Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876018 | Use of organic fluorochemical compounds with oleophobic and hydrophobic groups in asphaltenic crude oils as viscosity reducing agents | — | 1989-10-24 |
| 4836958 | Fluorinated cationic compounds | — | 1989-06-06 |
| 4823873 | Steam mediated fluorochemically enhanced oil recovery | — | 1989-04-25 |