US2952629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decolorizing petroleum with aromatic sulfonic acids
Assignee: Sunoco Inc
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Filing: 1957-05-27
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Granted: 1960-09-13
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Expires: 1977-05-27
Abstract
No abstract record available.
Inventors
- 👤 Schneider Abraham
- 👤 James L Jezl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:55
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
74 words
PROCESS FOR REFINING PETROLEUM WHICH COMPRISES: CONTACTING UNSULFONATED PETROLEUM IN LIQUID PHASE WITH AN AROMATIC SULFONIC ACID, THEREBY TO EXTRACT COLOR BODIES FROM THE PETROLEUM, SEPARATING THE SULFONIC ACID PHASE FROM LIQUID PETROLEUM, CONTACTING THE RESULTING SULFONIC ACID PHASE WITH AN ADDED HYDROCARBON SOLVENT FOR SAID COLOR BODIES, THEREBY TO EXTRACT THE COLOR BODIES FROM THE SULFONIC ACID, AND CONTACTING THE RESULTING SULFONIC ACID PHASE WITH ADDITINAL PETROLEUM, THEREBY TO EXTRACT COLOR BODIES THEREFROM.
Claim 2
Dependent Claim
74 words
PROCESS FOR REFINING PETROLEUM WHICH COMPRISES: CONTACTING UNSULFONATED PETROLEUM IN LIQUID PHASE WITH AN AROMATIC SULFONIC ACID, THEREBY TO EXTRACT COLOR BODIES FROM THE PETROLEUM, SEPARATING THE SULFONIC ACID PHASE FROM LIQUID PETROLEUM, CONTACTING THE RESULTING SULFONIC ACID PHASE WITH AN ADDED HYDROCARBON SOLVENT FOR SAID COLOR BODIES, THEREBY TO EXTRACT THE COLOR BODIES FROM THE SULFONIC ACID, AND CONTACTING THE RESULTING SULFONIC ACID PHASE WITH ADDITINAL PETROLEUM, THEREBY TO EXTRACT COLOR BODIES THEREFROM.
Claim 3
Dependent Claim
75 words
IN A PROCESS FOR PRODUCING OIL-SOLUBLE SULFONIC ACIDS AND REFINED PETROLEUM HYDROCARBON BY SULFONATING PETROLEUM OIL, SEPARATING OIL-INSOLUBLE SULFONIC ACID FROM THE SULFONATED OIL, AND EXTRACTING SOAPS OF OIL-SOLUBLE SULFONIC ACIDS FROM THE SULFONATED OIL BY MEANS OF AN AQUEOUS ALCOHOL SOLVENT, THE IMPROVEMENT WHICH COMPRISES: CONTACTING THE RESULTING OIL, FROM WHICH OIL-SOLUBLE SULFONIC ACIDS HAVE BEEN REMOVED, IN LIQUID PHASE WITH AN AROMATIC SULFONIC ACID, THEREBY TO EXTRACT RESIDUAL COLOR BODIES FROM THE OIL.
Claim 4
Dependent Claim
75 words
IN A PROCESS FOR PRODUCING OIL-SOLUBLE SULFONIC ACIDS AND REFINED PETROLEUM HYDROCARBON BY SULFONATING PETROLEUM OIL, SEPARATING OIL-INSOLUBLE SULFONIC ACID FROM THE SULFONATED OIL, AND EXTRACTING SOAPS OF OIL-SOLUBLE SULFONIC ACIDS FROM THE SULFONATED OIL BY MEANS OF AN AQUEOUS ALCOHOL SOLVENT, THE IMPROVEMENT WHICH COMPRISES: CONTACTING THE RESULTING OIL, FROM WHICH OIL-SOLUBLE SULFONIC ACIDS HAVE BEEN REMOVED, IN LIQUID PHASE WITH AN AROMATIC SULFONIC ACID, THEREBY TO EXTRACT RESIDUAL COLOR BODIES FROM THE OIL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |