Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9771451 | Method for producing polycarbonate according to the phase interface method | Stephan Laue, Jan Heijl, Rolf Bachmann, Franky Bruynseels, Maarten De Bock +2 more | 2017-09-26 |
| 7705107 | Process for the preparation of polycarbonates | Wolfgang Ebert, Wilfried Haese, Helmut Einberger, Alexander Meyer, Andreas Frankenau +4 more | 2010-04-27 |
| 7071284 | Process for the preparation of polycarbonates | Christian Kords, Jürgen Heuser | 2006-07-04 |
| 6930202 | Phosgene having low content of carbon tetrachloride | Jürgen Heuser, Christian Kords | 2005-08-16 |
| 6682794 | Polycarbonate containers | Klaus Horn, Steffen Kuhling, Ralf Hufen, Rolf Lanze, Michael Prein +3 more | 2004-01-27 |
| 6613868 | Process for producing polycarbonates | Christian Kords, Jürgen Heuser | 2003-09-02 |
| 6395864 | Polycarbonates with a low yellowness index | Steffen Kuhling, Rolf Lanze, Michael Prein, Rainer Neumann, Christian Kords +3 more | 2002-05-28 |
| 5444148 | Improved transesterification process for the production of polycarbonates | Wolfgang Alewelt, Steffen Kuhling | 1995-08-22 |
| 5418316 | Guanidine-derived catalyts for preparing polycarbonates by transesterification | Steffen Kuhling, Wolfgang Alewelt | 1995-05-23 |
| 5416161 | Production of blend systems by the condensation of oligocarbonates in the presence of mass-polymerized ABS | Werner Nielinger, Dieter Wittmann, Dieter Freitag, Karsten-Josef Idel | 1995-05-16 |
| 5399659 | Two-stage process for the production of thermoplastic polycarbonate | Steffen Kuhling, Wolfgang Alewelt | 1995-03-21 |
| 5384389 | Process for the production of polycarbonates | Wolfgang Alewelt, Steffen Kuhling | 1995-01-24 |
| 5373082 | Process for the production of thermoplastic polycarbonates | Steffen Kuhling, Wolfgang Alewelt, Dieter Freitag | 1994-12-13 |
| 5340905 | Process for the preparation of thermoplastic polycarbonates | Steffen Kuhling, Wolfgang Alewelt, Dieter Freitag | 1994-08-23 |
| 5317083 | Process for isolating polycarbonates from their solutions with tube having cross sectional contrictions | Dieter Freitag, Claus Wulff, Wolfgang Alewelt | 1994-05-31 |
| 5314985 | Molten, catalytic process for the preparation of polycarbonates | Steffen Kuhling, Wolfgang Alewelt, Dieter Freitag | 1994-05-24 |
| 5235026 | Continuous production of polycarbonates | Claus Wulff, Gunther Weymans, Zoltan Kricsfalussy, Wolfgang Alewelt, Jürgen Heuser | 1993-08-10 |
| 4788259 | Flame-proof polyamides | Werner Nielinger, Heinz-Josef Fullman | 1988-11-29 |
| 4782123 | Process for the preparation of copolyphosphonates of high notched impact strength | Klaus Reinking, Dieter Freitag | 1988-11-01 |
| 4719279 | Process for the preparation of copolyphosphonates having high toughness | Klaus Reinking, Dieter Freitag | 1988-01-12 |
| 4701554 | Process for the preparation of polyphosphonic acid amides | Manfred Schmidt, Dieter Freitag, Udo Rudolph, Frank Kleiner | 1987-10-20 |
| 4668720 | Flame resistant moulding compounds based on styrene polymers | Hubert Bosshammer, Manfred Schmidt, Dieter Freitag | 1987-05-26 |
| 4614789 | Thermotropic aromatic polyesters with high rigidity, a process for the production thereof and the use thereof for the production of mouldings, filaments, fibres and films | Hans-Rudolf Dicke | 1986-09-30 |