US2642341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-liquid extraction tower
Assignee: Standard Oil Development Co
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Filing: 1950-08-10
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Granted: 1953-06-16
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Expires: 1970-08-10
Abstract
No abstract record available.
Inventors
- 👤 John M Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:24
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A LIQUID-LIQUID CONTACTING TOWER, CONTACTING MEANS COMPRISING A PLURALITY OF VERTICALLY DISPLACED PLATE MEMBERS, EACH OF SAID PLATE MEMBERS COMPRISING A FIRST IMPERFORATE PLATE ELEMENT FIXED TO THE SAID TOWER, A SECOND PERFORATED PLATE ELEMENT FIXED TO SAID FIRST PLATE ELEMENT IN UPWARDLY INCLINED RELATION, AND A THIRD IMPERFORATE PLATE ELEMENT JOINED TO SAID SECOND PLATE ELEMENT EXTENDING ACROSS THE TOWER IN SPACED RELATION TO THE OPPOSITE SIDE OF THE TOWER, EACH PLATE MEMBER BEING ROTATED 180* WITH RESPECT TO THE NEXT LOWER PLATE MEMBER WHEREBY EACH SUCCESSIVE PLATE MEMBER IS FIXED TO ALTERNATE SIDES OF SAID TOWER.
Claim 2
Dependent Claim
99 words
IN A LIQUID-LIQUID CONTACTING TOWER, CONTACTING MEANS COMPRISING A PLURALITY OF VERTICALLY DISPLACED PLATE MEMBERS, EACH OF SAID PLATE MEMBERS COMPRISING A FIRST IMPERFORATE PLATE ELEMENT FIXED TO THE SAID TOWER, A SECOND PERFORATED PLATE ELEMENT FIXED TO SAID FIRST PLATE ELEMENT IN UPWARDLY INCLINED RELATION, AND A THIRD IMPERFORATE PLATE ELEMENT JOINED TO SAID SECOND PLATE ELEMENT EXTENDING ACROSS THE TOWER IN SPACED RELATION TO THE OPPOSITE SIDE OF THE TOWER, EACH PLATE MEMBER BEING ROTATED 180* WITH RESPECT TO THE NEXT LOWER PLATE MEMBER WHEREBY EACH SUCCESSIVE PLATE MEMBER IS FIXED TO ALTERNATE SIDES OF SAID TOWER.
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) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |