Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814518 | Process for extracting nitrohydroxyaromatics from aqueous solutions | Helmut Gossel, Herbert Kuckertz, Siegbert Rittner, Bernhard Wojtech | 1989-03-21 |
JR
Josef Rosenfelder
Overall (1989): #93,155 of 140,708Top 70%
1
Patents 1989