US3386504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of hydrocarbons from underground formations by in situ combustion
Assignee: Texaco Inc
•
Filing: 1965-12-29
•
Granted: 1968-06-04
•
Expires: 1985-12-29
Abstract
No abstract record available.
Inventors
- 👤 Robert E Kunetka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:55
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/30; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3057403A
Cited
US3153448A
Cited
US3152638A
Cited
US3167117A
Cited
US3246693A
Cited
US3253652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |