US4832916A
Expired / Lapsed
US
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Chromatographic column for immunological determining methods
Assignee: Individual
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Filing: 1987-02-24
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Granted: 1989-05-23
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Expires: 2007-02-24
Abstract
Abstract The invention relates to a chromatographic column for separating antigen-antibody complexes from the free antigens not bonded to the antibodies and/or for complete bonding of all marked substances in the immunological determination of antigens or haptens by radio-immunological, luminescence-immunological, fluorescence-immunological or enzyme-immunological determination methods in which a crepe-like tightly rolled filter paper of high degree of purity, in particular of regenerate cellulose, is pressed into a water-proof and water-tight envelope as nonpolar column material. According to the invention the chromatographic upright column comprises an upper reaction portion chargeable from above and a lower separation and measuring portion which are separated from each other by a perforable bottom, the column being fastened from below on the perforable bottom of the column.
Inventors
- 👤 Armin Gilak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:49
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/60; G01N30/6052; B; B01; B01J; B01J20/00; B01J20/22; B01J20/24; B01J20/281; B01J20/282; B01J20/285; B01J20/30; B01J20/32; B01J20/3202; B01J20/3206; B01J20/3208; B01J20/3212; B01J20/3231; B01J20/3242; B01J20/3244; B01J20/3246; B01J20/3248; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/536; G01N33/537; G01N33/538; B01J2220/00; B01J2220/50; B01J2220/54; B01J2220/64; G01N30/04; G01N30/06; G01N30/16; G01N30/50; G01N30/58; G01N30/6082; G01N30/62; G01N30/74; Y; Y10; Y10S; Y10S436/00; Y10S436/807; Y10S436/81
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
147 words
Chromatographic column comprising means for separating antigen-antibody complexes from the free antigens not bonded to the antibodies and/or for complete bonding of all marked substance in the immunological determination of antigens or haptens by radio-immunological, luminescence-immunological, fluoresce-immunological. or enzyme-immunological determination methods, said chromatographic column being inserted in a sealing manner in a test tube and comprising an upper potion defining a reaction vessel for receiving reagents, a tightly roller filter material of high degree purity, an envelope made from water-proof and water-tight material tightly encompassing said filter material, said envelope encompassed filter material being secured in the lower portion of said column, said lower portion of said column defining a separation and measuring portion, and a perforable bottom member separating said reaction vessel from said encompassed filter material, whereby upon perforation of the bottom member, the reagents in the reaction vessel will flow through the filter material.
Claim 2
Dependent Claim
147 words
Chromatographic column comprising means for separating antigen-antibody complexes from the free antigens not bonded to the antibodies and/or for complete bonding of all marked substance in the immunological determination of antigens or haptens by radio-immunological, luminescence-immunological, fluoresce-immunological. or enzyme-immunological determination methods, said chromatographic column being inserted in a sealing manner in a test tube and comprising an upper potion defining a reaction vessel for receiving reagents, a tightly roller filter material of high degree purity, an envelope made from water-proof and water-tight material tightly encompassing said filter material, said envelope encompassed filter material being secured in the lower portion of said column, said lower portion of said column defining a separation and measuring portion, and a perforable bottom member separating said reaction vessel from said encompassed filter material, whereby upon perforation of the bottom member, the reagents in the reaction vessel will flow through the filter material.
Claim 3
Dependent Claim
28 words
Chromatographic column according to claim 1, wherein the filter material is pressed into a plastic sheath which is surrounded by a metallic sheath, in particular of galvanized copper.
Claim 4
Dependent Claim
27 words
Chromatographic column according to claim 1, including a fitting collar at the upper end of the reaction vessel for inserting said column into a plastic test tube.
Claim 5
Dependent Claim
40 words
Chromatographic column according to claim 1, wherein the filter material portion of the column to increase its bonding affinity is prepared by chemical impregnating agents such as organic acids, in particular maleic acid or oxalic acid or possibly a base.
Claim 6
Dependent Claim
62 words
Chromatographic column according to claim 1, comprising a lower reaction vessel with attachable filter and measuring portion in which, tightly pressed crepe filter material is disposed which tightly closes the wall and is disposed in a sheath to increase the bonding affinity of said filter material, the column being tunable through 180° and placed upside down for the separating and measuring operation.
Claim 7
Dependent Claim
81 words
Chromatographic column according to claim 1, wherein two tube-like microcuvettes closed at the bottom are disposed adjacent each other, and as reaction vessel a column top is used or formation of the microcuvette itself as reaction vessel with performable cover, and on the second microcuvette a separating or measuring column top is disposed with a column of filter paper or insertion of the filter only into the second microcuvette, luminescence measurements taking place in each case solely at the second microcuvette.
Claim 8
Dependent Claim
14 words
Chromatographic column according to claim 1, wherein the filter material comprises a regenerated cellulose.
Claim 9
Dependent Claim
54 words
Chromatographic column according to claim 1, wherein the upper portion of the envelope carries at the top and outside a funnel-like widening with which it is fastened in a clamping fit beneath the bottom member material is pressed into a plastic sheath which is surrounded by a metallic sheath, in particular of galvanized copper.
Claim 10
Dependent Claim
40 words
Chromatographic column according to claim 8, wherein the filter material portion of the column is surrounded by plastic, as an adapting member to a column inner wall with which it is clamped against a conical-shaped bottom of the reaction vessel.
Claim 11
Dependent Claim
40 words
Chromatographic column according to claim 9, wherein the filter portion of the column is shielded from the bottom of the reaction portion in particular for photometric measurements, a conical-like widened shield consisting of a perforable bottom conical-shaped towards the bottom.
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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |