US3481399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of oil by flashing of heated connate water
Assignee: Pan American Petroleum Corp
•
Filing: 1968-06-10
•
Granted: 1969-12-02
•
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 12:23
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/30; E21B43/16; E21B43/24; E21B43/243; E21B43/247
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3036632A
Cited
US3129757A
Cited
US3171479A
Cited
US3167121A
Cited
US3179167A
Cited
US3223165A
Cited
US3244231A
Cited
US3384172A
Cited
US3399721A
Cited
US3399722A
Cited
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 |