Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4767535 | Membranes of diisocyanate addition polymers for hemodialysis and/or hemofiltration | Peter Hentschel, Christof Josefiak | 1988-08-30 |
| 4522880 | Thick polyimide-metal laminates with high peel strength | Jeffery D. Lasher, Gerhard Meyer, Hans Zengel | 1985-06-11 |
| 4314089 | Process for the preparation of nitrosobenzene | Hans Zengel, Manfred Bergfeld | 1982-02-02 |