US3130146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of coke
Assignee: Phillips Petroleum Co
•
Filing: 1961-04-24
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Granted: 1964-04-21
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Expires: 1981-04-24
Abstract
No abstract record available.
Inventors
- 👤 William E Piaster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:49
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR COKING PETROLEUM RESIDUE WHICH COMPRISES SPRAYING SAID RESIDUE DOWNWARDLY INTO A VERTICALLY ELONGATED COKING ZONE, INTRODUCING INTO A LOWER PORTION OF SAID ZONE A HOT REDUCING GAS, PASSING ALL OF SAID HOT REDUCING GAS UPWARDLY THROUGH THE ENTIRE LENGTH OF SAID COKING ZONE IN COUNTERCURRENT CONTACT WITH THE DESCENDING RESIDUE THEREBY DIRECTLY HEATING THE SAID RESIDUE DURING ITS ENTIRE PASSAGE THROUGH SAID ZONE WHILE MAINTAINING AN EXTERNAL PORTION OF SAID ZONE AT A CONSTANT TEMPERATURE BY INDIRECT HEAT EXCHANGE, REMOVING THE RESULTING COKE FROM A LOWER PORTION OF SAID ZONE AS A PRODUCT OF THE PROCESS, AND REMOVING THE RESULTING GAS FROM AN UPPER PORTION OF SAID ZONE AS A PRODUCT OF THE PROCESS.
Claim 2
Dependent Claim
117 words
A PROCESS FOR COKING PETROLEUM RESIDUE WHICH COMPRISES SPRAYING SAID RESIDUE DOWNWARDLY INTO A VERTICALLY ELONGATED COKING ZONE, INTRODUCING INTO A LOWER PORTION OF SAID ZONE A HOT REDUCING GAS, PASSING ALL OF SAID HOT REDUCING GAS UPWARDLY THROUGH THE ENTIRE LENGTH OF SAID COKING ZONE IN COUNTERCURRENT CONTACT WITH THE DESCENDING RESIDUE THEREBY DIRECTLY HEATING THE SAID RESIDUE DURING ITS ENTIRE PASSAGE THROUGH SAID ZONE WHILE MAINTAINING AN EXTERNAL PORTION OF SAID ZONE AT A CONSTANT TEMPERATURE BY INDIRECT HEAT EXCHANGE, REMOVING THE RESULTING COKE FROM A LOWER PORTION OF SAID ZONE AS A PRODUCT OF THE PROCESS, AND REMOVING THE RESULTING GAS FROM AN UPPER PORTION OF SAID ZONE AS A PRODUCT OF THE PROCESS.
References Cited (Backward Citations)
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US2179829A
Cited
US2366057A
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Cited
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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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |