Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4693877 | Cleavage of formamide to give hydrocyanic acid and water | Ubbo Oehsen, Karlheinz Stecher, Berthold Mueller, Fritz Brunnmueller, Rolf Schneider | 1987-09-15 |
| 4596678 | Multiple-step process for the preparation of hexamethylene diisocyanate-1,6 and/or isomeric aliphatic diisocyanates with six carbon atoms in the alkylene residue | Franz Merger, Friedrich Towae, Hans Hellbach, Gunther Isbarn | 1986-06-24 |
| 4289589 | Separating toluene diisocyanate and/or higher boiling solvents from distillation residues of the toluene diisocyanate manufacture using a fluidized bed | Bernd Blumenberg, Ludwig Vogel, Eckhard Hetzel | 1981-09-15 |