Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5891227 | Aqueous dye preparations | Dietrich Hoffmann, Ulrike Schlosser, Erwin Czech, Walter Kurtz, Karin H. Beck +2 more | 1999-04-06 |
DC
Doug R. Campbell
Overall (All Time): #3,646,466 of 4,157,543Top 90%
1
Patents All Time