Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5216144 | Method of producing shaped cellulosic articles | Dieter Eichinger, Raimund Jurkovic, Stephan Astegger, Heinrich Firgo, Peter Hinterholzer +1 more | 1993-06-01 |
| 5189152 | Cellulose solution in water and NMMO | Peter Hinterholzer, Stefan Zikeli, Heinrich Firgo, Bernd Wolschner, Dieter Eichinger +2 more | 1993-02-23 |
| 5178764 | Process for cleaning or purifying aqueous N-methylmorpholine-N-oxide solutions | Stefan Astegger, Heinrich Firgo, Bernd Wolschner, Johann Manner, Stefan Zikeli +1 more | 1993-01-12 |
| 5118423 | Method of removing water from a dilute solution of N-methylmorpholine-N-oxide, N-methylmorpholine, or morpholine | Stephan Astegger, Dieter Eichinger, Heinrich Firgo, Bernd Wolschner, Stefan Zikeli | 1992-06-02 |
| 5053138 | Process for purifying an aqueous solution of N-methyl-morpholine N-oxide | Dietmar Korger, Dieter Eichinger, Stephan Astegger, Johann Manner | 1991-10-01 |