Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4513819 | Cyclic solvent assisted steam injection process for recovery of viscous oil | Winston R. Shu | 1985-04-30 |
| 4444261 | High sweep efficiency steam drive oil recovery method | — | 1984-04-24 |