Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7683110 | Preparation of cellulose ether products of increased viscosity and fineness | Hartwig Schlesiger, Roland Bayer, Daniel Auriel, Jurgen Engelhardt, Frank Hohl +3 more | 2010-03-23 |
| 7491755 | Cellulose ether composition for the extrusion of mineral shaped bodies and also a process for the extrusion of mineral shaped bodies using this cellulose ether composition | Roland Bayer, Frank Hohl, Hartwig Schlesiger, Arne Kull, Jurgen Engelhardt +1 more | 2009-02-17 |
| 7402668 | Process of preparing alkylhydroxyalkylcellulose | Wolfgang Dannhorn, Erik-Andreas Klohr, Martin Kowollik, Hartwig Schlesiger | 2008-07-22 |
| 7041168 | Process for cement extrusion that makes use of crosslinked cellulose additives | Hartwig Schlesiger, Roland Bayer, Frank Hohl, Arne Kull, Jurgen Engelhardt +1 more | 2006-05-09 |
| 7012139 | Process of preparing delayed-dissolution cellulose ethers | Hartwig Schlesiger, Wolfgang Dannhorn, Volkhardt Müller, Frank Hohl | 2006-03-14 |
| 6891034 | Process for preparing alkylhydroxyalkyl cellulose | Wolfgang Dannhorn, Hartwig Schlesiger, Gerolf Weissach | 2005-05-10 |
| 6593468 | Essentially fiber-free cellulose ether with improved water retention, method for the production and use thereof | Werner Lange, Bernd Schriewer, Friedrich-Karl Lampert, Wilhelm Oppermann, Rene Kiesewetter | 2003-07-15 |
| 5808052 | Use of cellulose mixed ethers as additives for earth pressure shields | Klaus Szablikowski, Werner Lange, Rene Kiesewetter | 1998-09-15 |