Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5891410 | Process for the purification of an oxidation off gas | Hermann-Josef Korte, Anton Schoengen, Johann H. Schroeder, Jorg Porschen | 1999-04-06 |
| 5614159 | Process for the purification of an oxidation off gas with energy recovery | Hermann-Josef Korte, Anton Schoengen, Johann H. Schroeder, J org Porschen | 1997-03-25 |
| 4642369 | Process for the production of dimethyl terephthalate from p-xylene and methanol | Jorg Porschen, Anton Schoengen, Ralf Wirges | 1987-02-10 |
| 4642377 | Process for producing terephthalic acid from p-xylene and methanol by way of dimethyl terephthalate | Jorg Porschen, Anton Schoengen, Ralf Wirges | 1987-02-10 |
| 4410449 | Recovery and reuse of heavy-metal oxidation catalyst from the Witten DMT process | Karl-Heinz Diessel, Friedrich Struss | 1983-10-18 |