Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874847 | Process for the diazotisation of primary aromatic amines which are sparingly soluble in water | Rudiger Oxenius, Ernst Burgi, Vladimir Arnold | 1989-10-17 |
| 4845638 | Method of eliminating excess nitrite in diazotisation solutions | Bruno Fortsch | 1989-07-04 |