Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7226567 | Multi-tube fixed-bed reactor, especially for catalytic gas phase reactions | Gerhard Olbert, Franz Corr, Ludwig Wambach, Ulrich Hammon | 2007-06-05 |
| 6774246 | Method for producing phthalic anhydride | Guido Voit, Thomas Heidemann | 2004-08-10 |
| 6570026 | Method for producing phthalic anhylic anhydride according to specifications | Werner Peschel, Bernd Bessling, Peter Michael Lorz, Bernhard Ulrich, Jean Werner Knab +2 more | 2003-05-27 |
| 6469183 | Method of producing phthalic acid anhydride | Guido Voit | 2002-10-22 |
| 6160161 | Per(poly)fluorinated polyoxyethylated carbamates | Hedi Trabelsi, Wolfgang Roehlke, Massimo Napoli, Philippe Lucas, Kenneth Charles Lowe +5 more | 2000-12-12 |
| 5371290 | Preparation of N,N-dialkarylamines | Willi Weber, Hans Diem | 1994-12-06 |
| 5191044 | Preparation of polyisobutene | Hans Peter Rath, Herwig Hoffmann, Helmut Mach | 1993-03-02 |
| 5173512 | Method for preparing perfluorinated heterocyclic compounds, and compounds prepared by this method | Hasso Meinert, Rudolf Fackler, Juergen Mader | 1992-12-22 |
| 5120731 | Stabilization of perfluorocarbon emulsions, and perfluorinated heterocyclic compounds usable as emulsion-stabilizing additives | Hasso Meinert, Juergen Mader, Rudolf Fackler, Wolfgang Roehlke, Monika Gennies +1 more | 1992-06-09 |
| 5091064 | Method for preparing perfluorinated heterocyclic compounds, and compounds prepared by this method | Hasso Meinert, Rudolf Fackler, Juergen Mader | 1992-02-25 |
| 5065632 | Flow line weighing device | — | 1991-11-19 |
| 4974679 | Load cell | — | 1990-12-04 |
| 4411818 | Reactivation of vanadium-containing oxidation catalysts | Kurt Blechschmitt, Friedrich Wirth | 1983-10-25 |
| 4324694 | Supported catalysts containing vanadium pentoxide, titanium dioxide, phosphorus, rubidium and/or cesium, with or without zirconium dioxide | Kurt Blechschmitt, Friedrich Wirth | 1982-04-13 |
| 4282116 | Supported catalyst containing vanadium and titanium and/or zirconium for the preparation of phthalic anhydride | Kurt Blechschmitt, Friedrich Wirth | 1981-08-04 |