Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6875243 | Catalysts for preparing polyisocyanates containing isocyanurate groups, and their use | Michael Ewald, Waltraud Poersch, Stephan Kohlstruk | 2005-04-05 |
| 6515096 | Stable 1:1 monoadducts of secondary aminoalkylalkoxy-silanes and diisocyanates and a process for preparing them | Stephan Kohlstruk | 2003-02-04 |