Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844980 | Silica or silicic acid particles whose surface located hydroxyl groups are at least partially replaced by organic groups | Burghard Gruning, Ulrich Holtschmidt, Gerd Rossmy | 1989-07-04 |
| 4824983 | New fluorine-containing siloxanes, their synthesis and use as defoaming agent | Hans-Ferdi Fink, Roland Berger, Christian Weitemeyer | 1989-04-25 |
| 4816541 | Method for the preparation of SiH-containing organopolysiloxanes | Christian Weitemeyer, Dietmar Wewers | 1989-03-28 |