Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857207 | Process for reducing the phenol content in phenol-containing waters | Ulrich Hars, Rolf Staiger | 1989-08-15 |
KW
Karl Kurt Rocco Westphal
Overall (1989): #89,416 of 140,708Top 65%
1
Patents 1989