Patent US3072190A successfully refreshed from Google Patents.
US3072190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition for in situ combustion
Assignee: Phillips Petroleum Co
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Filing: 1959-03-30
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Granted: 1963-01-08
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Expires: 1979-03-30
Abstract
No abstract record available.
Inventors
- 👤 Alfred D Reichle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:44
CPC Classifications
E; E21; E21B; E21B36/00; E21B36/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
A PROCESS FOR QUICKLY AND SIMULTANEOUSLY IGNITING A SELECTED ELONGATED SECTION OF A CARBONACEOUS STRATUM ALONG THE WALL OF A BOREHOLD THEREIN WHICH COMPRISES SIMULTANEOUSLY IGNITING AN ELONGATED PERMEABLE FUEL PACK IN A SELECTED SECTION OF SAID BOREHOLE AT A PLURALITY OF REGIONS AT FREQUENT INTERVALS ALONG THE LENGTH OF SAID FUEL PACK BY HEATING SAME SIMULTANEOUSLY AT EACH OF SAID REGIONS TO COMBUSTION-SUPPORTING TEMPERATURE AND INJECTING COMBUSTION-SUPPORTING GAS THERETO; CONTINUING THE INJEC-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |