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Patent US3519076A successfully refreshed from Google Patents.
US3519076A
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Gas injection method for recovering oil
Assignee: Mobil Oil AS
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Filing: 1968-10-17
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Granted: 1970-07-07
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Expires: 1988-10-17
Abstract
No abstract record available.
Inventors
- 👤 Donald Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:45
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/18; E21B43/20; E21B43/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1899497A
Cited
US2828819A
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US2842204A
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US2936030A
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US3215198A
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US3244228A
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US3288212A
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US3319712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |