US2562783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Countercurrent extraction tower
Assignee: Standard Oil Development Co
•
Filing: 1947-11-21
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Granted: 1951-07-31
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Expires: 1967-11-21
Abstract
No abstract record available.
Inventors
- 👤 Gallo S George
- 👤 Harman V Hartvigsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:20
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/043; B01D11/0434
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
APPARATUS FOR THE CONTINUOUS COUNTER-CURRENT CONTACTING OF ONE LIQUID WITH ANOTHER WHICH COMPRISES A VERTICAL TOWER, RAIDALLY DISPOSED VERTICALLY POSITIONED PERFORATE MEANS WITHIN SAID TOWER ADAPTED TO DISPESE LIQUIDS FORCED THERETHROUGH MEANS FOR INJECTING A LIGHT LIQUID AT THE BOTTOM OF THE TOWER, MEANS FOR INJECTING A HEAVIER LIQUID AT THE TOP OF THE TOWER, AND MEANS FOR IMPARTING A ROTATIONAL MOVEMENT TO THE SAID LIGHT AND HEAVY LIQUIDS CONTAINED WITHIN THE TOWER, WHEREBY THE SAID HEAVY LIQUID WILL BE CAUSE TO MOVE HELICALLY DOWNWARDLY THROUGH THE TOWER AND THE SAID LIGHT LIQUID WILL BE CAUSED TO MOVE HELICALLY UPWARDLY THROUGH THE TOWER IN A PATH CARRYING THE SAID LIQUIDS REPEATEDLY THROUGH THE SAID PERFORATE MEANS AND MEANS AT THE TOP AND BOTTOM OF THE TOWER FOR RESPECTIVELY WITHDRAWING THE LIGHT AND HEAVY LIQUIDS.
Claim 2
Dependent Claim
134 words
APPARATUS FOR THE CONTINUOUS COUNTER-CURRENT CONTACTING OF ONE LIQUID WITH ANOTHER WHICH COMPRISES A VERTICAL TOWER, RAIDALLY DISPOSED VERTICALLY POSITIONED PERFORATE MEANS WITHIN SAID TOWER ADAPTED TO DISPESE LIQUIDS FORCED THERETHROUGH MEANS FOR INJECTING A LIGHT LIQUID AT THE BOTTOM OF THE TOWER, MEANS FOR INJECTING A HEAVIER LIQUID AT THE TOP OF THE TOWER, AND MEANS FOR IMPARTING A ROTATIONAL MOVEMENT TO THE SAID LIGHT AND HEAVY LIQUIDS CONTAINED WITHIN THE TOWER, WHEREBY THE SAID HEAVY LIQUID WILL BE CAUSE TO MOVE HELICALLY DOWNWARDLY THROUGH THE TOWER AND THE SAID LIGHT LIQUID WILL BE CAUSED TO MOVE HELICALLY UPWARDLY THROUGH THE TOWER IN A PATH CARRYING THE SAID LIQUIDS REPEATEDLY THROUGH THE SAID PERFORATE MEANS AND MEANS AT THE TOP AND BOTTOM OF THE TOWER FOR RESPECTIVELY WITHDRAWING THE LIGHT AND HEAVY LIQUIDS.
References Cited (Backward Citations)
US1934023A
Cited
US1993446A
Cited
US2072382A
Cited
US2286503A
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US2266521A
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US2205986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |