Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5534304 | Process for treating a substrate with a superabsorbent material | Stephanus Willemsen | 1996-07-09 |
| 5264251 | Superabsorbent-coated aramid yarn and a process for manufacturing such a yarn | Stephanus Willemsen | 1993-11-23 |