Patent US2508993A successfully refreshed from Google Patents.
US2508993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for conducting gaseous reactions in the presence of a moving particle form solid
Assignee: ExxonMobil Oil Corp
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Filing: 1947-05-16
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Granted: 1950-05-23
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Expires: 1967-05-16
Abstract
No abstract record available.
Inventors
- 👤 Jr John A Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:01
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12; B01J8/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
251 words
A METHOD FOR CONDUCTING THERMO-CHEMICAL CONVERSIONS OF FLUID REACTANTS AT CONTROLLED ELEVATED TEMPERATURES IN THE PRESSENCE OF A SUITABLE MOVING PARTICLE-FORM SOLID CONTACT MATERIAL WHICH COMPRISES: CONTACTING SAID FLUID REACTANTS AT A SUITABLE ELEVATED CONVERSION TEMPERATURE WITH A SUBSTANTIALLY COMPACT COLUMN OF DOWNWARDLY MOVING SOLID PARTICLE-FORM CONTACT MATERIAL IN A CONFINED REACTION ZONE TO EFFECT SAID CONVERSION OF SAID REACTANTS, WITHDRAWING FLUID CONVERSION PRODUCTS FROM SAID REACTION ZONE, WITHDRAWING USED CONTACT MATERIAL FROM SAID REACTION ZONE AND PASSING IT AS A SUBSTANTIALLY COMPACT COLUMN THROUGH A CONFINED COOLING ZONE, INTRODUCING A SUITABLE HEAT EXCHANGE GAS INTO SAID COLUMN IN SAID COOLING ZONE AT A TEMPERATURE SUBSTANTIALLY BELOW THAT OF SAID CONTACT MATERIAL ENTERING SAID COOLING ZONE AND PASSING SAID GAS THROUGH SAID COLUMN IN SAID COOLING ZONE TO COOL THE CONTACT MATERIAL SUBSTANTIALLY BELOW THE TEMPERATURE IN SAID REACTION ZONE, PASSING THE COOLED CONTACT MATERIAL FROM SAID COOLING ZONE THROUGH A SEPARATE RECONDITIONING ZONE WHEREIN IT IS TREATED TO RENDER IT SUITABLE FOR REUSE IN SAID REACTION ZONE, PASSING THE RECONDITIONED CONTACT MATERIAL TO A HEATING ZONE AND PASSING IT THROUGH SAID HEATING ZONE AS A SUBSTANTIALLY COMPACT COLUMN, WITHDRAWING SAID HEAT EXCHANGE GAS FROM SAID COOLING ZONE AND PASSING IT THROUGH SAID COLUMN IN SAID HEATING ZONE SO AS TO TRANSFER HEAT REMOVED FROM SAID CONTACT MATERIAL PASSING THROUGH SAID COOLING ZONE BACK TO SAID CONTACT MATERIAL PASSING THROUGH SAID HEATING ZONE, WITHDRAWING THE RESULTING COOLED HEAT EXCHANGE GAS FROM SAID HEATING ZONE AND RETURNING IT TO SAID COOLING ZONE.
Claim 2
Independent Claim
251 words
A METHOD FOR CONDUCTING THERMO-CHEMICAL CONVERSIONS OF FLUID REACTANTS AT CONTROLLED ELEVATED TEMPERATURES IN THE PRESSENCE OF A SUITABLE MOVING PARTICLE-FORM SOLID CONTACT MATERIAL WHICH COMPRISES: CONTACTING SAID FLUID REACTANTS AT A SUITABLE ELEVATED CONVERSION TEMPERATURE WITH A SUBSTANTIALLY COMPACT COLUMN OF DOWNWARDLY MOVING SOLID PARTICLE-FORM CONTACT MATERIAL IN A CONFINED REACTION ZONE TO EFFECT SAID CONVERSION OF SAID REACTANTS, WITHDRAWING FLUID CONVERSION PRODUCTS FROM SAID REACTION ZONE, WITHDRAWING USED CONTACT MATERIAL FROM SAID REACTION ZONE AND PASSING IT AS A SUBSTANTIALLY COMPACT COLUMN THROUGH A CONFINED COOLING ZONE, INTRODUCING A SUITABLE HEAT EXCHANGE GAS INTO SAID COLUMN IN SAID COOLING ZONE AT A TEMPERATURE SUBSTANTIALLY BELOW THAT OF SAID CONTACT MATERIAL ENTERING SAID COOLING ZONE AND PASSING SAID GAS THROUGH SAID COLUMN IN SAID COOLING ZONE TO COOL THE CONTACT MATERIAL SUBSTANTIALLY BELOW THE TEMPERATURE IN SAID REACTION ZONE, PASSING THE COOLED CONTACT MATERIAL FROM SAID COOLING ZONE THROUGH A SEPARATE RECONDITIONING ZONE WHEREIN IT IS TREATED TO RENDER IT SUITABLE FOR REUSE IN SAID REACTION ZONE, PASSING THE RECONDITIONED CONTACT MATERIAL TO A HEATING ZONE AND PASSING IT THROUGH SAID HEATING ZONE AS A SUBSTANTIALLY COMPACT COLUMN, WITHDRAWING SAID HEAT EXCHANGE GAS FROM SAID COOLING ZONE AND PASSING IT THROUGH SAID COLUMN IN SAID HEATING ZONE SO AS TO TRANSFER HEAT REMOVED FROM SAID CONTACT MATERIAL PASSING THROUGH SAID COOLING ZONE BACK TO SAID CONTACT MATERIAL PASSING THROUGH SAID HEATING ZONE, WITHDRAWING THE RESULTING COOLED HEAT EXCHANGE GAS FROM SAID HEATING ZONE AND RETURNING IT TO SAID COOLING ZONE.
References Cited (Backward Citations)
US2239801A
Cited
US2399450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |