Patent US3441083A successfully refreshed from Google Patents.
US3441083A
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Method of recovering hydrocarbon fluids from a subterranean formation
Assignee: Tenneco Oil Co
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Filing: 1967-11-09
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Granted: 1969-04-29
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Expires: 1987-11-09
Abstract
No abstract record available.
Inventors
- 👤 Benny M Fitzgerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:33
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243; E21B43/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3048221A
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US3000441A
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US3129758A
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US3120870A
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US3316962A
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US3358759A
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US3380527A
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US3384172A
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US3358754A
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US3385361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |