Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7169222 | Multilayer interference pigments | Hans-Dieter Bruckner, Andrea Heyland, Christoph Schmidt, Claudia Seibel | 2007-01-30 |
| 6689205 | Multilayer interference pigments | Hans-Dieter Bruckner, Andrea Heyland, Christoph Schmidt, Claudia Seibel | 2004-02-10 |
| 6602340 | Transparent medium with angular-selective transmitting or reflecting properties | Gerhard Pfaff, Alexandra BROWNFIELD, Joachim Weitzel, Wolfgang Hechler | 2003-08-05 |
| 6596070 | Interference pigments | Christoph Schmidt, Gerhard Pfaff, Sabine Schoen | 2003-07-22 |
| 6156115 | Multilayer interference pigment with transparent central layer | Gerhard Pfaff, Gerd Bauer, Martin Friz, Matthias Kuntz | 2000-12-05 |
| 6132504 | Multilayer interference pigment with absorbent central layer | Matthias Kuntz, Gerhard Pfaff, Gerd Bauer | 2000-10-17 |