Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4343936 | Process for the preparation of cationic dyestuffs | Harald Gleinig, Bernd Berger-Lohr | 1982-08-10 |
| 4342867 | Process for the preparation of cationic dyestuffs | Harald Gleinig, Bernd Berger-Lohr | 1982-08-03 |