Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4550204 | Method and apparatus for the manufacture of N,N'-bis-(aroyl)hydrazines | Wolfgang von Gentzkow, Manfred Schmiedel | 1985-10-29 |
| 4336027 | Dyeing and marking agent | — | 1982-06-22 |