Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836281 | Process for improving the gas sweeping of an oil formation, using foams mainly containing surfactants with perfluoric groups | Claude Demay | 1989-06-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836281 | Process for improving the gas sweeping of an oil formation, using foams mainly containing surfactants with perfluoric groups | Claude Demay | 1989-06-06 |