US3468376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal conversion of oil shale into recoverable hydrocarbons
Assignee: Mobil Oil AS
•
Filing: 1967-02-10
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Granted: 1969-09-23
•
Expires: 1987-02-10
Abstract
No abstract record available.
Inventors
- 👤 Marion L Slusser
- 👤 William E Bramhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:46
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2796129A
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US2825408A
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US3241611A
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US3233668A
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US3284281A
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US3362471A
Cited
US3400762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |