Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698151 | Process of making cellulose fibres | Stefan Zikeli, Friedrich Ecker, Franz Schwenninger, Raimund Jurkovic | 1997-12-16 |
| 5601771 | Process for the production of cellulose fibres | — | 1997-02-11 |