Issued Patents All Time
Showing 1–25 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7279544 | Transesterification process for the production of polycarbonates having a low content of volatile compounds | Melanie Mothrath, Helmut-Werner Heuer, Thomas König, Lydia Simon, Marc Buts +1 more | 2007-10-09 |
| 7060788 | Process for stripping monomers and other volatile constituents from polymer melts | Thomas König, Melanie Mothrath | 2006-06-13 |
| 6887968 | Process for the recycling of polycarbonates | Heinrich Hähnsen, Silke Kratschmer, Manfred Schraut | 2005-05-03 |
| 6887970 | Method for producing polycarbonates | Silke Kratschmer, Michael Prein | 2005-05-03 |
| 6835797 | Process for producing oligocarbonates | Rolf Bachmann, Franz Ferdinand Rhiel, Thomas Fischer, Silke Kratschmer | 2004-12-28 |
| 6770731 | Polycarbonate having pronounced shear thinning behavior | James P. Mason, Silke Kratschmer | 2004-08-03 |
| 6747118 | Storage of phosphonium phenolate catalysts and their use as interesterification catalysts | Melanie Moethrath, Silke Kratschmer, Johann Rechner | 2004-06-08 |
| 6740730 | Polycarbonate and molded polycarbonate articles | Silke Kratschmer, Lothar Bunzel | 2004-05-25 |
| 6710152 | Solid particles | Rolf Lanze, Michael Prein | 2004-03-23 |
| 6710153 | Method for producing phosphonium phenolates | Lothar Bunzel, Annett Konig, Silke Kratschmer | 2004-03-23 |
| 6706848 | Method for producing polycarbonate | Michael Prein, Rolf Lanze | 2004-03-16 |
| 6703473 | Process for producing polycarbonate | Kaspar Hallenberger, Silke Kratschmer, Michael Prein, Steffen Kuhling | 2004-03-09 |
| 6699959 | Polycarbonate having a low shear thinning behavior | James P. Mason, Silke Kratschmer | 2004-03-02 |
| 6630563 | Process for continuous production of polycarbonates and a reactor therefor | Thomas König, Silke Kratschmer, Eike Schulz Van Endert, Klaus Schroder, Hans-Peter Hoffmann | 2003-10-07 |
| 6596840 | Method for producing modified polycarbonates | Silke Kratschmer, Lothar Bunzel | 2003-07-22 |
| 6476273 | Method for producing phosphonium phenolates | Annett Konig, Lothar Bunzel | 2002-11-05 |
| 6307006 | Method for producing branched polycarbonates | Annett Konig, Lothar Bunzel | 2001-10-23 |
| 6262219 | Method for producing polycarbonate | Annett Konig, Claus-Ludolf Schultz, Gunther Jeromin | 2001-07-17 |
| 5767224 | Two-step process for the production of thermoplastic polycarbonate | Steffen Kuhling, Klaus Schebesta, Martin Ullrich, Heinrich Schuchardt, Rolf Bachmann +4 more | 1998-06-16 |
| 5756641 | Process for producing thermoplastic polycarbonate | Steffen Kuhling, Gottfried Zaby, Thomas Fischer | 1998-05-26 |
| 5652313 | Two-stage process for the manufacture of thermoplastic polycarbonate | Steffen Kuhling, Gottfried Zaby, Claus Wulff | 1997-07-29 |
| 5652324 | Process for the production of thermoplastic polycarbonate | Steffen Kuhling, Thomas Fischer, Gottfried Zaby, Franz Ferdinand Rhiel | 1997-07-29 |
| 5648437 | Process for the manufacture of thermoplastic polycarbonate | Thomas Fischer, Rolf Bachmann, Franz Ferdinand Rhiel, Steffen Kuhling | 1997-07-15 |
| 5508375 | Process for the preparation of polycarbonates | Jurgen Kadelka, Wolfgang Herrig | 1996-04-16 |
| 5412060 | Process for the production of polycarbonate of constant viscosity | Claus Wulff, Rolf Bachmann, Gunther Weymans, Jurgen Kadelka, Wolfgang Herrig | 1995-05-02 |