US2528426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent extraction apparatus
Assignee: Lummus Technology LLC
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Filing: 1949-03-07
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Granted: 1950-10-31
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Expires: 1969-03-07
Abstract
No abstract record available.
Inventors
- 👤 Hyman R Davis
- 👤 Kraus Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:33
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
SOLVENT EXTRACTION APPARATUS COMPRISING A SETTLING CHAMBER HAVING SPACED SUPERPOSED UPPER AND LOWER WALLS AND AN INLET AND AN OUTLET LOCATED AT OPPOSITE SIDES OF THE CHAMBER TO PASS A MIXTURE OF A LIQUID CHARGE AND A LIQUID SOLVENT ALONG A SUBSTANTIALLY HORIZONTAL COURSE THROUGH THE CHAMBER BETWEEN SAID WALLS, A PARTITION MOUNTED WITHIN THE CHAMBER AT AN INTERMEDIATE LEVEL BETWEEN SAID WALLS TO SPLIT THE MIXTURE WITHIN SAID COURSE INTO SUPERPOSED CONCURRENT STREAMS, SAID LOWER WALL AND SAID PARTITION FORMING COLLECTING SURFACES FOR A HEAVY LIQUID PHASE SETTLED FROM SAID STREAMS RESPECTIVELY, CONDUIT MEANS EXTENDING DOWNWARDLY FROM THE PATITION TO DRAIN A HEAVY SEPARATED LIQUID PHASE COLLECTED THEREON TO SAID LOWER WALL, CONDUIT MEANS EXTENDING UPWARDLY FROM THE PARTITION TO CONDUCT A LIGHTER SEPARATED LIQUID PHASE FROM BENEATH THE PARTITION TO A LEVEL ABOVE THE PARTITION, SAID TWO CONDUIT MEANS BEING AT THE PORTION OF THE PARTITION ADJACENT SAID CHAMBER OUTLET, AND BAFFLE MEANS AT THE END OF THE PARTITION ADJACENT SAID OUTLET AND EXTENDING
Claim 2
Dependent Claim
166 words
SOLVENT EXTRACTION APPARATUS COMPRISING A SETTLING CHAMBER HAVING SPACED SUPERPOSED UPPER AND LOWER WALLS AND AN INLET AND AN OUTLET LOCATED AT OPPOSITE SIDES OF THE CHAMBER TO PASS A MIXTURE OF A LIQUID CHARGE AND A LIQUID SOLVENT ALONG A SUBSTANTIALLY HORIZONTAL COURSE THROUGH THE CHAMBER BETWEEN SAID WALLS, A PARTITION MOUNTED WITHIN THE CHAMBER AT AN INTERMEDIATE LEVEL BETWEEN SAID WALLS TO SPLIT THE MIXTURE WITHIN SAID COURSE INTO SUPERPOSED CONCURRENT STREAMS, SAID LOWER WALL AND SAID PARTITION FORMING COLLECTING SURFACES FOR A HEAVY LIQUID PHASE SETTLED FROM SAID STREAMS RESPECTIVELY, CONDUIT MEANS EXTENDING DOWNWARDLY FROM THE PATITION TO DRAIN A HEAVY SEPARATED LIQUID PHASE COLLECTED THEREON TO SAID LOWER WALL, CONDUIT MEANS EXTENDING UPWARDLY FROM THE PARTITION TO CONDUCT A LIGHTER SEPARATED LIQUID PHASE FROM BENEATH THE PARTITION TO A LEVEL ABOVE THE PARTITION, SAID TWO CONDUIT MEANS BEING AT THE PORTION OF THE PARTITION ADJACENT SAID CHAMBER OUTLET, AND BAFFLE MEANS AT THE END OF THE PARTITION ADJACENT SAID OUTLET AND EXTENDING
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) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |