Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7169222 | Multilayer interference pigments | Andrea Heyland, Christoph Schmidt, Christina Schank, Claudia Seibel | 2007-01-30 |
| 6840993 | Silver-colored luster pigment | Christoph Schmidt, Andrea Heyland, Claudia Fornoff | 2005-01-11 |
| 6767633 | Transparent medium having angle-selective transmission or reflection properties and/or absorption properties | Elke Steudel, Gerhard Pfaff, Peter Reynders, Christoph Schmidt, Carsten Brabänder +1 more | 2004-07-27 |
| 6689205 | Multilayer interference pigments | Andrea Heyland, Christoph Schmidt, Christina Schank, Claudia Seibel | 2004-02-10 |
| 6508876 | Colored interference pigment | Klaus Bernhardt, Karl Osterried, Reiner Vogt | 2003-01-21 |
| 6238471 | Interference pigments having a blue mass tone | Reiner Vogt | 2001-05-29 |
| 5698205 | Photostabilization of titanium dioxide sols | Ulrike Hamann, Andrea Heyland | 1997-12-16 |
| 5611852 | Stabilized conductive pigment | Gerhard Pfaff | 1997-03-18 |
| 5562763 | Process for the preparation of composite pigments | Ines Subrod | 1996-10-08 |
| 5472640 | Conductive lamellar pigments | Reiner Esselborn | 1995-12-05 |
| 5389361 | Precursor preparation for the production of neutral metal oxide sols | Karl Osterried, Wolfgang Hechler, Roland Martin | 1995-02-14 |
| 5344488 | Pigments | Peter Reynders | 1994-09-06 |
| 5271771 | Carbon-containing metal oxide pigments | Klaus-Dieter Franz, Klausg Ambrosius | 1993-12-21 |
| 4780140 | Platelet-shaped iron oxide pigments | Klaus-Dieter Franz, Reiner Esselborn, Ralf Emmert | 1988-10-25 |