Patent US3084919A successfully refreshed from Google Patents.
US3084919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of oil from oil shale by underground hydrogenation
Assignee: Texaco Inc
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Filing: 1960-08-03
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Granted: 1963-04-09
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Expires: 1980-08-03
Abstract
No abstract record available.
Inventors
- 👤 William L Slater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:47
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A PROCESS FOR OBTAINING SHALE OIL FROM A SUBTERRANEAN OIL SHALE STRATUM PENETRATED BY A WELL BORE PROVIDED WITH TUBING EXTENDING FROM THE SURFACE OF THE EARTH INTO THE OIL SHALE FORMATION, WHICH COMPRISES SUPPLYING LIQUID HYDROCARBON FUEL TO THE BOTTOM OF SAID
Claim 2
Dependent Claim
43 words
A PROCESS FOR OBTAINING SHALE OIL FROM A SUBTERRANEAN OIL SHALE STRATUM PENETRATED BY A WELL BORE PROVIDED WITH TUBING EXTENDING FROM THE SURFACE OF THE EARTH INTO THE OIL SHALE FORMATION, WHICH COMPRISES SUPPLYING LIQUID HYDROCARBON FUEL TO THE BOTTOM OF SAID
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |