Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4393234 | Process for the preparation of 3-hydroxybenzoic acid | Heinz U. Blank, Eike Gabel, Werner Mentzel | 1983-07-12 |
| 4382039 | Process for the preparation of 4-nitrotoluene-2-sulphonic acid | Peter Schnegg, Heinz U. Blank | 1983-05-03 |