Patent US2725348A successfully refreshed from Google Patents.
US2725348A
Expired / Lapsed
US
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Fluidized distillation of oil-bearing minerals
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1949-12-30
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Granted: 1955-11-29
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Expires: 1969-12-30
Abstract
No abstract record available.
Inventors
- 👤 Homer Z Martin
- 👤 Charles W Tyson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:06
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE PROCESS OF DISTILLING OIL-BEARING MINERALS IN THE FORM OF A HIGHLY TURBULENT, DENSE, FLUIDIZED MASS OF SUBDIVIDED SOLIDS, WHICH COMPRISES HEATING AN EXTRANEOUS SUBDIVIDED SOLID HEAT CARRIER HAVING A GAS SETTLING RATE HIGHER THAN THAT OF SAID SUBDIVIDED MINERALS TO AN ELEVATED TEMPERATURE BY INTIMATELY CONTACTING SAID HEAT CARRIER WITH A MASS OF HOT PARTICULATE SOLID RESIDUE OF SAID FIRST MENTIONED SOLIDS, TRANSFERRING SENSIBLE HEAT OF SAID HEATED HEAT CARRIER TO AN INCOMING MASS OF SAID MINERALS BY PASSING SAID HEATED HEAT CARRIER IN A SUBSTANTIALLY NON-TURBULENT CONDITION DOWNWARDLY THROUGH A SUBSTANTIALLY VERTICAL CONTACTING ZONE IN DIRECT COUNTERCURRENT HEAT EXCHANGE WITH AN UPWARDLY MOVING FLUIDIZED MASS OF SAID MINERALS, LIMITING THE FREE MOTION OF THE PARTICLES
Claim 2
Dependent Claim
117 words
THE PROCESS OF DISTILLING OIL-BEARING MINERALS IN THE FORM OF A HIGHLY TURBULENT, DENSE, FLUIDIZED MASS OF SUBDIVIDED SOLIDS, WHICH COMPRISES HEATING AN EXTRANEOUS SUBDIVIDED SOLID HEAT CARRIER HAVING A GAS SETTLING RATE HIGHER THAN THAT OF SAID SUBDIVIDED MINERALS TO AN ELEVATED TEMPERATURE BY INTIMATELY CONTACTING SAID HEAT CARRIER WITH A MASS OF HOT PARTICULATE SOLID RESIDUE OF SAID FIRST MENTIONED SOLIDS, TRANSFERRING SENSIBLE HEAT OF SAID HEATED HEAT CARRIER TO AN INCOMING MASS OF SAID MINERALS BY PASSING SAID HEATED HEAT CARRIER IN A SUBSTANTIALLY NON-TURBULENT CONDITION DOWNWARDLY THROUGH A SUBSTANTIALLY VERTICAL CONTACTING ZONE IN DIRECT COUNTERCURRENT HEAT EXCHANGE WITH AN UPWARDLY MOVING FLUIDIZED MASS OF SAID MINERALS, LIMITING THE FREE MOTION OF THE PARTICLES
References Cited (Backward Citations)
US1291137A
Cited
US2402875A
Cited
US2393636A
Cited
US2480670A
Cited
US2420376A
Cited
US2396709A
Cited
US2447306A
Cited
US2396036A
Cited
US2376564A
Cited
US2519340A
Cited
US2573906A
Cited
US2441170A
Cited
GB600326A
Cited
US2538219A
Cited
US2483485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |