Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5045179 | Process for the hydrogenation reprocessing of used oils | Josef Langhoff, Harald Weber | 1991-09-03 |
| 5015457 | Process for the hydrogenation of organochlorine compounds, neutralization of the hydrochloric acid obtained and a neutralization agent for hydrochloric acid obtained from organochlorine compounds | Josef Langhoff, Klaus-Dieter Dohms | 1991-05-14 |
| 4639310 | Process for the production of reformer feed and heating oil or diesel oil from coal by liquid-phase hydrogenation and subsequent gas-phase hydrogenation | Werner Dohler, Ludwig Merz, Heinz Frohnert, Bernd Uckermann, Ulrich Graeser +3 more | 1987-01-27 |
| 4629550 | Catalytic reforming of gasoline feedstocks | Werner Dohler, Albert Fehrer | 1986-12-16 |