Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4289589 | Separating toluene diisocyanate and/or higher boiling solvents from distillation residues of the toluene diisocyanate manufacture using a fluidized bed | Waldemar Koehler, Bernd Blumenberg, Eckhard Hetzel | 1981-09-15 |
| 4189600 | Manufacture of glycol acetate | Hans-Martin Weitz, Juergen Hartig, Helmuth Grube | 1980-02-19 |