Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882430 | Recovery of caprolactam from caprolactam distillation low boilers or high boilers or mixtures thereof | Gerald Neubauer, Emile De Decker, Hugo Fuchs, Josef Ritz | 1989-11-21 |
| 4795571 | Purification of frozen crystal layers | Hugo Fuchs, Eckhard Hetzel, Klaus Wintermantel, Peter Thoma | 1989-01-03 |