Patent US2644825A successfully refreshed from Google Patents.
US2644825A
Expired / Lapsed
US
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Method of sulfurizing fats and fatty acids
Assignee: Standard Oil Co
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Filing: 1949-08-05
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Granted: 1953-07-07
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Expires: 1969-08-05
Abstract
No abstract record available.
Inventors
- 👤 Beretvas Helen Sellei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:20
CPC Classifications
C; C11; C11C; C11C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE METHOD COMPRISING REACTING AN UNSATURATED ALIPHATIC COMPOUND HAVING AT LEAST EIGHT CARBON ATOMS AND AT LEAST ONE DOUBLE BOND SELECTED FROM THE GROUP CONSISTING OF A FAT, FATTY ACID AND MIXTURES THEREOF, WITH A SULFUR CHLORIDE IN THE PRESENCE OF FROM ABOUT 5% TO ABOUT 50% BY VOLUME OF WATER AT A TEMPERATURE OF FROM ABOUT 40* F. TO ABOUT 250* F. IN THE ABSENCE OF ADDED HYDROGEN SULFIDE.
Claim 2
Independent Claim
70 words
THE METHOD COMPRISING REACTING AN UNSATURATED ALIPHATIC COMPOUND HAVING AT LEAST EIGHT CARBON ATOMS AND AT LEAST ONE DOUBLE BOND SELECTED FROM THE GROUP CONSISTING OF A FAT, FATTY ACID AND MIXTURES THEREOF, WITH A SULFUR CHLORIDE IN THE PRESENCE OF FROM ABOUT 5% TO ABOUT 50% BY VOLUME OF WATER AT A TEMPERATURE OF FROM ABOUT 40* F. TO ABOUT 250* F. IN THE ABSENCE OF ADDED HYDROGEN SULFIDE.
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) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |