Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4442287 | Anthraquinone dyes | Reinhold Krallmann | 1984-04-10 |
| 4181668 | Anthraquinone dyes | Wolfgang Elser, Manfred Ruske | 1980-01-01 |
EH
Ernst Hartwig
Overall (All Time): #2,357,529 of 4,157,543Top 60%
2
Patents All Time