Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5223626 | Preparation of cationic alkylenediamine dye intermediates | Wilfried Herter | 1993-06-29 |
| 4695406 | Anthraquinone compounds and the production and use thereof | Roger Lacroix, Jean-Marie Adam | 1987-09-22 |
| 4309180 | Anthraquinone compounds and the production and use thereof | Roger Lacroix, Jean-Marie Adam | 1982-01-05 |