Occidental Oil Shale, Inc.
158Patents
0Active
158Granted
41Portfolio score
Filing activity: Apr 14, 1975 → Jun 27, 1985
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4093026A | Removal of sulfur dioxide from process gas using treated oil shale and water | Emerging Cross-Sectional Technologies | 278 | Expired |
| US4605489A | Upgrading shale oil by a combination process | Chemistry; Metallurgy | 221 | Expired |
| US4623444A | Upgrading shale oil by a combination process | Chemistry; Metallurgy | 218 | Expired |
| US4437519A | Reduction of shale oil pour point | Emerging Cross-Sectional Technologies | 215 | Expired |
| US4140181A | Two-stage removal of sulfur dioxide from process gas using treated oil shale | Emerging Cross-Sectional Technologies | 208 | Expired |
| US4029360A | Method of recovering oil and water from in situ oil shale retort flue gas | Fixed Constructions | 161 | Expired |
| US4151877A | Determining the locus of a processing zone in a retort through channels | Fixed Constructions | 111 | Expired |
| US4167291A | Method of forming an in situ oil shale retort with void volume as function of kerogen content of formation within retort site | Fixed Constructions | 44 | Expired |
| US4043595A | In situ recovery of shale oil | Fixed Constructions | 37 | Expired |
| US4149595A | In situ oil shale retort with variations in surface area corresponding to kerogen content of formation within retort site | Fixed Constructions | 37 | Expired |
| US4047760A | In situ recovery of shale oil | Fixed Constructions | 37 | Expired |
| US4423907A | In situ recovery of shale oil | Fixed Constructions | 35 | Expired |
| US4223726A | Determining the locus of a processing zone in an oil shale retort by effluent water composition | Fixed Constructions | 35 | Expired |
| US4239283A | In situ oil shale retort with intermediate gas control | Fixed Constructions | 35 | Expired |
| US4272127A | Subsidence control at boundaries of an in situ oil shale retort development region | Fixed Constructions | 30 | Expired |
| US4369842A | Analyzing oil shale retort off-gas for carbon dioxide to determine the combustion zone temperature | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4163475A | Determining the locus of a processing zone in an in situ oil shale retort | Fixed Constructions | 29 | Expired |
| US4372615A | Method of rubbling oil shale | Fixed Constructions | 29 | Expired |
| US4368921A | Non-subsidence method for developing an in situ oil shale retort | Fixed Constructions | 27 | Expired |
| US4397502A | Two-pass method for developing a system of in situ oil shale retorts | Fixed Constructions | 26 | Expired |
| US4294563A | Thermally insulated bulkhead for in situ oil shale retort | Fixed Constructions | 24 | Expired |
| US4036299A | Enriching off gas from oil shale retort | Fixed Constructions | 24 | Expired |
| US4082145A | Determining the locus of a processing zone in an in situ oil shale retort by sound monitoring | Fixed Constructions | 24 | Expired |
| US4106814A | Method of forming in situ oil shale retorts | Fixed Constructions | 23 | Expired |
| US4043597A | Multiple level preparation of oil shale retort | Fixed Constructions | 22 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.