Pearson; Durk J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Pearson; Durk J..The latest application filed is for "controlled retorting methods for recovering shale oil from rubblized oil shale and methods for making permeable masses of rubblized oil shale".
- Pearson; Durk J. - Palos Verdes Estates CA
| Patent | Date |
|---|---|
| Controlled retorting methods for recovering shale oil from rubblized oil shale and methods for making permeable masses of rubblized oil shale Grant 4,366,986 - Bohn , et al. January 4, 1 | 1983-01-04 |
| Pressure swing recovery system for mineral deposits Grant 4,163,580 - Pearson , et al. August 7, 1 | 1979-08-07 |
| Thermomechanical fracture for recovery system in oil shale deposits Grant 4,083,604 - Bohn , et al. April 11, 1 | 1978-04-11 |
| Recovery system for oil shale deposits Grant 4,065,183 - Hill , et al. December 27, 1 | 1977-12-27 |
| Pressure swing recovery system for oil shale deposits Grant 4,059,308 - Pearson , et al. November 22, 1 | 1977-11-22 |
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