Issued Patents All Time
| 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 |
| 4369327 | Preparation of phthalic anhydride | Dieter Stockburger, Wilhelm Schultz, Johannes E. Schmidt, Friedrich Wirth, Herwig Hoffmann +1 more | 1983-01-18 |