Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4287334 | Process for manufacturing viscose | Werner Koch | 1981-09-01 |
| 4198968 | Porous shaped article of regenerated cellulose adapted for medical use | Heinz Kalberer | 1980-04-22 |