Patent US3384172A successfully refreshed from Google Patents.
US3384172A
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US
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Producing petroleum by forward combustion and cyclic steam injection
Assignee: Pan American Petroleum Corp
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Filing: 1965-11-19
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Granted: 1968-05-21
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Expires: 1985-11-19
Abstract
No abstract record available.
Inventors
- 👤 Karol L Hujsak
- 👤 Grekel Howard
- 👤 Mungen Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:30
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2901043A
Cited
US3036632A
Cited
US3064728A
Cited
US3129757A
Cited
US3111986A
Cited
US3180414A
Cited
US3171479A
Cited
US3179167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |