Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5310769 | Process for the production of polyamine mixtures of the polyamino-polyaryl-polymethylene series | Christian König, Manfred Gallus, Reinhold Wullner, Rudolf Uchdorf, William C. Forester | 1994-05-10 |
| 4774357 | Process for purifying polyisocyanates and the polyisocyanates thus purified | Berthold Keggenhoff, Gunther Ellendt, Marcel Petinaux | 1988-09-27 |
| 4739094 | Alkoxylated aminopolyethers, a process for their preparation | Jan Mazanek, Hanns P. Muller, Roland Nast, Wolfgang Oberkirch, Walter Schafer | 1988-04-19 |