Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4593117 | Process for the preparation of N- and O-substituted diurethanes and/or polyurethanes | Hartmut Knofel, Stefan Penninger, Peter Heitkamper | 1986-06-03 |
| 4388246 | Process for the preparation of polyisocyanates | Rudolf Sundermann, Klaus Konig, Theodor Engbert, Gernot Becker | 1983-06-14 |