Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835335 | Process for two-stage catalytic conversion of an olefins-containing feed | Pierre Grandvallet, Andras G. T. G. Kortbeek | 1989-05-30 |
JB
Johannes Petrus Van Den Berg
Overall (1989): #92,423 of 140,708Top 70%
1
Patents 1989