Dovan; Hoai T.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Dovan; Hoai T..The latest application filed is for "ultra-high temperature stable gels".
- Dovan; Hoai T. - Yorba Linda CA
- Dovan; Hoai T. - Brea CA
- Dovan; Hoai T. - Fullerton CA
| Patent | Date |
|---|---|
| Ultra-high temperature stable gels Grant 5,957,203 - Hutchins , et al. September 28, 1 | 1999-09-28 |
| Method for modifying gelation time of organically crosslinked, aqueous gels Grant 5,617,920 - Dovan , et al. April 8, 1 | 1997-04-08 |
| High temperature stable gels Grant 5,486,312 - Sandiford , et al. January 23, 1 | 1996-01-23 |
| Composition for selectively reducing subterranean formation permeability Grant 5,418,217 - Hutchins , et al. * May 23, 1 | 1995-05-23 |
| Method for delaying gelation of a gelable polymer composition injected into a subterranean formation Grant 5,335,733 - Sandiford , et al. August 9, 1 | 1994-08-09 |
| Method for inhibiting caustic flood breakthrough Grant 5,291,949 - Dovan , et al. March 8, 1 | 1994-03-08 |
| Gel-forming composition Grant 5,268,112 - Hutchins , et al. December 7, 1 | 1993-12-07 |
| Crosslinked hydroxyethylcellulose and its uses Grant 5,263,540 - Dovan , et al. November 23, 1 | 1993-11-23 |
| High temperature stable gels Grant 5,246,073 - Sandiford , et al. September 21, 1 | 1993-09-21 |
| Recovery system containing lanthanide-crosslinked polymers Grant 5,226,480 - Dovan , et al. July 13, 1 | 1993-07-13 |
| Visible gels prepared using stainless steel as a crosslinking agent Grant 5,225,090 - Hutchins , et al. July 6, 1 | 1993-07-06 |
| Drilling mud disposal technique Grant 5,213,446 - Dovan May 25, 1 | 1993-05-25 |
| Lanthanide-crosslinked polymers for subterranean fluid containment Grant 5,211,858 - Dovan , et al. May 18, 1 | 1993-05-18 |
| Crosslinked hydroxyethylcellulose and its uses Grant 5,207,934 - Dovan , et al. May 4, 1 | 1993-05-04 |
| Method for reducing water production from wells Grant 5,161,615 - November 10, 1 | 1992-11-10 |
| Method for selectively reducing subterranean water permeability Grant 5,145,012 - Hutchins , et al. September 8, 1 | 1992-09-08 |
| Composition for selectively reducing subterranean formation permeability Grant 5,125,456 - Hutchins , et al. June 30, 1 | 1992-06-30 |
| Continuous permeability reduction in subterranean reservoirs Grant 4,783,492 - Dovan , et al. November 8, 1 | 1988-11-08 |
| Method for emplacement of a gelatinous foam in gas flooding enhanced recovery Grant 4,694,906 - Hutchins , et al. September 22, 1 | 1987-09-22 |
| Continuous permeability reduction in subterranean reservoirs Grant 4,534,412 - Dovan , et al. August 13, 1 | 1985-08-13 |
| Permeability reduction in subterranean reservoirs Grant 4,413,680 - Sandiford , et al. November 8, 1 | 1983-11-08 |
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