US4309268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for hydrodynamic compensation for electrophoresis crescent distortion
Assignee: McDonnell Douglas Corp
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Filing: 1980-08-15
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Granted: 1982-01-05
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Expires: 2000-08-15
Abstract
Abstract Crescent distortion of output samples collected during a continuous free flow electrophoresis separation process is reduced by providing means with the electrophoresis chamber whereby lateral flow across the chamber may be controllably varied to introduce beneficial hydrodynamic compensation effects to minimize distortion of the sample streams within the electrophoresis chamber.
Inventors
- 👤 David W. Richman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:19
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44756; G01N27/44769
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
144 words
In an apparatus for conducting a continuous free flow electrophoresis separation procedure, the apparatus comprising: a rectilinear buffer filled separation chamber defined by two elongate spaced apart parallel plates forming a front and a back to the chamber, two sides, an end comprising a collection manifold having a plurality of spaced apart collection tubes, an end comprising a buffer solution inlet manifold assembly; two buffer filled electrode chambers, each disposed adjacent to one of the sides of the separation chamber and separated therefrom by a porous membrane; at least one sample inlet port located at or near the inlet of the chamber; the improvement comprising means whereby flow within the apparatus may be controllably varied laterally across the chamber such that crescent distortion for at least one of a plurality of individual components of a sample introduced through the sample inlet port is minimized.
Claim 2
Dependent Claim
144 words
In an apparatus for conducting a continuous free flow electrophoresis separation procedure, the apparatus comprising: a rectilinear buffer filled separation chamber defined by two elongate spaced apart parallel plates forming a front and a back to the chamber, two sides, an end comprising a collection manifold having a plurality of spaced apart collection tubes, an end comprising a buffer solution inlet manifold assembly; two buffer filled electrode chambers, each disposed adjacent to one of the sides of the separation chamber and separated therefrom by a porous membrane; at least one sample inlet port located at or near the inlet of the chamber; the improvement comprising means whereby flow within the apparatus may be controllably varied laterally across the chamber such that crescent distortion for at least one of a plurality of individual components of a sample introduced through the sample inlet port is minimized.
Claim 3
Dependent Claim
39 words
The apparatus of claim 1 wherein the means whereby the flow may be controllably varied comprises means communicating with at least one of the electrode chambers and the separation chamber such that the flow may be varied there between.
Claim 4
Dependent Claim
42 words
The apparatus of claim 1 wherein the means whereby the flow may be controllably varied comprises means communicating with a number of the spaced apart collection tubes of the collection manifold such that the flow within the separation chamber may be varied.
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) | 1985-01-04 | 1985-07-06 | 1986-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-04 | 1989-07-06 | 1990-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-04 | 1993-07-06 | 1994-01-05 | $7700.00 | Window Closed / Lapsed |