Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9828464 | Ultra-high purity polycarbonates having good inherent color and thermal resistance and a device and a method for producing the same | Jörg Kirchhoff, Michael Bierdel, Klemens Kohlgrüber, Johann Rechner, Ing. Johan Vaes +3 more | 2017-11-28 |
| 9808978 | Screw elements with reduced energy input during the build-up of pressure | Michael Bierdel, Ulrich Liesenfelder | 2017-11-07 |
| 9738025 | Method for extruding plastic masses | Michael Bierdel, Carsten Conzen, Ulrich Liesenfelder, Klemens Kohlgrüber, Reiner Rudolf +1 more | 2017-08-22 |
| 9688002 | Screw elements with improved dispersing action and low energy input | Michael Bierdel, Ulrich Liesenfelder | 2017-06-27 |
| 9485990 | Insecticide-containing netlike fabric | Rainer Sonneck, Thomas Böcker, Karin Horn, Guenther Nentwig, Maren Heinemann | 2016-11-08 |
| 9314954 | Method for constructing bodies that rotate in the same direction and are in contact with one another and computer system for carrying out said method | Michael Bierdel | 2016-04-19 |
| 9185907 | Insecticide-containing polymeric material | Maren Heinemann, Thomas Böcker, Karin Horn, Guenther Nentwig, Rainer Sonneck | 2015-11-17 |
| 9023983 | Extruder with integrated die plate and method for degasing polymer mixtures | Hanns-Ingolf Paul, Udo Wiesner, Jörg Kirchhoff, Klemens Kohlgrüber | 2015-05-05 |
| 9011889 | Insecticide-containing polymeric material | Maren Heinemann, Thomas Böcker, Karin Horn, Guenther Nentwig, Rainer Sonneck | 2015-04-21 |
| 8979355 | Screw elements with reduced sweep angle | Michael Bierdel, Ulrich Liesenfelder | 2015-03-17 |
| 8915642 | Method for constructing co-rotating contiguous bodies and computer program product for carrying out said method and screw elements produced accordingly | Michael Bierdel, Ulrich Liesenfelder | 2014-12-23 |
| 8906398 | Insecticide-containing netlike fabric | Rainer Sonneck, Thomas Böcker, Karin Horn, Guenther Nentwig, Maren Heinemann | 2014-12-09 |
| 8876360 | Method for constructing co-rotating, contiguous bodies and computer program product for carrying out said method | Michael Bierdel, Ulrich Liesenfelder | 2014-11-04 |
| 8753003 | Screw feed elements for extrusion of viscoelastic masses | Jörg Kirchhoff, Michael Bierdel, Ulrich Liesenfelder | 2014-06-17 |
| 8497345 | Device and method for degassing solvent-containing polycarbonate solutions | Klemens Kohlgrüber, Johan Vanden Eynde, Ing Johan Vaes, Stefaan De Vos | 2013-07-30 |
| 8394912 | Process and apparatus for the preparation of polycarbonate | Frank Doebert, Andreas Stremmel, Christoph Biedron, Stephan Laue, Johann Rechner +9 more | 2013-03-12 |
| 8383757 | Device and method for degassing solvent-containing polycarbonate solutions | Klemens Kohlgrüber, René de Cleyn, Johan Vaes, Johan Vanden Eynde, Dirk Van Meirvenne | 2013-02-26 |
| 7390114 | Vehicle headlight housing connection structure | Thomas Mett, Stefan Herrmann, Tobias Pfretzschner, Stefan Lux | 2008-06-24 |
| 7279544 | Transesterification process for the production of polycarbonates having a low content of volatile compounds | Uwe Hucks, Melanie Mothrath, Helmut-Werner Heuer, Lydia Simon, Marc Buts +1 more | 2007-10-09 |
| 7144981 | Process for separating volatile components from polymers | Klemens Kohlgrüber, Ulrich Liesenfelder, Michael Bierdel, Helmut Meyer, Richard Weider +1 more | 2006-12-05 |
| 7138478 | Process for mixing polymer melts with additives | Klemens Kohlgrüber, Günther Holdenried, Christian Kords, Jürgen Heuser | 2006-11-21 |
| 7129315 | Process for the production of polycarbonate | Jörg Kirchhoff, Klemens Kohlgrüber, Steffen Kuhling, Dirk Meirvenne | 2006-10-31 |
| 7091302 | Process for the preparation of polycarbonate | Jörg Kirchhoff, Klemens Kohlgrüber, Steffen Kuhling, Melanie Mothrath, Dirk Meirvenne | 2006-08-15 |
| 7060788 | Process for stripping monomers and other volatile constituents from polymer melts | Uwe Hucks, Melanie Mothrath | 2006-06-13 |
| 6994485 | Method and apparatus for mutually connecting elongated elements, such as reinforcement rods | — | 2006-02-07 |