Patent US3481399A successfully refreshed from Google Patents.
US3481399A
Expired / Lapsed
US
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Recovery of oil by flashing of heated connate water
Assignee: Pan American Petroleum Corp
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Filing: 1968-06-10
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Granted: 1969-12-02
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Expires: 1988-06-10
Abstract
No abstract record available.
Inventors
- 👤 Karol L Hujsak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:11
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/30; E21B43/16; E21B43/24; E21B43/243; E21B43/247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3036632A
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US3129757A
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US3171479A
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US3167121A
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US3179167A
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US3223165A
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US3244231A
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US3384172A
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US3399721A
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US3399722A
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US3411575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |