Issued Patents All Time
Showing 51–58 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5145012 | Method for selectively reducing subterranean water permeability | Burton B. Sandiford, Hoai T. Dovan | 1992-09-08 |
| 5139087 | Method for ensuring injectivity of polymer solutions | Hoai T. Dovan | 1992-08-18 |
| 5125456 | Composition for selectively reducing subterranean formation permeability | Hoai T. Dovan | 1992-06-30 |
| 5111886 | Crosslinked hydroxyethylcellulose and its uses | Hoai T. Dovan | 1992-05-12 |
| 4783492 | Continuous permeability reduction in subterranean reservoirs | Hoai T. Dovan | 1988-11-08 |
| 4694906 | Method for emplacement of a gelatinous foam in gas flooding enhanced recovery | Hoai T. Dovan | 1987-09-22 |
| 4534412 | Continuous permeability reduction in subterranean reservoirs | Hoai T. Dovan | 1985-08-13 |
| 4413680 | Permeability reduction in subterranean reservoirs | Burton B. Sandiford, Hoai T. Dovan | 1983-11-08 |