US2759879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for hydrocarbon conversion with the use of a moving bed of catalysts at different temperature levels
Assignee: Union Oil Company of California
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Filing: 1951-04-26
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Granted: 1956-08-21
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Expires: 1971-04-26
Abstract
No abstract record available.
Inventors
- 👤 Clyde H O Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:55
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A PROCESS FOR EFFECTING THE CONTACT OF A SINGLE FLUID STREAM WITH A SINGLE GRANULAR SOLIDS STREAM AT TWO SUBSTANTIALLY DIFFERENT TEMPERATURE LEVELS WITHIN A SINGLE CONTACTING ZONE WHICH COMPRISES INTRODUCING SAID SOLIDS STREAM AT ONE TEMPERATURE LEVEL INTO ONE END OF SAID CONTACTING ZONE FOR PASSAGE THERETHROUGH, INTRODUCING SAID FLUID STREAM AT ANOTHER TEMPERATURE LEVEL INTO THE OTHER END OF SAID CONTACTING ZONE FOR COUNTERCURRENT PASSAGE THERETHROUGH, AND CONTROLLING THE MASS SPECIFIC HEAT RATIO OF SAID SOLIDS TO SAID FLUID AT A VALUE OF ABOUT 1.0 WHEREBY SAID UPPER PART OF SAID CONTACTING ZONE IS MAINTAINED AT A TEMPERATURE SUBSTANTIALLY EQUAL TO THE INLET TEMPERATURE OF SAID SOLIDS AND THE LOWER PART OF SAID CONTACTING ZONE IS MAINTAINED AT A TEMPERATURE SUBSTANTIALLY EQUAL TO THE INLET TEMPERATURE OF SAID FLUID, SAID PROCESS BEING EFFECTED IN THE ABSENCE OF FLUID VAPORIZATION, INDIRECT HEAT
Claim 2
Dependent Claim
143 words
A PROCESS FOR EFFECTING THE CONTACT OF A SINGLE FLUID STREAM WITH A SINGLE GRANULAR SOLIDS STREAM AT TWO SUBSTANTIALLY DIFFERENT TEMPERATURE LEVELS WITHIN A SINGLE CONTACTING ZONE WHICH COMPRISES INTRODUCING SAID SOLIDS STREAM AT ONE TEMPERATURE LEVEL INTO ONE END OF SAID CONTACTING ZONE FOR PASSAGE THERETHROUGH, INTRODUCING SAID FLUID STREAM AT ANOTHER TEMPERATURE LEVEL INTO THE OTHER END OF SAID CONTACTING ZONE FOR COUNTERCURRENT PASSAGE THERETHROUGH, AND CONTROLLING THE MASS SPECIFIC HEAT RATIO OF SAID SOLIDS TO SAID FLUID AT A VALUE OF ABOUT 1.0 WHEREBY SAID UPPER PART OF SAID CONTACTING ZONE IS MAINTAINED AT A TEMPERATURE SUBSTANTIALLY EQUAL TO THE INLET TEMPERATURE OF SAID SOLIDS AND THE LOWER PART OF SAID CONTACTING ZONE IS MAINTAINED AT A TEMPERATURE SUBSTANTIALLY EQUAL TO THE INLET TEMPERATURE OF SAID FLUID, SAID PROCESS BEING EFFECTED IN THE ABSENCE OF FLUID VAPORIZATION, INDIRECT HEAT
References Cited (Backward Citations)
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US2387378A
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US2441170A
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US2489628A
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US2448257A
Cited
US2614968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |