Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |