US2847306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovery of oil from shale
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-07-01
•
Granted: 1958-08-12
•
Expires: 1973-07-01
Abstract
No abstract record available.
Inventors
- 👤 Stewart Joseph
- 👤 Stewart C Fulton
- 👤 Jr Arthur W Langer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:48
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/04; C10G1/042; C10G1/006; C10G45/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2467920A
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US2614067A
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US2658861A
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US2601257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |