Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10435507 | Ultra-high purity polycarbonates having good inherent color and thermal resistance and a device and a method for producing the same | Thomas Koenig, Joerg Kirchhoff, Michael Bierdel, Klemens Kohlgrueber, Johann Rechner +3 more | 2019-10-08 |
| 10370491 | Preparation of highly heat-resistant (co)polycarbonates by the transesterification method | Ivan Sluijs, Jan Heijl, Erik Sluyts | 2019-08-06 |
| 9828464 | Ultra-high purity polycarbonates having good inherent color and thermal resistance and a device and a method for producing the same | Thomas König, Jörg Kirchhoff, Michael Bierdel, Klemens Kohlgrüber, Johann Rechner +3 more | 2017-11-28 |
| 8394912 | Process and apparatus for the preparation of polycarbonate | Frank Doebert, Andreas Stremmel, Christoph Biedron, Stephan Laue, Johann Rechner +9 more | 2013-03-12 |
| 6716933 | Working up of polymer synthesis solutions | Wolfgang Alewelt, Wolfgang Ebert, Thomas Fritz, Dirk Jahn, Stefan Westernacher +1 more | 2004-04-06 |