Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4357472 | Process for the production of thionaphthene from thionaphthene sulfonic acid | Georg Grigoleit, Kurt Matern, Gerd Collin | 1982-11-02 |
| 4339328 | Process for the production of high grade carbonaceous binders | Jurgen Stadelhofer, Heinz-Gerhard Franck, Heinrich Louis | 1982-07-13 |