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Patent US2495851A successfully refreshed from Google Patents.
US2495851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurization of organic substances
Assignee: Standard Oil Co
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Filing: 1946-12-27
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Granted: 1950-01-31
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Expires: 1966-12-27
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Lien
- 👤 Bernard L Evering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:05
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF DESULFURIZING A SULFUR-BEARING HYDROCARBON MATERIAL COMPRISING EXTRACTING SAID HYDROCARBON MATERIAL AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 50*F. TO ABOUT 150*F. WITH A SOLVENT COMPRISING ESSENTIALLY A COMPLEX OF BORON FLUORIDE WITH AN OXYGENATED ALKANE COMPOUND HAVING NOT MORE THAN ABOUT 5 CARBON ATOMS IN THE ALKYL GROUP AND AN EXCESS OF BORON FLUORIDE SAID SOLVENT BEING USED IN AN AMOUNT SUFFICIENT TO GIVE A DIPHASIC SEPARATION.
Claim 2
Independent Claim
72 words
THE METHOD OF DESULFURIZING A SULFUR-BEARING HYDROCARBON MATERIAL COMPRISING EXTRACTING SAID HYDROCARBON MATERIAL AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 50*F. TO ABOUT 150*F. WITH A SOLVENT COMPRISING ESSENTIALLY A COMPLEX OF BORON FLUORIDE WITH AN OXYGENATED ALKANE COMPOUND HAVING NOT MORE THAN ABOUT 5 CARBON ATOMS IN THE ALKYL GROUP AND AN EXCESS OF BORON FLUORIDE SAID SOLVENT BEING USED IN AN AMOUNT SUFFICIENT TO GIVE A DIPHASIC SEPARATION.
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) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |