Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5925783 | Process for the preparation of isocyanates | Klaus Jost, Rudolf Sundermann | 1999-07-20 |
| 5347034 | Process for the production of poly(O-alkylurethanes) of the diphenyl methane series | Thomas Schieb, Stefan Wershofen | 1994-09-13 |
| 5043471 | Process for the preparation of polyisocyanates | Hartmut Knofel, Wolfgang Friederichs | 1991-08-27 |
| 4692550 | Continuous process for thermal splitting of carbamic acid esters | Theodor Engbert, Hartmut Knofel, Klaus Konig | 1987-09-08 |
| 4675437 | Cycloaliphatic triisocyanates | Hartmut Knofel, Stefan Penninger, Michael Brockelt, Herbert Stutz | 1987-06-23 |
| 4603189 | Triisocyanates and a process for their preparation | Hartmut Knofel, Stefan Penninger, Michael Brockelt, Herbert Stutz | 1986-07-29 |