Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4608795 | Facings of inorganic molding compositions for building components | Paul Spielau, Hans-Werner Engels, Guenter Zoche | 1986-09-02 |
| 4533393 | Aqueous curable molding compositions based on inorganic ingredients and process for the production of molded parts | Paul Spielau, Gunter Zoche, Hans-Werner Engels | 1985-08-06 |