Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4359426 | Process for the production of aromatic isocyanates containing aromatically bound sulfochloride groups | Dieter Dieterich, Heinz U. Blank, Erich Wolters | 1982-11-16 |
| 4349471 | Process for the preparation of aromatic sulphonic acid halides | Heinz U. Blank, Erich Wolters | 1982-09-14 |