US3969218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elution electrophoresis
Assignee: Energy Research and Development Administration ERDA
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Filing: 1975-02-11
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Granted: 1976-07-13
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Expires: 1995-02-11
Abstract
Abstract Colloids and macromolecules are separated by simultaneously carrying out elution and electrophoretic separation processes.
Inventors
- 👤 Charles D. Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:02
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; B; B01; B01D; B01D57/00; B01D57/02; G01N30/00; G01N30/02; G01N30/26; G01N30/28; G01N2030/285
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
An apparatus for separating macromolecules, comprising: a column packed with a particulate anticonvective medium; sample introduction means communicating with a central portion of said column; electrode means for applying an emf across the length of said column and positioned adjacent the extremities of said column; eluent introduction means at one end of said column; eluate extraction means at the other end of said column; flow balancing means positioned downstream from said eluate extraction means for preventing samples from flowing past said eluate extraction means; an eluent source communicating with said balancing means; and means for detecting separated molecules communicating with said extraction means.
Claim 2
Independent Claim
103 words
An apparatus for separating macromolecules, comprising: a column packed with a particulate anticonvective medium; sample introduction means communicating with a central portion of said column; electrode means for applying an emf across the length of said column and positioned adjacent the extremities of said column; eluent introduction means at one end of said column; eluate extraction means at the other end of said column; flow balancing means positioned downstream from said eluate extraction means for preventing samples from flowing past said eluate extraction means; an eluent source communicating with said balancing means; and means for detecting separated molecules communicating with said extraction means.
Claim 3
Dependent Claim
27 words
The apparatus according to claim 1 further including a water jacket substantially surrounding the packed section of said column and temperature control means communicating with said jacket.
Claim 4
Dependent Claim
25 words
The apparatus according to claim 1 wherein said electrode means are positioned within electrode chambers for permitting electrolysis gases to escape without entering said column.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |