Patent JPS563570A successfully refreshed from Google Patents.
US2687992A
Expired / Lapsed
US
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Conversion of heavy petroleums in a fluidized coking operation
Assignee: Universal Oil Products Co
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Filing: 1949-06-28
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Granted: 1954-08-31
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Expires: 1969-06-28
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Leffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:52
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/38; B01J8/384; B01J8/386; C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; C10G; C10G9/00; C10G9/28; C10G9/32
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
132 words
A METHOD FOR CONVERTING A HYDROCARBON CHARGE STREAM INTO LOWER BOILING PRODUCTS AND COKE PARTICLES, WHICH COMPRISES DISPERSING SAID HYDROCARBON CHARGE STREAM UPWARDLY INTO A CONFINED COKING ZONE CONCURRENTLY WITH A GASEOUS HEAT-CARRYING MEDIUM, EFFECTING A HIGH TEMPERATURE CONTACT OF THE DISPERSED STREAM AND GASEOUS MEDIUM WITH AN ASCENDING FLUIDIZED BED OF HEATED COKE PARTICLES WITHIN SAID COKING ZONE AND DURING SAID CONTACT TRANSFORMING SAID HYDROCARBON CHARGE INTO GASIFORM DISTILLATION AND CONVERSION PRODUCTS AND ADDITIONAL COKE, DISCHARGING COKE PARTICLES FROM THE UPPER PORTION OF THE COKING ZONE AND PASSING THEM DOWNWARDLY IN A CONFINED DRYING ZONE CONTIGUOUS WITH SAID COKING ZONE AND MAINTAINED UNDER NON-OXIDIZING CONDITIONS, PASSING A HOT GASEOUS NON-OXIDIZING DRYING MEDIUM INTO AND UPWARDLY THROUGH SAID DRYING ZONE AND THEREIN HEATING AND MAINTAINING SAID PARTICLES IN A DESCENDING FLUIDIZED BED,
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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) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |