US2921017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing desulfurized coke from petroleum
Assignee: ExxonMobil Oil Corp
•
Filing: 1957-02-13
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Granted: 1960-01-12
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Expires: 1977-02-13
Abstract
No abstract record available.
Inventors
- 👤 George C Johnson
- 👤 Sigmund J Lukasiewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:03
CPC Classifications
C; C10; C10L; C10L9/00; C10L9/02; C10B; C10B55/00; C10L9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
THE METHOD OF PRODUCING A LOW SULFUR PETROLEUM COKE FROM A HIGH SULFUR PETROLEUM RESIDUUM WHICH COMPRISES THE STEPS OF MIXING WITH THE RESIDUUM A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM CARBONATE, SODIUM BICARBONATE, SODIUM SESQUICARBONATE, SODIUM CARBONATE MONOHYDRATE, SODIUM CARBONATE HEPTAHYDRATE, SODIUM CARBONATE DECAHYDRATE AND SODIUM HYDROXIDE AND SUBJECTING THE MIXTURE TO HIGH TEMPERATURE COKING CONDITIONS TO PRODUCE A PETROLEUM COKE, WASHING THE COKE FORMED TO EFFECT REMOVAL OF SULFUR SALTS, WHEREBY A PETROLEUM COKE IS PRODUCED HAVING A SUBSTANTIALLY REDUCED SULFUR CONTENT FROM THAT OF THE RESIDUUM FROM WHICH IT IS FORMED.
Claim 2
Independent Claim
96 words
THE METHOD OF PRODUCING A LOW SULFUR PETROLEUM COKE FROM A HIGH SULFUR PETROLEUM RESIDUUM WHICH COMPRISES THE STEPS OF MIXING WITH THE RESIDUUM A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM CARBONATE, SODIUM BICARBONATE, SODIUM SESQUICARBONATE, SODIUM CARBONATE MONOHYDRATE, SODIUM CARBONATE HEPTAHYDRATE, SODIUM CARBONATE DECAHYDRATE AND SODIUM HYDROXIDE AND SUBJECTING THE MIXTURE TO HIGH TEMPERATURE COKING CONDITIONS TO PRODUCE A PETROLEUM COKE, WASHING THE COKE FORMED TO EFFECT REMOVAL OF SULFUR SALTS, WHEREBY A PETROLEUM COKE IS PRODUCED HAVING A SUBSTANTIALLY REDUCED SULFUR CONTENT FROM THAT OF THE RESIDUUM FROM WHICH IT IS FORMED.
References Cited (Backward Citations)
US2768939A
Cited
US2814588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |