Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855162 | Polytetrafluoroethylene coating of polymer surfaces | Frieder Hofmann, Karol J. Mysels | 1989-08-08 |
| 4853128 | Non-distorting separator for autoclavable membrane stacks | Frieder Hofmann, Dirk M. deWinter | 1989-08-01 |
| 4814082 | Ultrafiltration thin film membranes | — | 1989-03-21 |