Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828715 | Cleaning and disposal of carbon black and ash containing wastewaters | Bruno Sander, Gero Lueth, Robert K. Horn, Uwe Kempe | 1989-05-09 |
SM
Siegfried Marquardt
Overall (1989): #56,273 of 140,708Top 40%
1
Patents 1989