Patent US2879217A successfully refreshed from Google Patents.
US2879217A
Expired / Lapsed
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Continuous electrophoresis apparatus with laminated wick electrodes
Assignee: Beckman Coulter Inc
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Filing: 1956-06-07
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Granted: 1959-03-24
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Expires: 1976-06-07
Abstract
No abstract record available.
Inventors
- 👤 Emmett L Durrum
- 👤 Edward G Pickels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:15
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44756; G01N27/44769
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A CONTINUOUS ELECTROPHORESIS APPARATUS FOR THE SEPARATION OF COMPONENTS FROM A MATERIAL SAMPLE CONTAINING THE SAME COMPRISING AN ANTICOVENCTION CURTAIN-LIKE MEDIUM ADAPTED TO HAVE BACKGROUND ELECTROLYTE FED THERETO, MEANS FOR CONTINUOUSLY FEEDING A LIQUID BACKGROUND ELECTROLYTE TO THE UPPER MARGIN OF SAID MEDIUM, MEANS FOR APPLYING SAID MATERIAL SAMPLE TO SAID CURTAIN IN A REGION NEAR THE SAID UPPER MARGIN, MEANS FORMING COLUMNLIKE ELECTROLYTIC WICKS IN CONDUCTIVE CONTACT WITH THE SIDE MARGINS OF THE MEDIUM, SAID WICKS EACH COMPRISING A COLUMN OF ABSORBENT MATERIAL IN DIRECT PHYSICAL CONTACT WITH SAID MEDIUM ALONG A SUBSTANTIAL LENGTH OF THE SIDE MARGIN OF THE SAME, MEANS FOR CONTINUOUSLY APPLYING A LIQUID ELECTROLYTE TO THE UPPER ENDS OF THE COLUMN-LIKE WICKS, AND MEANS FOR MAKING ELECTRICAL CONNECTION TO THE BOTTOM OF SAID COLUMNS WHEREBY A TRANSVERSE ELECTRIC FIELD IS APPLIED TO SAID CURTAIN-LIKE MEDIUM.
Claim 2
Dependent Claim
140 words
A CONTINUOUS ELECTROPHORESIS APPARATUS FOR THE SEPARATION OF COMPONENTS FROM A MATERIAL SAMPLE CONTAINING THE SAME COMPRISING AN ANTICOVENCTION CURTAIN-LIKE MEDIUM ADAPTED TO HAVE BACKGROUND ELECTROLYTE FED THERETO, MEANS FOR CONTINUOUSLY FEEDING A LIQUID BACKGROUND ELECTROLYTE TO THE UPPER MARGIN OF SAID MEDIUM, MEANS FOR APPLYING SAID MATERIAL SAMPLE TO SAID CURTAIN IN A REGION NEAR THE SAID UPPER MARGIN, MEANS FORMING COLUMNLIKE ELECTROLYTIC WICKS IN CONDUCTIVE CONTACT WITH THE SIDE MARGINS OF THE MEDIUM, SAID WICKS EACH COMPRISING A COLUMN OF ABSORBENT MATERIAL IN DIRECT PHYSICAL CONTACT WITH SAID MEDIUM ALONG A SUBSTANTIAL LENGTH OF THE SIDE MARGIN OF THE SAME, MEANS FOR CONTINUOUSLY APPLYING A LIQUID ELECTROLYTE TO THE UPPER ENDS OF THE COLUMN-LIKE WICKS, AND MEANS FOR MAKING ELECTRICAL CONNECTION TO THE BOTTOM OF SAID COLUMNS WHEREBY A TRANSVERSE ELECTRIC FIELD IS APPLIED TO SAID CURTAIN-LIKE MEDIUM.
References Cited (Backward Citations)
GB716875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |