Patent US2544912A successfully refreshed from Google Patents.
US2544912A
Expired / Lapsed
US
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Shale distillation with fluidized residue treatment
Assignee: Texaco Inc
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Filing: 1946-05-29
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Granted: 1951-03-13
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Expires: 1966-05-29
Abstract
No abstract record available.
Inventors
- 👤 Harold V Atwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:46
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/02; Y; Y10; Y10S; Y10S48/00; Y10S48/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE METHOD OF DISTILLING OIL SHALES THAT COMPRISES CHARGING LUMP SHALE TO A DISTILLING ZONE, INTRODUCING GAS HEATED AS HEREINAFTER SPECIFIED TO THE DISTILLING ZONE TO EFFECT DESTRUCTIVE DISTILLATION OF THE SHALE AND PRODUCT RESULTANT DISINTEGRATION THEREOF WHICH FORMATION OF COMMINUTED RESIDUE SHALE, WITHDRAWING COMMINUTED RESIDUAL SHALE CONTAINING CARBONACEOUS MATERIAL FROM THE DISTILLING ZONE AND FLUIDIZING IT IN A FLUIDIZING MEDIUM, TRASPORTING THE COMMUNITED RESIDUAL SHALE IN SUSPENSION IN THE FLUIDIZING MEDIUM TO A COMBUSTION ZONE, SUBJECTING THE FLUIDIZED COMMINUTED RESIDUAL SHALE THEREIN TO COMBUSTION UNDER FLUIDIZED CONDITIONS, SEPARATELY WITHDRAWING RESULTANT HIGHLY HEATED COMMINUTED BURNED SHALE FROM THE COMBUSTION ZONE, FLUIDIZING IT WITH GAS AND PASSING THE FLUIDIZED STREAM INTO A ZONE WHEREIN THE GAS AND COMMINUTED SHALE ARE IN CONTACT IN DENSE PHASE AND
Claim 2
Independent Claim
125 words
THE METHOD OF DISTILLING OIL SHALES THAT COMPRISES CHARGING LUMP SHALE TO A DISTILLING ZONE, INTRODUCING GAS HEATED AS HEREINAFTER SPECIFIED TO THE DISTILLING ZONE TO EFFECT DESTRUCTIVE DISTILLATION OF THE SHALE AND PRODUCT RESULTANT DISINTEGRATION THEREOF WHICH FORMATION OF COMMINUTED RESIDUE SHALE, WITHDRAWING COMMINUTED RESIDUAL SHALE CONTAINING CARBONACEOUS MATERIAL FROM THE DISTILLING ZONE AND FLUIDIZING IT IN A FLUIDIZING MEDIUM, TRASPORTING THE COMMUNITED RESIDUAL SHALE IN SUSPENSION IN THE FLUIDIZING MEDIUM TO A COMBUSTION ZONE, SUBJECTING THE FLUIDIZED COMMINUTED RESIDUAL SHALE THEREIN TO COMBUSTION UNDER FLUIDIZED CONDITIONS, SEPARATELY WITHDRAWING RESULTANT HIGHLY HEATED COMMINUTED BURNED SHALE FROM THE COMBUSTION ZONE, FLUIDIZING IT WITH GAS AND PASSING THE FLUIDIZED STREAM INTO A ZONE WHEREIN THE GAS AND COMMINUTED SHALE ARE IN CONTACT IN DENSE PHASE AND
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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) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |