Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4228056 | Shaped articles from insoluble hydrogels and method of manufacturing same | — | 1980-10-14 |
| 4183884 | Method for manufacturing hydrogel tubes | Otto Wichterle | 1980-01-15 |