Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5166118 | Catalyst for the hydrogenation of hydrocarbon material | Klaus Kretschmar, Ludwig Merz, Klaus Niemann, Jose Guitian, Julio Krasuk +1 more | 1992-11-24 |
| 4851107 | Process for the hydrogenation of heavy and residual oils | Klaus Kretschmar, Ludwig Merz, Klaus Niemann, Jose Guitian, Julio Krasuk | 1989-07-25 |