Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4341719 | Process for the preparation of 1-amino-2-ethoxy-naphthalene-6-sulphonic acid | Rolf Putter, Manfred Niese, Peter Wenzl | 1982-07-27 |
| 4314950 | Process for the preparation of sulphonic acid chlorides | Wolfgang Schenk, Heinz U. Blank | 1982-02-09 |