| 5393225 |
Rotating tube heat treatment installation, in particular rotating tubular kiln, with indirect heat feed or dissipation |
Norbert Freiberger, Wolfgang Glaser, Stefan Zikeli |
1995-02-28 |
| 5330567 |
Process and arrangement for preparing a solution of cellulose |
Stefan Zikeli, Dieter Eichinger, Raimund Jurkovic, Heinrich Firgo |
1994-07-19 |
| 5189152 |
Cellulose solution in water and NMMO |
Peter Hinterholzer, Stefan Zikeli, Heinrich Firgo, Dieter Eichinger, Johann Manner +2 more |
1993-02-23 |
| 5178764 |
Process for cleaning or purifying aqueous N-methylmorpholine-N-oxide solutions |
Stefan Astegger, Heinrich Firgo, Johann Manner, Karin Weinzierl, 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, Karin Weinzierl, Stefan Zikeli |
1992-06-02 |
| 5094690 |
Process and arrangement for preparing a solution of cellulose |
Stefan Zikeli, Dieter Eichinger, Raimund Jurkovic, Heinrich Firgo |
1992-03-10 |