US2953205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for initiating in situ combustion
Assignee: Phillips Petroleum Co
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Filing: 1958-07-28
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Granted: 1960-09-20
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Expires: 1978-07-28
Abstract
No abstract record available.
Inventors
- 👤 Donald E Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:00
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR IGNITING A CARBONACEOUS STRATUM WHICH COMPRISES INTRODUCING LIQUID HYDRAZINE INTO SAID STRATUM TO SATURATE A SELECTED AREA THEREOF AND EFFECTING DECOMPOSITION OF SAID HYDRAZINE SO AS TO HEAT SAID STRATUM TO COMBUSTION SUPPORTING TEMPERATURE, AND CONTACTING THE HEATED STRATUM WITH O2-CONTAINING GAS SO AS TO IGNITE SAME.
Claim 2
Dependent Claim
50 words
A PROCESS FOR IGNITING A CARBONACEOUS STRATUM WHICH COMPRISES INTRODUCING LIQUID HYDRAZINE INTO SAID STRATUM TO SATURATE A SELECTED AREA THEREOF AND EFFECTING DECOMPOSITION OF SAID HYDRAZINE SO AS TO HEAT SAID STRATUM TO COMBUSTION SUPPORTING TEMPERATURE, AND CONTACTING THE HEATED STRATUM WITH O2-CONTAINING GAS SO AS TO IGNITE SAME.
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |