Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5139088 | Method of inhibiting asphalt precipitation in an oil production well | Lodewikus N. J. De Jong | 1992-08-18 |
RB
Roelof B. De Boer
Overall (All Time): #3,857,160 of 4,157,543Top 95%
1
Patents All Time