Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4457906 | Preparation of hydroxylammonium salts | Otto-Alfred Grosskinsky, Elmar Frommer, Erwin Thomas | 1984-07-03 |
| 4438084 | Manufacture of hydroxylammonium salts | Erwin Thomas, Rolf Muenster | 1984-03-20 |
| 4387082 | Removal of nitrous oxide from exit gases containing this compound during the production of hydroxylammonium salts | Alfred-Otto Grosskinsky, Elmar Frommer, Erwin Thomas, Ruediger Schmitz | 1983-06-07 |
| 4340575 | Manufacture of hydroxylammonium salts | Kurt Jockers, Erwin Thomas | 1982-07-20 |
| 4192856 | Manufacture of hydroxylammonium salts | Erwin Thomas, Dieter Wolf | 1980-03-11 |