Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5268509 | Process for the preparation of an iron catalyst and a process for the preparation of primary amines by the hydrogenation of nitriles using said iron catalyst | Otto Immel, Hans-Helmut Schwarz, Stephan Herman Wendel, Peter Fischer | 1993-12-07 |
| 4994541 | Process for the preparation of polyisocyanates containing uretdione and isocyanurate groups, the polyisocyanates obtained by this process and their use in two-component polyurethane coatings | Winfried Dell, Werner Kubitza | 1991-02-19 |
| 4764308 | Process for the production of phosgene with simultaneous generation of steam | Heinz Sauer, Helmut Porkert | 1988-08-16 |
| 4419295 | Continuous process for the production of organic isocyanates | Hans-Joachim Hennig, Jurgen Lahrs | 1983-12-06 |