Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7442835 | Process and apparatus for the production of phosgene | Berthold Keggenhoff, Jurgen Munnig | 2008-10-28 |
| 6803483 | Process for the purification of mixtures of toluenediisocyanate | Ove Nommensen, Hermann Dallmeyer, Wilhelm Hagen | 2004-10-12 |