Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795807 | Preparation of azo dyestuffs by diazotization and coupling in the presence of an ester | Ulrich Buhler, Friedrich Schophoff | 1989-01-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795807 | Preparation of azo dyestuffs by diazotization and coupling in the presence of an ester | Ulrich Buhler, Friedrich Schophoff | 1989-01-03 |