Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889562 | Organic pigments coated with crosslinked ethyl cellulose | Bernhard Medinger | 1989-12-26 |
| 4880472 | Organic pigments coated with metal oxides | Arnold Grubenmann, Bernhard Medinger, Jean Schaefle | 1989-11-14 |
| 4865650 | Novel compositions based on tetrachloroisoindolinone pigments | Jost von der Crone, Bernhard Medinger | 1989-09-12 |
| 4863522 | Novel compositions based on C.I. Pigment Red 177 | Max Jost, Edward E. Jaffe | 1989-09-05 |
| 4808230 | Organic pigments coated with metal oxides fixed with ethyl cellulose | Bernhard Medinger | 1989-02-28 |