US2634233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-type retorting of oil shale
Assignee: Standard Oil Development Co
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Filing: 1949-06-16
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Granted: 1953-04-07
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Expires: 1969-06-16
Abstract
No abstract record available.
Inventors
- 👤 Lloyd A Nicolai
- 👤 Byron V Molstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:17
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
94 words
IN THE PROCESS OF DISTILLING OIL-BEARING MINERALS OF THE TYPE OF OIL SHALE WHICH DISINTEGRATE DURING DISTILLATION, WHEREIN THE SUBDIVIDED MINERALS ARE SUBJECTED TO A DISTILLATION TEMPERATURE IN THE FORM OF A HIGHLY TURBULENT DENSE MASS FLUIDIZED BY AN UPWARDLY FLOWING GASIFORM MEDIUM IN A DISTILLATION ZONE AND THE HEAT REQUIRED BY THE DISTILLATION IS SUPPLIED BY BURNING SOLID DISTILLATION RESIDUE WITH A COMBUSTION-SUPPORTING GAS IN THE FORM OF A FLUIDIZED MASS OF SOLIDS IN A SEPARATE COMBUSTION ZONE AT A COMBUSTION TEMPERATURE AND RETURNING SOLID COMBUSTION REDISUE SUBSTANTIALLY AT SAID COMBUSTION TEMPERATURE TO
Claim 2
Dependent Claim
94 words
IN THE PROCESS OF DISTILLING OIL-BEARING MINERALS OF THE TYPE OF OIL SHALE WHICH DISINTEGRATE DURING DISTILLATION, WHEREIN THE SUBDIVIDED MINERALS ARE SUBJECTED TO A DISTILLATION TEMPERATURE IN THE FORM OF A HIGHLY TURBULENT DENSE MASS FLUIDIZED BY AN UPWARDLY FLOWING GASIFORM MEDIUM IN A DISTILLATION ZONE AND THE HEAT REQUIRED BY THE DISTILLATION IS SUPPLIED BY BURNING SOLID DISTILLATION RESIDUE WITH A COMBUSTION-SUPPORTING GAS IN THE FORM OF A FLUIDIZED MASS OF SOLIDS IN A SEPARATE COMBUSTION ZONE AT A COMBUSTION TEMPERATURE AND RETURNING SOLID COMBUSTION REDISUE SUBSTANTIALLY AT SAID COMBUSTION TEMPERATURE TO
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) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |