Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4767535 | Membranes of diisocyanate addition polymers for hemodialysis and/or hemofiltration | Christof Josefiak, Werner Klostermeier | 1988-08-30 |
| 4442281 | Thermoplastic polyurethane-elastomers from cyclohexane-1,4-diisocyanate | Walter Brodowski, Hans Zengel | 1984-04-10 |
| 4256869 | Polyurethanes from trans-cyclohexane-1,4-diisocyanate | Helmut Schulze, Hans Zengel, Walter Brodowski, Franciscus J. Huntjens, Jan A. J. Schutijser | 1981-03-17 |
| 4223145 | Process for the preparation of organic mono- and polyisocyanates | Hans Zengel, Manfred Bergfeld | 1980-09-16 |