Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868320 | 1,7,9,15-Tetraoxa-4,12-diaza-8-silaspiro-(7.7)-pentadecanes, a process for their preparaton and their use | Helmut-Martin Meier, Armin Sickert | 1989-09-19 |
| 4812591 | Process for the preparation of bisphenol-bisacrylates | Hans-Josef Buysch | 1989-03-14 |