Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4784838 | Method of stabilizing solutions of chelated polyvalent metals | Earl S. Snavely, Jr. | 1988-11-15 |
| 4775793 | Method for determining chelated ferric ion concentration | — | 1988-10-04 |
| 4773480 | Method for selectively plugging deep subterranean formations with polysulfides | — | 1988-09-27 |
| 4773483 | Method for selectively plugging subterranean formations with polysulfides | — | 1988-09-27 |
| 4658898 | Oil reservoir permeability control using polymeric gels | Edwin T. Strom | 1987-04-21 |
| 4613631 | Crosslinked polymers for enhanced oil recovery | Wilton F. Espenscheid | 1986-09-23 |
| 4606895 | Ion exchange loading | — | 1986-08-19 |
| 4536034 | Method for immobilizing contaminants in previously leached ores | John B. Otto, Jr. | 1985-08-20 |
| 4372616 | Method for restoring formation previously leached with an ammonium leach solution | Wilton F. Espenscheid | 1983-02-08 |
| 4302428 | Yellowcake processing in uranium recovery | — | 1981-11-24 |
| 4293528 | Yellowcake processing in uranium recovery | — | 1981-10-06 |