Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5314588 | Process for recovering polysocyanates from the distillation residues obtained in the production of tolylene diisocyanate | Uwe J. Zarnack, Volker Weintritt | 1994-05-24 |
| 5310769 | Process for the production of polyamine mixtures of the polyamino-polyaryl-polymethylene series | Manfred Gallus, Reinhold Wullner, Franz-Moritz Richter, Rudolf Uchdorf, William C. Forester | 1994-05-10 |