Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11623993 | Laminate pigment with spacing properties and high UV-greying stability | Volker Schmitt | 2023-04-11 |
| 8641870 | Method for surface treatment of a titanium dioxide pigment | Janine Siekman, Siegfried Blumel, Alexander Breyder, Volker Schmitt | 2014-02-04 |
| 7842131 | High opacity TiO2 pigment and production method | Siegfried Blumel, Lydia Drews-Nicolai, Volker Schmitt | 2010-11-30 |
| 7150421 | Jet mill | Siegfried Blumel, Hans-Ulrich Schwanitz, Siegfried Wensing | 2006-12-19 |
| 7147702 | Method for the surface treatment of a titanium dioxide pigment | Lydia Drews-Nicolai, Siegfried Bluemel, Volker Schmitt | 2006-12-12 |