US3048221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon recovery by thermal drive
Assignee: Phillips Petroleum Co
•
Filing: 1958-05-12
•
Granted: 1962-08-07
•
Expires: 1978-05-12
Abstract
No abstract record available.
Inventors
- 👤 Tek Mehmet Rasin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:43
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243; E21B43/247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1322459A
Cited
US2734579A
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US1571883A
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US2112845A
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US2173556A
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US2793696A
Cited
US2801089A
Cited
US2819761A
Cited
US2853137A
Cited
US2946382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |