Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820429 | Surfactant compositions for steamfloods | — | 1989-04-11 |
TL
Timothy Lim
Overall (1989): #49,537 of 140,708Top 40%
1
Patents 1989