Issued Patents All Time
Showing 126–150 of 156 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363717 | Conversion of heavy hydrocarbon oils | Bruce P. Pelrine, Nai Y. Chen | 1982-12-14 |
| 4358554 | Process for repairing asphalt pavement | Costandi A. Audeh | 1982-11-09 |
| 4354928 | Supercritical selective extraction of hydrocarbons from asphaltic petroleum oils | Costandi A. Audeh | 1982-10-19 |
| 4351566 | Method and apparatus for mixing gaseous oxidant and lixiviant in an in situ leach operation | Wilton F. Espenscheid | 1982-09-28 |
| 4350391 | In situ leaching process | — | 1982-09-21 |
| 4346936 | Treatment of subterranean uranium-bearing formations | — | 1982-08-31 |
| 4340252 | Process for the in-situ leaching of uranium | Wilton F. Espenscheid | 1982-07-20 |
| 4337979 | Process for the in-situ leaching of uranium | — | 1982-07-06 |
| 4334976 | Upgrading of residual oil | — | 1982-06-15 |
| 4317711 | Coprocessing of residual oil and coal | — | 1982-03-02 |
| 4312838 | Ion exchange resins of high loading capacity, high chloride tolerance and rapid elution for uranium recovery | — | 1982-01-26 |
| 4303494 | Continuous reaction/separation method for nucleated growth reactions | Darrell D. Whitehurst | 1981-12-01 |
| 4300860 | Method of treating a subterranean formation to remove ammonium ions | — | 1981-11-17 |
| 4298578 | Leach method including means to protect ion exchange resin | Raymond L. Lozano | 1981-11-03 |
| 4296075 | Method for protecting an ion-exchange resin from chemical poisoning | — | 1981-10-20 |
| 4280985 | Process for the elution of ion exchange resins in uranium recovery | — | 1981-07-28 |
| 4278292 | Clay stabilization in uranium leaching and restoration | Wilton F. Espenscheid | 1981-07-14 |
| 4278469 | Process for repairing asphalt pavement | Costandi A. Audeh | 1981-07-14 |
| 4273645 | Solvent extraction production of lube oil fractions | Costandi A. Audeh, Israel J. Heilweil, James R. White | 1981-06-16 |
| 4247384 | Liquefaction of carbonaceous materials | Nai Y. Chen, Dennis E. Walsh, Darrell D. Whitehurst | 1981-01-27 |
| 4241026 | Ion exchange process for the recovery of uranium | — | 1980-12-23 |
| 4240901 | Process for refining hydrocarbon oils | Costandi A. Audeh | 1980-12-23 |
| 4234231 | Method for restoring a leached formation | — | 1980-11-18 |
| 4218427 | Method for NO.sub.x removal from stack gases | — | 1980-08-19 |
| 4211576 | Pitch and asphalt compositions | — | 1980-07-08 |