Patent US3220802A successfully refreshed from Google Patents.
US3220802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of solutes by liquid-liquid extraction
Assignee: Fisons Pest Control Ltd
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Filing: 1960-10-05
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Granted: 1965-11-30
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Expires: 1980-10-05
Abstract
No abstract record available.
Inventors
- 👤 Gilbert S Hartley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:18
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/84; G01N25/00; G01N25/14; G01N2030/009; G01N30/50; G01N30/52; G01N30/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
AN APPARATUS COMPRISING AN OSCILLATING MEANS, TWO ZONES EACH HAVING MEANS FOR MAINTAINING THE RESPECTIVE ZONE AT A TEMPERATURE DIFFERENT FROM THE TEMPERATURE OF THE OTHER ZONE AND A NUMBER OF SUBSTANTIALLY HORIZONTALLY DISPOSED MIXING VESSELS, EACH VESSEL BEING PROVIDED WITH A SUBSTANTIALLY VERTIALLY DISPOSED INLET TUBE AND A SUB STANTIALLY VERTICALLY DISPOSED OUTLET TUBE, EACH OF SAID OUTLET TUBES EXTENDING FROM ITS RESPECTIVE MIXING VESSEL IN SUBSTANTIALL THE SAME DIRECTION AND EACH OF SIAD VESSELS CONTAINING AT LEAST ONE LOOSE MAGNETIZABLE BODY, CONNECTIONS BETWEEN THE VESSELS CONSISTING OF THE OUTLET TUBE FROM ONE VESSEL BEING CONNECTED TO THE INLET TUBE OF THE NEXT VESSEL, SAID OUTLET TUBE HAVING A GREATER CROSS-SECTIONAL AREA THAN SAID INLET TUBE, THE MIXING VESSELS BEING ENCLOSED IN ONE OF THE ZONES AND OUTLET TUBES BEING ENCLOSED IN THE OTHER ZONE AND SAID OSCILLATING MEANS COMPRISING A SERIES OF FIXED ELECTROMAGNETS, MEANS COUPLED TO SAID ELECTROMAGNETS FOR PERIODICALLY MAGNETIZING THEM, AND SAID ELECTROMAGNETS BEING EXTERNAL TO BUT IN CLOSE PROXIMITY TO THE MIXING VESSEL TO MOVE EACH OF THE LOOSE MAGNETIZABLE BODIES IN THE MIXING VESSELS.
Claim 2
Independent Claim
181 words
AN APPARATUS COMPRISING AN OSCILLATING MEANS, TWO ZONES EACH HAVING MEANS FOR MAINTAINING THE RESPECTIVE ZONE AT A TEMPERATURE DIFFERENT FROM THE TEMPERATURE OF THE OTHER ZONE AND A NUMBER OF SUBSTANTIALLY HORIZONTALLY DISPOSED MIXING VESSELS, EACH VESSEL BEING PROVIDED WITH A SUBSTANTIALLY VERTIALLY DISPOSED INLET TUBE AND A SUB STANTIALLY VERTICALLY DISPOSED OUTLET TUBE, EACH OF SAID OUTLET TUBES EXTENDING FROM ITS RESPECTIVE MIXING VESSEL IN SUBSTANTIALL THE SAME DIRECTION AND EACH OF SIAD VESSELS CONTAINING AT LEAST ONE LOOSE MAGNETIZABLE BODY, CONNECTIONS BETWEEN THE VESSELS CONSISTING OF THE OUTLET TUBE FROM ONE VESSEL BEING CONNECTED TO THE INLET TUBE OF THE NEXT VESSEL, SAID OUTLET TUBE HAVING A GREATER CROSS-SECTIONAL AREA THAN SAID INLET TUBE, THE MIXING VESSELS BEING ENCLOSED IN ONE OF THE ZONES AND OUTLET TUBES BEING ENCLOSED IN THE OTHER ZONE AND SAID OSCILLATING MEANS COMPRISING A SERIES OF FIXED ELECTROMAGNETS, MEANS COUPLED TO SAID ELECTROMAGNETS FOR PERIODICALLY MAGNETIZING THEM, AND SAID ELECTROMAGNETS BEING EXTERNAL TO BUT IN CLOSE PROXIMITY TO THE MIXING VESSEL TO MOVE EACH OF THE LOOSE MAGNETIZABLE BODIES IN THE MIXING VESSELS.
References Cited (Backward Citations)
US833573A
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US1297171A
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US1783203A
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US2038559A
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US2710250A
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US2885432A
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US2895808A
Cited
US2827172A
Cited
US3089756A
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US2951689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |