Patent US2801089A successfully refreshed from Google Patents.
US2801089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underground shale retorting process
Assignee: California Research LLC
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Filing: 1955-03-14
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Granted: 1957-07-30
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Expires: 1975-03-14
Abstract
No abstract record available.
Inventors
- 👤 Jr John W Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:45
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/295; E21B43/16; E21B43/24; E21B43/243; E21B43/247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A PROCESS OF RECOVERING VOLATILIZABLE CONSTITUENTS FROM UNDERGROUND FORMATIONS OF CARBONACEOUS MATERIAL, SAID MATERIALS CONTAINING CHANNELS CAPABLE OF PERMITTING FLUID FLOW THERETHROUGH, SAID CHANNELS HAVING SUBSTANTIALLY EXPOSED WALLS OF SAID CARBONEOUS MATERIAL, WHICH COMPRISES PASSING A GASEOUS FLUID INTO SAID CHANNELS FROM A FUEL RELEASE POINT; ESTABLISHING A COMBUSTION ZONE AT A PREDETERMINED POSITION WITHIN AT LEAST ONE OF SAID CHANNELS DOWNSTREAM FROM SIAD FUEL RELEASE POINT BY RELEASING AN OXYGEN-CONTAINING GAS AT SAID POSITION; PASSING THE RESULTING GASEOUS AND VAPOROUS PRODUCTS OF RETORTING AND COMBUSTION THROUGH SAID CHANNELS INTO A SEPARATOR; RECOV-ERILNG THE NORMALLY LIQUID CONSTITUENTS FROM SAID SEPARATOR AND RETURNING AT LEAST A PORTION OF THE UNCONDENSED PRODUCT GASES AS THE GASEOUS FUEL TO SAID CHANNELS AT SAID FUEL RELEASE POINT; AND PROGRESSIVELY ADVANCING THE RELEASE POINT OF SAID OXYGEN-CONTAINING GAS IN THE DIRECTION OF GAS FLOW IN SAID CHANNELS TO EFFECT A CORRESPONDING MOVE-
Claim 2
Dependent Claim
147 words
A PROCESS OF RECOVERING VOLATILIZABLE CONSTITUENTS FROM UNDERGROUND FORMATIONS OF CARBONACEOUS MATERIAL, SAID MATERIALS CONTAINING CHANNELS CAPABLE OF PERMITTING FLUID FLOW THERETHROUGH, SAID CHANNELS HAVING SUBSTANTIALLY EXPOSED WALLS OF SAID CARBONEOUS MATERIAL, WHICH COMPRISES PASSING A GASEOUS FLUID INTO SAID CHANNELS FROM A FUEL RELEASE POINT; ESTABLISHING A COMBUSTION ZONE AT A PREDETERMINED POSITION WITHIN AT LEAST ONE OF SAID CHANNELS DOWNSTREAM FROM SIAD FUEL RELEASE POINT BY RELEASING AN OXYGEN-CONTAINING GAS AT SAID POSITION; PASSING THE RESULTING GASEOUS AND VAPOROUS PRODUCTS OF RETORTING AND COMBUSTION THROUGH SAID CHANNELS INTO A SEPARATOR; RECOV-ERILNG THE NORMALLY LIQUID CONSTITUENTS FROM SAID SEPARATOR AND RETURNING AT LEAST A PORTION OF THE UNCONDENSED PRODUCT GASES AS THE GASEOUS FUEL TO SAID CHANNELS AT SAID FUEL RELEASE POINT; AND PROGRESSIVELY ADVANCING THE RELEASE POINT OF SAID OXYGEN-CONTAINING GAS IN THE DIRECTION OF GAS FLOW IN SAID CHANNELS TO EFFECT A CORRESPONDING MOVE-
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) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |