Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698151 | Process of making cellulose fibres | Stefan Zikeli, Franz Schwenninger, Raimund Jurkovic, Hartmut Ruf | 1997-12-16 |
| 5650112 | Process of making cellulose fibers | Stefan Zikeli, Ernst Rauch | 1997-07-22 |
| 5607639 | Process for the preparation of cellulose sheet | Stefan Zikeli, Ernst Rauch, Klaus-Christian Renner, Anton Sch onberg | 1997-03-04 |