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, Werner Biffar | 1989-08-22 |
PK
Peter Kroetzsch
Overall (1989): #69,660 of 140,708Top 50%
1
Patents 1989