Patent US2754252A successfully refreshed from Google Patents.
US2754252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refining hydrocarbon oils with bf3 and perfluoroalkanoic acid
Assignee: Standard Oil Co
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Filing: 1953-01-29
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Granted: 1956-07-10
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Expires: 1973-01-29
Abstract
No abstract record available.
Inventors
- 👤 Sam B Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:26
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/07; C10G29/00; C10G29/06; C10G29/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF REFINING A SULFUR-CONTAINING HYDROCARBON OIL AND SIMULTANEOUSLY IMPROVING THE ODOR AND COLOR OF SAID OIL, WHICH METHOD COMPRISES CONTACTING A SUBSTANTIALLY DRY SULFUR-CONTAINING OIL WITH ABOUT 10 TO 300 VOLUME PER CENT BASED ON OIL OF A PERFLUOROALKANOIC ACID HAVING AT LEAST 2 BUT NOT MORE THAN 5 CARBON ATOMS PER MOLECULE IN THE PRESENCE OF ABOUT .1 TO 6 MOLS OF BF3 PER GRAM ATOM OF SULFUR PRESENT IN THE OIL AT A TEMPERATURE IN THE RANGE OF -50* C. TO THE MISCIBILITY TEMPERATURE OF THE MIXTURE TO EFFECT SUBSTANTIAL DESULFURIZATION OF SAID
Claim 2
Independent Claim
97 words
THE METHOD OF REFINING A SULFUR-CONTAINING HYDROCARBON OIL AND SIMULTANEOUSLY IMPROVING THE ODOR AND COLOR OF SAID OIL, WHICH METHOD COMPRISES CONTACTING A SUBSTANTIALLY DRY SULFUR-CONTAINING OIL WITH ABOUT 10 TO 300 VOLUME PER CENT BASED ON OIL OF A PERFLUOROALKANOIC ACID HAVING AT LEAST 2 BUT NOT MORE THAN 5 CARBON ATOMS PER MOLECULE IN THE PRESENCE OF ABOUT .1 TO 6 MOLS OF BF3 PER GRAM ATOM OF SULFUR PRESENT IN THE OIL AT A TEMPERATURE IN THE RANGE OF -50* C. TO THE MISCIBILITY TEMPERATURE OF THE MIXTURE TO EFFECT SUBSTANTIAL DESULFURIZATION OF SAID
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) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |