Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6806371 | Preparation of substituted pyridine N-oxide compounds | Thomas Zich, Wolfgang Schiek, Christian Seifter | 2004-10-19 |
| 5481035 | Process for the preparation of asymmetrically substituted ureas, carbamates, thiocarbamates and substituted isocyanates | Martin Mullner, Gerhard Stern | 1996-01-02 |
| 5414083 | Method for the production of N-cyclic and N,N'-dicyclic ureas and their use as chemical solvents | Kurt A. Hackl, Martin Mullner, Gerhard Stern | 1995-05-09 |
| 5248755 | Process for the preparation of asymmetrically substituted ureas, carbamates or thiocarbamates | Martin Muller, Gerhard Stern, Erich Schulz | 1993-09-28 |
| 5091553 | Process for the preparation of substituted isocyanates | Martin Mullner, Gerhard Stern, Erich Schulz | 1992-02-25 |
| 5043444 | Process for the preparation of asymmetrically substituted ureas | Martin Mullner, Gerhard Stern | 1991-08-27 |