Patent US4847963A successfully refreshed from Google Patents.
Patent US3697406A successfully refreshed from Google Patents.
US3697406A
Expired / Lapsed
US
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Apparatus for electrophoretic separation
Assignee: Pfizer Health AB
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Filing: 1970-12-29
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Granted: 1972-10-10
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Expires: 1990-12-29
Abstract
Abstract An elution chamber for an electrophoretic separation column. The chamber is located at the lower end of the column above the lower end electrode chamber and is separated from the electrode chamber by membrane. The lower end of the elution chamber has a diameter which exceeds the diameter of the column. Elution liquid is supplied to the chamber either from the membrane or from an inlet at the periphery of the elution chamber and the chamber is drained from a central outlet.
Inventors
- 👤 Per Just Svendsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:59
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44704
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |