Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4929249 | Discharge and discharge resist printing using aminoreductones | Peter Lechtken | 1990-05-29 |
| 4398914 | Process for discharge or reserve printing on synthetic fibers: formaldehyde sulfoxylate and hexamethylene tetramine | Adolf Blum, Guenther Vogl | 1983-08-16 |