Patent US4585906A successfully refreshed from Google Patents.
US3076505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for initiation of in situ combustion
Assignee: Phillips Petroleum Co
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Filing: 1958-05-19
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Granted: 1963-02-05
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Expires: 1978-05-19
Abstract
No abstract record available.
Inventors
- 👤 Robert C Pryor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:05
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PROCESS FOR INITIATING IN SITU COMBUSTION IN A PERMEABLE CARBONACEOUS STRATUM PENETRATED BY AN INJECTION BOREHOLE AND AN IGNITION BOREHOLE, WHICH COMPRISES FLOWING AIR THRU SAID STRATUM BETWEEN SAID BOREHOLES SO AS TO FLUSH FLUIDS INTO AND PRODUCE SAME FROM ONE OF SAID
Claim 2
Dependent Claim
44 words
A PROCESS FOR INITIATING IN SITU COMBUSTION IN A PERMEABLE CARBONACEOUS STRATUM PENETRATED BY AN INJECTION BOREHOLE AND AN IGNITION BOREHOLE, WHICH COMPRISES FLOWING AIR THRU SAID STRATUM BETWEEN SAID BOREHOLES SO AS TO FLUSH FLUIDS INTO AND PRODUCE SAME FROM ONE OF SAID
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |