Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859642 | Fixed-bed catalyst structure obtained using honeycomb elements | Wolfgang Hoelderich, Michael Kroener, Peter Kroetzsch | 1989-08-22 |
WB
Werner Biffar
Overall (1989): #45,297 of 140,708Top 35%
1
Patents 1989