Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5124370 | Polyisocyanate mixtures containing isocyanurate groups, a process for their production and their use for the production of polyurethane foams | Hans-Joachim Scholl, Rainer Welte | 1992-06-23 |
| 4414074 | Process for the purification of 4,4'-diisocyanatodiphenylmethane by plural distillations | Gunther Ellendt, Max Scheidel | 1983-11-08 |