Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6547948 | Method of increasing the concentration of dilute brine in NaCl electrolysis plants using the membrane process | Alfred Soppe, Bernd Bressel | 2003-04-15 |
| 5389354 | Process for the production of oleum and sulfuric acid | Karl Brandle, Kurt-Wilhelm Eichenhofer, Gunter Putz, Klaus-Peter Grabowski | 1995-02-14 |
| 4917919 | Process for preventing caking of ammonium bifluoride and/or fluoride particles | Dorde Jovcic, Bernd Krumbach, Heinz Heumuller | 1990-04-17 |
| 4540765 | Polyurethanes containing perfluoroalkyl groups and a process for their production | Ulrich Koemm | 1985-09-10 |
| 4503213 | Process for the preparation of polycarbonates having N-alkyl-perfluoroalkyl sulfonamide terminal groups | Sivaram Krishnan, Dieter Neuray, Wolfgang Cohnen | 1985-03-05 |
| 4465655 | Process for the purification of exhaust gases containing sulfuryl fluoride | Hans-Hermann Heins, Helmut Coulon, Reiner Kriwalski | 1984-08-14 |
| 4411841 | Preparation of novel perfluorinated sulphonic acid fluorides | — | 1983-10-25 |
| 4265831 | Process for the preparation of hydroxyalkylperfluoroalkane sulphonamides | Karl-Heinz Mitschke, Hans Niederprum | 1981-05-05 |