Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4221903 | Semipermeable membranes of heterocyclic copolyamides | Klaus Elfert, Gerhard D. Wolf, Francis Bentz | 1980-09-09 |
| 4217227 | Semipermeable membranes of copolyamides | Klaus Elfert, Gerhard D. Wolf, Francis Bentz | 1980-08-12 |