Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7102034 | Process for preparing sulfonated arylphosphines | Michael Riedel, Ernst Wiebus, Carl D. Frohning, Wilfried Fenske, Florian Rampf +8 more | 2006-09-05 |
| 6864387 | Process for preparing sulfonated arylphosphines | Michael Riedel, Ernst Wiebus, Carl D. Frohning, Wilfried Fenske, Florian Rampf +8 more | 2005-03-08 |
| 6740773 | Process for preparing cyclohexanedicarboxylic esters | Hans Bohnen, Thomas Klein | 2004-05-25 |
| 6610881 | Method for producing sulfonated aryl phosphines | Michael Riedel, Jurgen Herwig, Helmut Bahrmann, Wolfgang Zgorzel-Ski, Robert Eckl +4 more | 2003-08-26 |
| 6137013 | Method of stabilizing aldehydes | Michael Riedel, Wolfgang Zgorzelski, Michael Messerschmidt | 2000-10-24 |
| 5451698 | Process for the preparation of sulfonated arylphosphines | Helmut Bahrmann, Peter Lappe, Wolfgang Anton Herrmann, Rainer Manetsberger, Guido Albanese | 1995-09-19 |