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Patent US2605271A successfully refreshed from Google Patents.
US2605271A
Expired / Lapsed
US
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Solvent extraction of oil
Assignee: Sherwin Williams Co
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Filing: 1949-04-22
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Granted: 1952-07-29
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Expires: 1969-04-22
Abstract
No abstract record available.
Inventors
- 👤 James V Hunn
- 👤 Michael W Pascal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:43
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/10; C11B1/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A METHOD OF EXTRACTING OIL FROM OIL BEARING SEEDS COMPRISING CONTACTING A MEAL OF CRUSHED OIL BEARING SEEDS WITH AN AQUEOUS SOLUTION OF A HYDROPHILIC ORGANIC SOLVENT FOR OIL IN SUCH AMOUNT AS TO FORM A FLOWABLE SLURRY WITH THE MEAL, PASSING SAID SLURRY THROUGH AN EXTRACTION ZONE, PASSING AN ALIPHATIC ORGANIC SOLVENT FOR THE OIL THROUGH SAID ZONE COUNTER-CURRENTLY TO THE DIRECTION OF SAID SLURRY AND IN ADMIXTURE THEREWITH, SAID AQUEOUS SOLUTION CONTAINING SUFFICIENT WATER TO RENDER SAID SOLUTION SUBSTANTIALLY IMMISCIBLE WITH THE ALIPHATIC SOLVENT AND INSUFFICIENT WATER TO CAUSE COMPLETE INSOLUBILITY OF THE OIL IN THE AQUEOUS SOLUTION, AGITATING THE MIXTURE IN SAID EXTRACTION ZONE WHEREBY THE OIL IN SAID MEAL IS TAKEN UP BY SAID ALIPHATIC SOLVENT TO FORM A MISCELLA WHILE SAID SUBSTANTIALLY OIL FREE MEAL REMAINS IN SAID SLURRY WITH SAID AQUEOUS SOLUTION, PROGRESSIVELY SEPARATING THE MIXTURE INTO TWO PHASES, ONE BEING THE MISCELLA AND THE OTHER THE SUBSTANTIALLY OIL-FREE SLURRY, AND SEPARATELY WITHDRAWING THE MISCELLA AND SAID SUBSTANTIALLY OIL-FREE SLURRY FROM SAID EXTRACTION ZONE.
Claim 2
Independent Claim
170 words
A METHOD OF EXTRACTING OIL FROM OIL BEARING SEEDS COMPRISING CONTACTING A MEAL OF CRUSHED OIL BEARING SEEDS WITH AN AQUEOUS SOLUTION OF A HYDROPHILIC ORGANIC SOLVENT FOR OIL IN SUCH AMOUNT AS TO FORM A FLOWABLE SLURRY WITH THE MEAL, PASSING SAID SLURRY THROUGH AN EXTRACTION ZONE, PASSING AN ALIPHATIC ORGANIC SOLVENT FOR THE OIL THROUGH SAID ZONE COUNTER-CURRENTLY TO THE DIRECTION OF SAID SLURRY AND IN ADMIXTURE THEREWITH, SAID AQUEOUS SOLUTION CONTAINING SUFFICIENT WATER TO RENDER SAID SOLUTION SUBSTANTIALLY IMMISCIBLE WITH THE ALIPHATIC SOLVENT AND INSUFFICIENT WATER TO CAUSE COMPLETE INSOLUBILITY OF THE OIL IN THE AQUEOUS SOLUTION, AGITATING THE MIXTURE IN SAID EXTRACTION ZONE WHEREBY THE OIL IN SAID MEAL IS TAKEN UP BY SAID ALIPHATIC SOLVENT TO FORM A MISCELLA WHILE SAID SUBSTANTIALLY OIL FREE MEAL REMAINS IN SAID SLURRY WITH SAID AQUEOUS SOLUTION, PROGRESSIVELY SEPARATING THE MIXTURE INTO TWO PHASES, ONE BEING THE MISCELLA AND THE OTHER THE SUBSTANTIALLY OIL-FREE SLURRY, AND SEPARATELY WITHDRAWING THE MISCELLA AND SAID SUBSTANTIALLY OIL-FREE SLURRY FROM SAID EXTRACTION ZONE.
References Cited (Backward Citations)
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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) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |