Issued Patents All Time
Showing 51–59 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828702 | Process for separating a solid substance from a liquid mixture of substances | Hubert Coenen, Klaus Reimann | 1989-05-09 |
| 4812233 | Apparatus for separating a solid substance from a liquid mixture of substances | Hubert Coenen, Klaus Reimann | 1989-03-14 |
| 4652686 | Process for producing hydrocarbons from biological sludge | Hubert Coenen, Heinz Effelsberg | 1987-03-24 |
| 4642401 | Process for the production of liquid hydrocarbons | Hubert Coenen | 1987-02-10 |
| 4581166 | Method for isolating and purifying antibiotics | Siegfried Peter, Hubert Coenen | 1986-04-08 |
| 4560513 | Process for the recovery of lecithin | Hubert Coenen, Rudolf Eggers | 1985-12-24 |
| 4492808 | Method for separating ethanol from an ethanol containing solution | Jurgen Hartwig | 1985-01-08 |
| 4485003 | Supercritical extraction and simultaneous catalytic hydrogenation of coal | Hubert Coenen, Ernst Kriegel | 1984-11-27 |
| 4400398 | Method for obtaining aromatics and dyestuffs from bell peppers | Hubert Coenen, Manfred Knuth | 1983-08-23 |