US3003554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary recovery process with controlled density fluid drive
Assignee: Pan American Petroleum Corp
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Filing: 1957-12-05
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Granted: 1961-10-10
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Expires: 1977-12-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Forrest F Craig
- 👤 Howard N Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:13
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2742089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |