US3362473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterflood achieving high microscopic sweep efficiency
Assignee: Mobil Oil AS
•
Filing: 1965-06-28
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Granted: 1968-01-09
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Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 William R Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:26
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3100524A
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US3096820A
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US3163212A
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US3208518A
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US3292697A
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US3292698A
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US3302712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |