Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812568 | Process for the preparation of 6,13-dihydroquinacridones and quinacridones | Helmut Herzog, Detlef-Ingo Schutze, Reinold Schmitz | 1989-03-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812568 | Process for the preparation of 6,13-dihydroquinacridones and quinacridones | Helmut Herzog, Detlef-Ingo Schutze, Reinold Schmitz | 1989-03-14 |