Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5378668 | Process for reactivating ammoxidation catalysts | Brigitte Beuke, Jens Herwig, Nikolaus Paris | 1995-01-03 |
| 5141732 | Process for the removal of ammonium sulphate from tarrich waste streams from the production of (meth) acrylonitrile | Hans-Jurgen Haardt, Jens Herwig | 1992-08-25 |