Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874797 | Oligourea polyols, polyether polyols produced from them and the use of these polyols in the isocyanate polyaddition process | Peter Haas, Hans-Ulrich Weber | 1989-10-17 |
| 4857560 | Reaction products useful as catalysts in the production of isocyanate-based plastics | Manfred Schmidt, Christoph Prolingheuer, Walter Klan | 1989-08-15 |