US4157280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test set for detecting the presence of antigens associated with hepatitis
Assignee: Cordis Laboratories Inc
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Filing: 1975-09-29
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Granted: 1979-06-05
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Expires: 1995-09-29
Abstract
Abstract A test set useful for detecting the presence of antigens associated with hepatitis comprising an insoluble, polymeric disc-like solid having antibody reactive with antigens associated with hepatitis bonded thereto, an enzyme-hepatitis antibody conjugate reagent, an enzyme substrate solution, control sera negative, weakly positive, and strongly positive for antigens associated with hepatitis, an enzyme substrate buffer, and a horse globulin solution. Preferably, the enzyme of the conjugate is alkaline phosphatase, the enzyme substrate is p-nitrophenylphosphate and the substrate buffer has a pH on the order of 9.8.
Inventors
- 👤 Seymour P. Halbert
- 👤 Milton Anken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:44
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/576; G01N33/543; G01N33/544; G01N33/545; Y; Y10; Y10S; Y10S436/00; Y10S436/82
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
137 words
a test set useful for detecting the presence of antigens associated with hepatitis is a test sample comprising, in combination: an insoluble polymeric solid having a layer of protein reactive groups grafted into its surface and having hepatitis associated antibody bonded to said reactive groups, the surfaces on said solid being distorted to comprise a field of high and low points to provide a solid which, when placed in a flat-bottomed vial, will be substantially in contact with any solution in the vial while minimizing surface-to-surface contact, said solid being for immobilizing hepatitis antigens from the sample; an alkaline phosphatase - antibody conjugate reagent for labeling hepatitis antigen immobilized on said solid; an enzyme substrate capable of being chemically changed under the catalytic influence of the alkaline phosphatase; and a flat-bottomed vial sized to receive said solid.
Claim 2
Dependent Claim
137 words
a test set useful for detecting the presence of antigens associated with hepatitis is a test sample comprising, in combination: an insoluble polymeric solid having a layer of protein reactive groups grafted into its surface and having hepatitis associated antibody bonded to said reactive groups, the surfaces on said solid being distorted to comprise a field of high and low points to provide a solid which, when placed in a flat-bottomed vial, will be substantially in contact with any solution in the vial while minimizing surface-to-surface contact, said solid being for immobilizing hepatitis antigens from the sample; an alkaline phosphatase - antibody conjugate reagent for labeling hepatitis antigen immobilized on said solid; an enzyme substrate capable of being chemically changed under the catalytic influence of the alkaline phosphatase; and a flat-bottomed vial sized to receive said solid.
Claim 3
Dependent Claim
18 words
The set of claim 1 further including sera known to contain different concentrations of antigens associated with hepatitis.
Claim 4
Dependent Claim
21 words
The set of claim 2 wherein said sera include sera negative, weakly positive, and strongly positive for antigens associated with hepatitis.
Claim 5
Dependent Claim
20 words
The set of claim 3 further including a globulin solution for minimizing nonspecific immobilization of enzyme on said insoluble solid.
Claim 6
Dependent Claim
24 words
The set of claim 4 further including an alkaline phosphatase substrate buffer for optimizing the catalytic influence of the alkaline phosphatase on said substrate.
Claim 7
Dependent Claim
13 words
The set of claim 1 wherein said alkaline phosphatase enzyme substrate is p-nitrophenylphosphate.
Claim 8
Dependent Claim
31 words
The set of claim 6 further including an enzyme substrate buffer having a pH on the order of 9.8 for optimizing the catalytic influence of the alkaline phosphatase on the p-nitrophenylphosphate.
Claim 9
Dependent Claim
26 words
The set of claim 7 wherein said buffer comprises an aqueous solution 0.028 M in Na 2 CO 3 and 0.001 M in Mg ++ .
Claim 10
Dependent Claim
142 words
A test set useful for detecting the presence of antigens associated with hepatitis in a test sample comprising, in combination: an insoluble polymeric sold having a layer of protein reactive groups grafted onto its surface and having antibodies to antigens associated with hepatitis bonded to said reactive groups, the surfaces on said solid being distorted to comprise a field of high and low points to provide a solid which, when placed in a flat-bottomed vial, will be substantially in contact with any solution in the vial while minimizing surface-to-surface contact, said solid being for immobilizing hepatitis antigens from the sample; an alkaline phosphatase-hepatitis antibody conjugate reagent for labeling hepatitis antigens immobilized on said solid; a quantity of p-nitrophenylphosphate for being exposed to the alkaline phosphatase to detect the presence thereof on said solid; and a flat-bottomed vial sized to receive said solid.
