US2948675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing heavy metals from petroleum with an oil-insoluble sulfonic acid
Assignee: Sinclair Refining Co
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Filing: 1958-12-29
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Granted: 1960-08-09
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Expires: 1978-12-29
Abstract
No abstract record available.
Inventors
- 👤 Everett N Case
- 👤 Koncos Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:35
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN A PROCESS FOR DEMETALLIZING A HEAVY METAL CONTAINING HEAVY HYDROCARBON, THE STEPS COMPRISING CONTACTING SID HYDROCARBON WITH A LIQUID, OIL-INSOLUBLE AROMATIC SULFONIC ACID AT A TEMPERATURE OF UP TO ABOUT 150* F. IN AN AMOUNT SUFFICIENT TO REDUCE THE HEAVY METALS CONTENT OF SAID HYDROCARBON AND SEPARATING A HYDROCARBON PHASE REDUCED IN HEAVY METAL CONTENT FROM A SULFONIC ACID PHASE.
Claim 2
Dependent Claim
61 words
IN A PROCESS FOR DEMETALLIZING A HEAVY METAL CONTAINING HEAVY HYDROCARBON, THE STEPS COMPRISING CONTACTING SID HYDROCARBON WITH A LIQUID, OIL-INSOLUBLE AROMATIC SULFONIC ACID AT A TEMPERATURE OF UP TO ABOUT 150* F. IN AN AMOUNT SUFFICIENT TO REDUCE THE HEAVY METALS CONTENT OF SAID HYDROCARBON AND SEPARATING A HYDROCARBON PHASE REDUCED IN HEAVY METAL CONTENT FROM A SULFONIC ACID PHASE.
References Cited (Backward Citations)
US2157315A
Cited
US2556269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |