Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7390867 | Isocyanate adducts | Marion Heinz, Peter Huntemann, Udo Schilling | 2008-06-24 |
| 7122708 | High-functionality polyether polyols and preparation thereof | Peter Bohme, Michael Pcolinski, Wolf-Dieter Habicher, Antje Ziemer | 2006-10-17 |
| 6495652 | Prepolymers containing isocyanate groups and a method for the production thereof | Michael Reichelt, Renate Hempel, Peter Falke, Peter von Malotki, Holger Seifert | 2002-12-17 |
| 6284812 | Thermally stable rigid foams based on isocyanate and having low brittleness and low thermal conductivity | Renate Hempel, Holger Seifert, Werner Schmiade | 2001-09-04 |
| 6274642 | Storage-stable, blowing agent-containing emulsions for producing rigid foams based on isocyanate | Anja Biedermann, Renate Hempel, Werner Wiegmann, Marion Heinz | 2001-08-14 |
| 6274759 | Diisocyanates containing hydantoin groups and polyurethanes in which they are present | Hermann Graf, Gunter Mohrhardt | 2001-08-14 |
| 6063824 | Microcellular urea-containing polyurethane elastomer | Ruediger Krech, Heinz Bollmann, Renate Hempel, Wolfgang Scholz, Manfred Genz | 2000-05-16 |
| 6046247 | Production of rigid polyurethane foams having a low thermal conductivity | Guiscard Glück, Klaus Hahn, Otto Volkert | 2000-04-04 |
| 6040349 | Production of rigid polyurethanes foams with reduced density | Gottfried Knorr, Eva Baum, Holger Seifert, Werner Wiegmann | 2000-03-21 |
| 6037383 | Microcellular polyurethane elastomer containing urea groups | Ruediger Krech, Heinz Bollmann, Renate Hempel, Wolfgang Scholz, Manfred Genz | 2000-03-14 |
| 5965231 | Gas mixtures for thermal insulation | Anne-Kathrin Merten, Norbert Krollmann | 1999-10-12 |
| 5916480 | Storage-stable emulsions for producing fine-celled rigid foams based on isocyanate | Marion Heinz, Anja Biedermann, Renate Hempel, Werner Wiegmann | 1999-06-29 |
| 5895792 | Production of rigid polyurethane foams | Renate Hempel, Holger Seifert, Werner Wiegmann | 1999-04-20 |
| 5880168 | Open-celled rigid foams based on isocyanate | Marion Heinz, Werner Wiegmann, Anja Biedermann, Michael Reichelt | 1999-03-09 |
| 5684092 | Production of rigid foams based on isocyanate | Holger Seifert, Renate Hempel, Gottfried Knorr | 1997-11-04 |
| 5624969 | Production of rigid foams based on isocyanate | Holger Seifert, Renate Hempel, Gottfried Knorr | 1997-04-29 |
| 5621024 | Preparation of thermoplastic polyurethanes | Peter Eberhardt, Ruediger Krech, Klaus Techritz | 1997-04-15 |