US3476182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of hydrocarbon production by secondary recovery using a modified inverted 9-spot well pattern
Assignee: Texaco Inc
•
Filing: 1967-08-17
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Granted: 1969-11-04
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Expires: 1987-08-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:18
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/30; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2885002A
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US3143169A
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US3150715A
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US3113616A
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US3113617A
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US3120870A
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US3393734A
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US3393735A
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US3358754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |