| 6554965 |
Rectification column for isolating pure substances from high boiling air-and/or temperature sensitive substances |
Horst Hartmann, Wolfram Burst, Wulf Kaiser, Harald Laas, Bernhard Bockstiegel +1 more |
2003-04-29 |
| 6111117 |
Process for isolation of pure substances from mixtures of high-boiling air and/or temperature-sensitive substances which require a high separation efficiency by rectification under medium vacuum, and columns suitable for this process |
Horst Hartmann, Wolfram Burst, Wulf Kaiser, Harald Laas, Bernhard Bockstiegel +1 more |
2000-08-29 |
| 5950454 |
Cloth or cloth-like packing which is subject to low pressure losses and has an ordered structure for use in material-exchange columns and rectification method using such packing |
Wolfram Burst, Horst Hartmann, Wulf Kaiser, Harald Laas, Bernhard Bockstiegel +1 more |
1999-09-14 |
| 5523420 |
Preparation of alpha-tocopherol and alpha-tocopheryl acetate in liquid or supercritical carbon dioxide |
Rainer Lowack, Joachim Meyer, Manfred Eggersdorfer |
1996-06-04 |
| 5468883 |
Preparation of vitamin E |
Hans Kiefer, Hagen Jaedicke |
1995-11-21 |
| 5290567 |
Pulverulent products composed of a water-insoluble core substance and of a protective covering |
Joachim Schneider, Gerhard Schwarz, Wolfgang Bewert, Horst Schumacher |
1994-03-01 |
| 5063194 |
Palladium catalyst |
Franz J. Broecker, Lothar Arnold |
1991-11-05 |
| 5041572 |
Preparation of 2,3,5-trimethyl-p-benzoquinone |
Ulrich Hoercher, Barbara Jessel, Bernhard Bockstiegel, Harald Laas |
1991-08-20 |
| 4519961 |
Production of dry powders of substances which are sensitive to oxidation |
Horst Schumacher |
1985-05-28 |
| 4206153 |
Treatment of methanolic-aqueous residues from syntheses employing triphenylphosphonium salts |
Hans-Ulrich Scholz, Bernhard Schulz |
1980-06-03 |
| 4191692 |
Manufacture of tocopherol |
Henning Kroesche, Bernhard Schulz, Joachim Paust, Sigberg Pfohl |
1980-03-04 |
| 4182731 |
Preparation of aqueous solutions or fine aqueous dispersions of polyenyltriarylphosphonium salts |
Bernhard Schulz, Hans-Ulrich Scholz, Hans Grassner, Werner Reif |
1980-01-08 |