Claim 11
Dependent Claim
142 words
A test set useful for detecting the presence of antigens associated with hepatitis in a test sample comprising, in combination: an insoluble polymeric sold having a layer of protein reactive groups grafted onto its surface and having antibodies to antigens associated with hepatitis bonded to said reactive groups, the surfaces on said solid being distorted to comprise a field of high and low points to provide a solid which, when placed in a flat-bottomed vial, will be substantially in contact with any solution in the vial while minimizing surface-to-surface contact, said solid being for immobilizing hepatitis antigens from the sample; an alkaline phosphatase-hepatitis antibody conjugate reagent for labeling hepatitis antigens immobilized on said solid; a quantity of p-nitrophenylphosphate for being exposed to the alkaline phosphatase to detect the presence thereof on said solid; and a flat-bottomed vial sized to receive said solid.
Claim 12
Dependent Claim
20 words
The set of claim 9 further including control sera negative, weakly positive, and strongly positive for antigens associated with hepatitis.
Claim 13
Dependent Claim
21 words
The set of claim 9 further including a horse globulin solution for minimizing nonspecific immobilization of antigen on said insoluble solid.
Claim 14
Dependent Claim
30 words
The set of claim 9 further including a buffer solution having a pH on the order of 9.8 for optimizing the catalytic influence of the alkaline phosphatase on the p-nitrophenylphosphate.
Claim 15
Dependent Claim
187 words
A test set useful for detecting the presence of antigens associated with hepatitis in a test sample comprising, in combination: an insoluble polymeric solid having antibody reactive with antigens associated with hepatitis bonded thereto for immobilizing hepatitis antigens from the sample, the surfaces on said polymeric solid being distorted to comprise a field of high and low points to provide a solid which, when placed in a flat-bottomed vial, will be substantially in contact with any solution in the vial while minimizing surface-to-surface contact; an alkaline phosphatase-hepatitis antibody conjugate reagent for labeling hepatitis antigens immobilized on said solid; a quantity of p-nitrophenylphosphate for being exposed to the alkaline phosphatase to detect the presence thereof on said solid; quantities of control sera negative, weakly positive, and strongly positive for antigens associated with hepatitis for comparison with the test sample; an enzyme substrate buffer solution having a pH on the order of 9.8 for optimizing the catalytic effect of the alkaline phosphatase on the p-nitrophenylphosphate; a horse globulin solution for minimizing nonspecific immobilization of enzyme on said soluble solid; and a flat-bottomed vial sized to receive said polymeric solid.
Claim 16
Dependent Claim
187 words
A test set useful for detecting the presence of antigens associated with hepatitis in a test sample comprising, in combination: an insoluble polymeric solid having antibody reactive with antigens associated with hepatitis bonded thereto for immobilizing hepatitis antigens from the sample, the surfaces on said polymeric solid being distorted to comprise a field of high and low points to provide a solid which, when placed in a flat-bottomed vial, will be substantially in contact with any solution in the vial while minimizing surface-to-surface contact; an alkaline phosphatase-hepatitis antibody conjugate reagent for labeling hepatitis antigens immobilized on said solid; a quantity of p-nitrophenylphosphate for being exposed to the alkaline phosphatase to detect the presence thereof on said solid; quantities of control sera negative, weakly positive, and strongly positive for antigens associated with hepatitis for comparison with the test sample; an enzyme substrate buffer solution having a pH on the order of 9.8 for optimizing the catalytic effect of the alkaline phosphatase on the p-nitrophenylphosphate; a horse globulin solution for minimizing nonspecific immobilization of enzyme on said soluble solid; and a flat-bottomed vial sized to receive said polymeric solid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-04 | 1982-12-04 | 1983-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-04 | 1986-12-04 | 1987-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-04 | 1990-12-04 | 1991-06-05 | $7700.00 | Window Closed / Lapsed |