Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855473 | Process for the preparation of organooxychlorosilanes | Thomas Wurminghausen, Franz Saykowski, Hans G. Frohlen | 1989-08-08 |
| 4839436 | Polyphenylene oxides with high molecular weight and a process for their preparation and their use | Walter Heitz | 1989-06-13 |