Patent US3934067A successfully refreshed from Google Patents.
Patent US2610108A successfully refreshed from Google Patents.
US2610108A
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US
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Liquid-liquid extraction tower
Assignee: Standard Oil Development Co
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Filing: 1949-01-26
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Granted: 1952-09-09
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Expires: 1969-01-26
Abstract
No abstract record available.
Inventors
- 👤 John W Packie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:45
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/043; B01D11/0484
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
AN IMPROVED LIQUID-LIQUID EXTRACTION TOWER COMPRISING A VERTICAL TREATING TOWER HAVING A PLURALITY OF HORIZONTALLY DISPOSED PLATES EXTENDING THROUGHOUT THE TOWER, EACH OF SAID PLATES CONSISTING OF TWO STEPS EXTENDING COMPLETELY ACROSS THE TOWER AND HAVING AT LEAST A PORTION OF EACH OF THE STEPS PERFORATED AND EACH OF SAID PLATES BEING IN REVERSED RELATIONSHIP WITH SUCCESSIVE PLATES, IN THE TOWER WHEREBY THE LOWER STEP OF ONE PLATE IS ADJACENT THE UPPER STEP OF A SUCCESSIVE PLATE, SAID PERFORATIONS OF SUCCESSIVE PLATES BEING POSITIONED SO AS TO BE SUBSTANTIALLY IN VERTICAL ALIGNMENT, A LIGHT PHASE LIQUID FEED SUBSTANTIALLY AT THE BOTTOM OF THE TOWER, A HEAVY PHASE WITHDRAWAL AT THE BOTTOM OF THE TOWER AND A LIGHT PHASE WITHDRAWAL AT THE TOP OF THE TOWER ASSOCIATED WITH A PRESSURE RESPONSIVE FLOW CONTROL MEANS AND A HEAVY PHASE FEED SUBSTANTIALLY AT THE TOP OF THE TOWER ASSOCIATED WITH A LEVEL CONTROLLED FLOW CONTROL MEANS POSITIONED SUBSTANTIALLY AT THE TOP OF THE SAID TOWER.
Claim 2
Dependent Claim
162 words
AN IMPROVED LIQUID-LIQUID EXTRACTION TOWER COMPRISING A VERTICAL TREATING TOWER HAVING A PLURALITY OF HORIZONTALLY DISPOSED PLATES EXTENDING THROUGHOUT THE TOWER, EACH OF SAID PLATES CONSISTING OF TWO STEPS EXTENDING COMPLETELY ACROSS THE TOWER AND HAVING AT LEAST A PORTION OF EACH OF THE STEPS PERFORATED AND EACH OF SAID PLATES BEING IN REVERSED RELATIONSHIP WITH SUCCESSIVE PLATES, IN THE TOWER WHEREBY THE LOWER STEP OF ONE PLATE IS ADJACENT THE UPPER STEP OF A SUCCESSIVE PLATE, SAID PERFORATIONS OF SUCCESSIVE PLATES BEING POSITIONED SO AS TO BE SUBSTANTIALLY IN VERTICAL ALIGNMENT, A LIGHT PHASE LIQUID FEED SUBSTANTIALLY AT THE BOTTOM OF THE TOWER, A HEAVY PHASE WITHDRAWAL AT THE BOTTOM OF THE TOWER AND A LIGHT PHASE WITHDRAWAL AT THE TOP OF THE TOWER ASSOCIATED WITH A PRESSURE RESPONSIVE FLOW CONTROL MEANS AND A HEAVY PHASE FEED SUBSTANTIALLY AT THE TOP OF THE TOWER ASSOCIATED WITH A LEVEL CONTROLLED FLOW CONTROL MEANS POSITIONED SUBSTANTIALLY AT THE TOP OF THE SAID TOWER.
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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) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |