Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6875947 | Method of manufacturing a welding stud | Kay Sichtermann | 2005-04-05 |
| 6784219 | Polyurethane cast elastomers based on durene diisocyanate | Peter Heitkamper, Eduard Mayer, Thomas Munzmay, Joachim Wagner, Christian Wolfrum | 2004-08-31 |
| 6596959 | Method of manufacturing a welding stud | Kay Sichtermann | 2003-07-22 |
| 6486346 | Process for the preparation of durene diisocyanate | Peter Heitkamper, Stefan Penninger | 2002-11-26 |
| 5925783 | Process for the preparation of isocyanates | Gunter Hammen, Rudolf Sundermann | 1999-07-20 |
| 5786438 | Mixtures of cycloaliphatic diisocyanates, a process for their preparation and their use for the production of polyisocyanate addition products | Hans-Joachim Scholl, Bernhard Jansen, Rolf-Volker Meyer | 1998-07-28 |
| 5552507 | Diisocyanates and processes for their production and use | Christian Wamprecht, Stefan Penninger | 1996-09-03 |