Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4945120 | Process for the production of polyurethane foams using sterically hindered aromatic diamines | Richard Kopp, Eckehard Weigand, Rolf Wiedermann | 1990-07-31 |
| 4256849 | Process for the production of cold setting foams which contain urethane groups prepared from a mixture of 4,4-diphenyl methane diisocyanate and 2,4-diphenyl methane diisocyanate | Jurgen Ick, Hans-Joachim Meiners, Gunter Hauptmann, Klaus Konig | 1981-03-17 |