Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6329754 | Diagnostic system for a ballast of a high-pressure gas discharge lamp for a motor vehicle | Wolfgang Daub | 2001-12-11 |
| 4861898 | Isoindoline metal complexes | Heinrich Kowarsch, Erwin Hahn | 1989-08-29 |
| 4814441 | Finely divided transparent metal-free X-phthalocyanine | Peter Hauser | 1989-03-21 |
| 4491544 | Dyes having a diazo component and an isoquinoline coupling component | Heinrich Kowarsch, Erwin Hahn, Peter Hauser | 1985-01-01 |
| 4321390 | Preparation of insoluble metal complex colorants | — | 1982-03-23 |
| 4206113 | Azo dyes having an oxdiazolyl-1,2,4 group | Peter Dimroth, Walter Kurtz, Werner Juenemann | 1980-06-03 |