| 5500118 |
Biogas reactor for the anaerobic treatment of waste water |
Helmut Hubert, Michael Zumbragel |
1996-03-19 |
| 5338575 |
Process for the quasi-continuous decaffeination of raw coffee |
Hedi Ben-Nasr |
1994-08-16 |
| 5190672 |
Method for thermal disposal of sewage sludge |
Helmut Hubert, Friedhelm Bultmann, Matthias Brunner |
1993-03-02 |
| 5182406 |
Process and apparatus for recovering vegetable fats and oils from oil-containing natural substances |
— |
1993-01-26 |
| 5154830 |
Process of removing phosphorus and suspended matter from waste water |
Ulrich Paul, Willi Schaper, Carl-Adolf Eschenbach, Karl Seel |
1992-10-13 |
| 4898990 |
Process for the extraction of vanillin |
Reinhard Konrad |
1990-02-06 |
| 4828702 |
Process for separating a solid substance from a liquid mixture of substances |
Rainer Hagen, Klaus Reimann |
1989-05-09 |
| 4812233 |
Apparatus for separating a solid substance from a liquid mixture of substances |
Rainer Hagen, Klaus Reimann |
1989-03-14 |
| 4797198 |
Process for the working up of salvage oil |
Rolf Wetzel, Winfried Kreuch |
1989-01-10 |
| 4652686 |
Process for producing hydrocarbons from biological sludge |
Heinz Effelsberg, Rainer Hagen |
1987-03-24 |
| 4642401 |
Process for the production of liquid hydrocarbons |
Rainer Hagen |
1987-02-10 |
| 4581166 |
Method for isolating and purifying antibiotics |
Siegfried Peter, Rainer Hagen |
1986-04-08 |
| 4560513 |
Process for the recovery of lecithin |
Rudolf Eggers, Rainer Hagen |
1985-12-24 |
| 4532992 |
Method for recovering petroleum |
Ernst Kriegel |
1985-08-06 |
| 4522707 |
Method for processing used oil |
Ernst Kriegel |
1985-06-11 |
| 4485003 |
Supercritical extraction and simultaneous catalytic hydrogenation of coal |
Rainer Hagen, Ernst Kriegel |
1984-11-27 |
| 4446921 |
Method for underground gasification of solid fuels |
Ernst Kriegel |
1984-05-08 |
| 4400398 |
Method for obtaining aromatics and dyestuffs from bell peppers |
Rainer Hagen, Manfred Knuth |
1983-08-23 |