Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857582 | Process for preparing colloidal suspensions of organopolysiloxanes | Matthias Wolfgruber, Volker Frey | 1989-08-15 |
| 4857608 | Process for preparing weather-resistant coatings | Christian Herzig, Volker Frey | 1989-08-15 |
| 4833187 | Silicone-containing paint compositions | Wilhelm Sittenthaler, Klaus Marquardt, Anton Eglseder | 1989-05-23 |