US2574122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweetening process
Assignee: Standard Oil Development Co
•
Filing: 1949-03-11
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Granted: 1951-11-06
•
Expires: 1969-03-11
Abstract
No abstract record available.
Inventors
- 👤 James W Ryder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:53
CPC Classifications
C; C10; C10G; C10G19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
PROCESS FOR THE REMOVAL OF MERCAPTAN COMPOUNDS FROM A PETROLEUM OIL WHICH BOILS IN THE RANGE FROM ABOUT 80* F. TO ABOUT 420* F., WHICH COMPRISES TREATING SAID PETROLEUM OIL WITH A CAUSTIC SOLUTION CONTAINING THEREIN AN ALKYL PHENOLATE WHICH BOILS ABOVE ABOUT 420* F. AND AN AROMATIC MERCAPTIDE, SAID ALKYL PHENOLATE HAVING BEEN DERIVED FROM THE ACIDIFICATION OF THE CAUSTIC EXTRACT OF A THERMALLY CRACKED STOCK BOILING IN THE RANGE OF ABOUT 420* TO 700* F., AND SAID AROMATIC MERCAPTIDE HAVING BEEN DERIVED FROM THE CAUSTIC EXTRACT OF A CATALYTICALLY CRACKED HYDROCARBON FRACTION.
Claim 2
Dependent Claim
94 words
PROCESS FOR THE REMOVAL OF MERCAPTAN COMPOUNDS FROM A PETROLEUM OIL WHICH BOILS IN THE RANGE FROM ABOUT 80* F. TO ABOUT 420* F., WHICH COMPRISES TREATING SAID PETROLEUM OIL WITH A CAUSTIC SOLUTION CONTAINING THEREIN AN ALKYL PHENOLATE WHICH BOILS ABOVE ABOUT 420* F. AND AN AROMATIC MERCAPTIDE, SAID ALKYL PHENOLATE HAVING BEEN DERIVED FROM THE ACIDIFICATION OF THE CAUSTIC EXTRACT OF A THERMALLY CRACKED STOCK BOILING IN THE RANGE OF ABOUT 420* TO 700* F., AND SAID AROMATIC MERCAPTIDE HAVING BEEN DERIVED FROM THE CAUSTIC EXTRACT OF A CATALYTICALLY CRACKED HYDROCARBON FRACTION.
References Cited (Backward Citations)
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US2364582A
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US2394662A
Cited
US2457975A
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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) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |