US4152242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immunodisc electrophoresis
Assignee: International Foundation of Microbiology
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Filing: 1973-12-17
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Granted: 1979-05-01
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Expires: 1993-12-17
Abstract
Abstract An electrophoretic gel apparatus and analytical method are provided for analyzing samples without the need for removing the gel from the apparatus. The electrophoretic gel is provided with a central opening therethrough for accomodating an analytical reagent, so that the latter may react with electrophoretically separated components of a sample undergoing analysis.
Inventors
- 👤 Sanit Makonkawkeyoon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:20
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44756; G01N27/44704; G01N27/44717; G01N27/44721; G01N27/44747
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
84 words
Apparatus for carrying out analytical determinations on a sample containing unknown components, comprising, in combination, a hollow enclosure, an electrophoretic gel column within said enclosure and adapted to receive the sample at one end thereof, means for electrophoretically separating the various components of the sample from each other and disposing them across the gel column at intervals therealong, said gel column having a central bore therein open for receiving an analytical reagent for contacting the separated components of the sample disposed along the column.
Claim 2
Dependent Claim
84 words
Apparatus for carrying out analytical determinations on a sample containing unknown components, comprising, in combination, a hollow enclosure, an electrophoretic gel column within said enclosure and adapted to receive the sample at one end thereof, means for electrophoretically separating the various components of the sample from each other and disposing them across the gel column at intervals therealong, said gel column having a central bore therein open for receiving an analytical reagent for contacting the separated components of the sample disposed along the column.
Claim 3
Independent Claim
74 words
A device for carrying out analytical determinations on a sample containing unknown components, comprising, in combination, an elongated container, an elongated electrophoretic gel disposed in said container, and means for separating the components of the sample into concentrated discs spaced along said gel, said gel having a central bore therein open for receiving an analytical reagent for contacting the separated components of the sample and having an axis coincidental with that of said container.
Claim 4
Independent Claim
74 words
A device for carrying out analytical determinations on a sample containing unknown components, comprising, in combination, an elongated container, an elongated electrophoretic gel disposed in said container, and means for separating the components of the sample into concentrated discs spaced along said gel, said gel having a central bore therein open for receiving an analytical reagent for contacting the separated components of the sample and having an axis coincidental with that of said container.
Claim 5
Dependent Claim
67 words
Apparatus for use in electrophoresis and electrofocusing including a hollow transparent elongated enclosure and an elongated core member of smaller cross-section than the cross-section of the enclosure within the enclosure, stopper means for closing one end of said enclosure, said stopper means removably holding said member in a selected position within said enclosure, and a separating gel in said enclosure and between said core member and enclosure.
Claim 6
Dependent Claim
67 words
Apparatus for use in electrophoresis and electrofocusing including a hollow transparent elongated enclosure and an elongated core member of smaller cross-section than the cross-section of the enclosure within the enclosure, stopper means for closing one end of said enclosure, said stopper means removably holding said member in a selected position within said enclosure, and a separating gel in said enclosure and between said core member and enclosure.
Claim 7
Dependent Claim
17 words
The structure of claim 3 wherein said enclosure is a tube and said member is a rod.
Claim 8
Dependent Claim
19 words
The structure of claim 4 wherein said stopper means include means for holding said rod coaxially with said tube.
Claim 9
Dependent Claim
12 words
The structure of claim 3 wherein said enclosure has an annular cross-section.
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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |