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Patent US2552797A successfully refreshed from Google Patents.
US2552797A
Expired / Lapsed
US
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Solvent fractionation of fatty materials
Assignee: JBS USA LLC
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Filing: 1945-06-25
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Granted: 1951-05-15
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Expires: 1965-06-25
Abstract
No abstract record available.
Inventors
- 👤 Felix E Lacey
- 👤 William M Leaders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:13
CPC Classifications
C; C11; C11B; C11B7/00; C11B7/0008; C11B7/005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
A PROCESS FOR REFINING AND FRACTIONATING FATTY MATERIALS WHICH COMPRISES SUBJECTING A SOLUTION OF THE FATTY MATERIAL IN A NORMALLY GASEOUS HYDROCARBON SOLVENT TO TEMPERATURE AND PRESSURE CONDITIONS TO CAUSE A SEPARATION OF A HEAVIER LIQUID PHASE CONTAINING IMPURITIES AND A LIGHTER LIQUID PHASE CONTAINING DECOLORIZED FATTY MATERIAL, SEPARATING SAID PHASES, REDUCING THE PRESSURE TO VAPORIZE A PORTION OF SAID HYDROCARBON FROM THE LIGHTER LIQUID PHASE WHILE SUPPLYING HEAT TO AVOID COOLING BELOW ABOUT 100* F., CHILLING THE DECOLORIZED FATTY MATERIAL BY VAPORIZING A FURTHER QUANTITY OF THE NORMALLY GASEOUS HYDROCARBON TO A TEMPERATRE SUFFICIENTLY LOW TO CRYSTALLIZE THE HIGHER MELTING CONSITUENTS OF SAID FATTY MATERIAL AND THEN FILTERING THE MIXTURE TO SEPARATE SAID HIGHER MELTING POINT CONSISTUENTS.
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) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |