Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7621994 | Preparations of pteridine pigments | Philippe Bugnon, Karin Karrer, Marcel Hahn | 2009-11-24 |
| 6211347 | Process for preparing fine pigment dispersions | Veronique Hall-Goulle | 2001-04-03 |
| 6071989 | Process for preparing fine pigment dispersions | Veronique Hall-Goulle | 2000-06-06 |
| 5776360 | Highly disperse magnetic metal oxide particles, processes for their preparation and their use | — | 1998-07-07 |
| 5489462 | Distance plate building component with a protective, ventilating, heat-insulating and drainage function | — | 1996-02-06 |
| 4431721 | Use of perylene pigments for photoelectrophoretic imaging | Max Jost | 1984-02-14 |
| 4427752 | Use of isoindoline pigments for photoelectrophoretic imaging | Jost von der Crone | 1984-01-24 |
| 4352448 | Apparatus for drying sheet-like photographic material | Thomas Hammer, Wilfried Hehn, Franz Kocourek, Viktor Osegowitsch | 1982-10-05 |
| 4303330 | Device for processing a photographic film | Wilfried Hehn, Siegfried Kurths, Franz Kocourek | 1981-12-01 |
| 4263932 | Accurate dosing of regenerating fluid to processing-fluid-tank in film developing machine | Erwin Laar, Josef Spickenreither | 1981-04-28 |
| 4215719 | Intermixing of fluid in plural tanks while maintaining the fluid levels in the tanks independent | Erwin Laar, Josef Spickenreither | 1980-08-05 |