Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795726 | Method for the regeneration of spent alumina-based catalysts | Herman W. Kouwenhoven | 1989-01-03 |
HS
Hennie Schaper
Overall (1989): #106,219 of 140,708Top 80%
1
Patents 1989