Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4790930 | Two-step heterocyclic nitrogen extraction from petroleum oils | Don M. Washecheck | 1988-12-13 |
| 4749472 | Two step heterocyclic nitrogen extraction from petroleum oils | — | 1988-06-07 |
| 4671865 | Two step heterocyclic nitrogen extraction from petroleum oils | Donald M. Washecheck | 1987-06-09 |
| 4623444 | Upgrading shale oil by a combination process | Stanley C. Che | 1986-11-18 |
| 4605489 | Upgrading shale oil by a combination process | — | 1986-08-12 |
| 4454366 | Method of recovering and recycling boron trifluoride catalyst | Roger F. Vogel, Harold E. Swift | 1984-06-12 |
| 4433197 | Removing boron trifluoride from coordination compound contaminants in organic liquids | Roger F. Vogel, Harold E. Swift | 1984-02-21 |
| 4426280 | Process for removing nitrogen from shale oil | Paul Y. Chen | 1984-01-17 |
| 4394296 | Boron trifluoride-water-silica catalyst | Harold E. Swift | 1983-07-19 |
| 4384162 | Removing boron trifluoride contaminant from organic liquids with polyvinyl alcohol | Roger F. Vogel, Harold E. Swift | 1983-05-17 |
| 4382912 | Selective combusting of hydrogen sulfide in carbon dioxide injection gas | Harold E. Swift | 1983-05-10 |
| 4381641 | Substoichiometric combustion of low heating value gases | Harold E. Swift | 1983-05-03 |
| 4378048 | Substoichiometric combustion of low heating value gases using different platinum catalysts | Harold E. Swift | 1983-03-29 |
| 4366668 | Substoichiometric combustion of low heating value gases | Roger F. Vogel, Harold E. Swift | 1983-01-04 |
| 4363361 | Substoichiometric combustion of low heating value gases | Roger F. Vogel | 1982-12-14 |
| 4308414 | Oligomerizing alpha-olefins with a heterogeneous catalyst | Harold E. Swift | 1981-12-29 |
| 4299086 | Utilization of energy obtained by substoichiometric combustion of low heating value gases | Roger F. Vogel, Harold E. Swift | 1981-11-10 |
| 4273188 | In situ combustion process for the recovery of liquid carbonaceous fuels from subterranean formations | Roger F. Vogel, Harold E. Swift | 1981-06-16 |
| 4263467 | Recovery of boron trifluoride from a hydrocarbon liquid | Robert Bartek | 1981-04-21 |
| 4250962 | In situ combustion process for the recovery of liquid carbonaceous fuels from subterranean formations | Roger F. Vogel, Harold E. Swift | 1981-02-17 |
| 4213001 | Oligomerizing alpha-olefins with a heterogeneous catalyst | Harold E. Swift, Barrett L. Cupples | 1980-07-15 |
| 4191733 | Reduction of carbon monoxide in substoichiometric combustion | Harold E. Swift, Roger F. Vogel | 1980-03-04 |
| 4186801 | In situ combustion process for the recovery of liquid carbonaceous fuels from subterranean formations | Roger F. Vogel, Harold E. Swift | 1980-02-05 |