Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639896 | Process for the preparation of N,N'-disubstituted 1,4-diaminoanthraquinones | Dietmar Kalz, Reinold Schmitz, Karl-Heinz Reinhardt, Stephan Michaelis | 1997-06-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639896 | Process for the preparation of N,N'-disubstituted 1,4-diaminoanthraquinones | Dietmar Kalz, Reinold Schmitz, Karl-Heinz Reinhardt, Stephan Michaelis | 1997-06-17 |