Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5166118 | Catalyst for the hydrogenation of hydrocarbon material | Ludwig Merz, Klaus Niemann, Jose Guitian, Julio Krasuk, Franzo Marruffo +1 more | 1992-11-24 |
| 5064523 | Process for the hydrogenative conversion of heavy oils and residual oils, used oils and waste oils, mixed with sewage sludge | Ludwig Merz, Klaus Niemann | 1991-11-12 |
| 4851107 | Process for the hydrogenation of heavy and residual oils | Ludwig Merz, Klaus Niemann, Jose Guitian, Julio Krasuk, Franzo Marruffo | 1989-07-25 |