates | Hans-Josef Buysch, Carsten Hesse | 1998-10-13 |
| 5739258 | Process for preparing diaryl carbonates and the polycarbonates obtainable therefrom | Gottfried Zaby, Hans-Josef Buysch, Steffen Kuhling, Carsten Hesse | 1998-04-14 |
| 5712406 | Method of extractive separation of diaryl carbonates and the original aromatic hydroxy compounds from reaction solutions | Hans-Josef Buysch, Carsten Hesse | 1998-01-27 |
| 5663408 | Process for preparing diaryl carbonates | Hans-Josef Buysch, Carsten Hesse | 1997-09-02 |
| 5625091 | Process for the production of diaryl carbonates | Hans-Josef Buysch, Carsten Hesse | 1997-04-29 |
| 5550278 | Process for working up the liquid reaction products from the cu-catalysed preparation of dimethyl carbonate | Paul Wagner, Hans-Josef Buysch, Alexander Klausner | 1996-08-27 |
| 5523451 | Process for the continuous preparation of aryl carbonates | Norbert Schon, Paul Wagner, Hans-Josef Buysch, Stephan Kabelac | 1996-06-04 |