Patent US2532487A successfully refreshed from Google Patents.
US4476016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart attack screening method, apparatus and kit for same
Assignee: Individual
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Filing: 1982-03-23
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Granted: 1984-10-09
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Expires: 2002-03-23
Abstract
Abstract The invention consists of improved apparatus and a kit packaged improved apparatus and methods for use of such apparatus such kits especially adapted for isolating and identifying and quantitatively measuring the MB iso-enzyme of creatine phosphokinase in fresh human blood serum and apparatus including combinations of racks, glass receptacles and other equipment for making various quantitative and qualitative blood and blood serum tests.
Inventors
- 👤 John Y. Kiyasu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:04
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/60; G01N30/6052; G01N30/6069; C; C12; C12Q; C12Q1/00; C12Q1/48; C12Q1/50; G01N30/88; G01N2030/8809; G01N2030/8813; G01N30/6082; G01N30/6091
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
A packed glass column having a packing consisting essentially of DEAE-dextran and especially adapted for open system chromatographic isolation of the creatine phospholinase-MB fraction in the serum of human patients, said column having a cellulosic cigarette filter tip consisting essentially of linearly milled cellulose containing fiber positioned in the lower tip portion of said column, said tip shielded by a plug of material selected from the group consisting of sea sand, glass beads and DEAE-glycophase glass beads and mixtures thereof and having a column spigot in the eluent collection tube, having as a special feature, multiple air vent slits incorporated throughout the length of the shaft of said spigot thereby allowing open system chromatography.
Claim 2
Dependent Claim
114 words
A packed glass column having a packing consisting essentially of DEAE-dextran and especially adapted for open system chromatographic isolation of the creatine phospholinase-MB fraction in the serum of human patients, said column having a cellulosic cigarette filter tip consisting essentially of linearly milled cellulose containing fiber positioned in the lower tip portion of said column, said tip shielded by a plug of material selected from the group consisting of sea sand, glass beads and DEAE-glycophase glass beads and mixtures thereof and having a column spigot in the eluent collection tube, having as a special feature, multiple air vent slits incorporated throughout the length of the shaft of said spigot thereby allowing open system chromatography.
Claim 3
Dependent Claim
27 words
The chromatographic packed glass column of claim 1 in which the column is designed and adapted for use in and with a flexible rack and block assembly.
Claim 4
Dependent Claim
56 words
A chromatographic column spigot adapted for storage in the column cylinder in an eluent collection tube, having as a special feature, multiple air vent slits incorporated throughout the length of the shaft of said spigot and having a receptacle for holding a filter and having shoulders adapted to fit on a surface of the column cylinder.
Claim 5
Dependent Claim
56 words
A chromatographic column spigot adapted for storage in the column cylinder in an eluent collection tube, having as a special feature, multiple air vent slits incorporated throughout the length of the shaft of said spigot and having a receptacle for holding a filter and having shoulders adapted to fit on a surface of the column cylinder.
References Cited (Backward Citations)
US2859878A
Cited
GB908760A
Cited
US3440864A
Cited
US3478886A
Cited
US3693804A
Cited
US3791522A
Cited
US3955423A
Cited
US4046634A
Cited
US4055498A
Cited
US4091659A
Cited
US4315892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-09 | 1988-04-09 | 1988-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-09 | 1992-04-09 | 1992-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-09 | 1996-04-09 | 1996-10-09 | $7700.00 | Window Closed / Lapsed |