US2576841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent fractionation
Assignee: JBS USA LLC
•
Filing: 1946-01-17
•
Granted: 1951-11-27
•
Expires: 1966-01-17
Abstract
No abstract record available.
Inventors
- 👤 William M Leaders
- 👤 Felix E Lacey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:12
CPC Classifications
C; C11; C11B; C11B7/00; C11B7/0008; C11B7/0016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PROCESS FOR THE TREATMENT OF FATTY MATERIALS CONTAINING RELATIVELY SATURATED AND UNSATURATED CONSTITUENTS TO OBTAIN AN IMPROVED SEPARATION OF THE HIGHLY UNSATURATED CONSTITUENTS,, WHICH COMPRISES: FIRST COOLING A SOLUTION OF THE FATTY MATERIAL IN A LIQUEFIED NORMALLY GASEOUS HYDROCARBON AS A SOLVENT TO A TEMPERATURE OF BETWEEN +30* AND -70* F. BY EVAPORATION OF A PORTION OF THE SOLVENT TO CRYSTALLIZE BETWEEN 10 AND 60 PERCENT OF THE MORE SATURATED CONSTITUENTS FROM THE SOLUTION; THEN FILTERING THE CRYSTALS FROM THE SOLUTION; THEN WARMING THE SOLUTION FREE OF THE MORE SATURATED CONSTITUENTS IN THE PRESENCE OF ADDITIONAL NORMALLY GASEOUS HYDROCARBON AS SOLVENT TO AN ELEVATED TEMPERATURE AND PRESSURE TO FORM TWO LIQUID PHASES, SEPARATING THE PHASES AND RECOVERING FROM THE SEPARATED PHASES CONSTITUENTS OF THE FATTY MATERIAL HAVING A HIGHER AND LOWER IODINE VALUE RESPECTIVELY.
Claim 2
Dependent Claim
135 words
A PROCESS FOR THE TREATMENT OF FATTY MATERIALS CONTAINING RELATIVELY SATURATED AND UNSATURATED CONSTITUENTS TO OBTAIN AN IMPROVED SEPARATION OF THE HIGHLY UNSATURATED CONSTITUENTS,, WHICH COMPRISES: FIRST COOLING A SOLUTION OF THE FATTY MATERIAL IN A LIQUEFIED NORMALLY GASEOUS HYDROCARBON AS A SOLVENT TO A TEMPERATURE OF BETWEEN +30* AND -70* F. BY EVAPORATION OF A PORTION OF THE SOLVENT TO CRYSTALLIZE BETWEEN 10 AND 60 PERCENT OF THE MORE SATURATED CONSTITUENTS FROM THE SOLUTION; THEN FILTERING THE CRYSTALS FROM THE SOLUTION; THEN WARMING THE SOLUTION FREE OF THE MORE SATURATED CONSTITUENTS IN THE PRESENCE OF ADDITIONAL NORMALLY GASEOUS HYDROCARBON AS SOLVENT TO AN ELEVATED TEMPERATURE AND PRESSURE TO FORM TWO LIQUID PHASES, SEPARATING THE PHASES AND RECOVERING FROM THE SEPARATED PHASES CONSTITUENTS OF THE FATTY MATERIAL HAVING A HIGHER AND LOWER IODINE VALUE RESPECTIVELY.
References Cited (Backward Citations)
GB402651A
Cited
US2113960A
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US2118454A
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US2285795A
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US2352883A
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US2290609A
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US2320238A
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US2360860A
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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) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |