Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855052 | Foam-containing polyurethane (urea) compositions and process for the preparation thereof | — | 1989-08-08 |
| 4843105 | Process for the preparation of filler-containing, antionically modified polyurethane (urea) compositions, the polyurethane (urea) compositions so-obtained, and the use thereof | Kurt Mack | 1989-06-27 |
| 4834003 | Combustion of aqueous sewage sludge by the fluidized bed process | Friedhelm Sahlmen | 1989-05-30 |
| 4820415 | Polymer carrier masses as carriers in biochemical conversion processes in the aqueous phase | — | 1989-04-11 |
| 4801621 | Foam-containing polyurethane(urea) compositions and process for the preparation thereof | — | 1989-01-31 |