US3051644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recovering oil from oil shale
Assignee: Texaco Inc
•
Filing: 1959-07-01
•
Granted: 1962-08-28
•
Expires: 1979-07-01
Abstract
No abstract record available.
Inventors
- 👤 Louis D Friedman
- 👤 Leon P Gaucher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:46
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA450168A
Cited
US1487541A
Cited
US1486243A
Cited
US2665238A
Cited
US2793104A
Cited
US2772209A
Cited
US2847306A
Cited
US2911349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |