Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6803483 | Process for the purification of mixtures of toluenediisocyanate | Heinrich Lokum, Ove Nommensen, Wilhelm Hagen | 2004-10-12 |
| 5407974 | Solution polymer recovery process | — | 1995-04-18 |
| 5387396 | Reactor for carrying out exothermic reactions | Harald Stein | 1995-02-07 |
| 4915509 | Mixer for mixing at least two free-flowing substances, especially those which react during mixing | Heinz Sauer, Uwe J. Zarnack, Berthold Keggenhoff, Bernd Weber | 1990-04-10 |
| 4851571 | Process for the production of isocyanates | Heinz Sauer, Uwe J. Zarnack, Berthold Keggenhoff, Bernd Weber | 1989-07-25 |
| 4720326 | Process for working-up aqueous amine solutions | Heiko Beckhaus, Harro Witt, Dieter Becher, Uwe J. Zarnack | 1988-01-19 |