US4278652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for determining ferritin
Assignee: CIS Bio International SA
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Filing: 1978-10-26
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Granted: 1981-07-14
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Expires: 1998-10-26
Abstract
Abstract A process for the determination of ferritin in serum or in plasma is disclosed, which comprises incubating an antibody directed against an organ-specific isoferritin, which is covalently bound to nylon(polyamide 6,6), on the one hand with ferritin standard solutions and on the other hand with serum samples, decanting or aspirating the incubation solutions, washing the nylon-antibody-ferritin complex formed and subsequently incubating it with a iodine-labelled antibody directed against a second organ-specific isoferritin, isolating the nylon-antibody-ferritin-anti-body-125I-complex formed, counting its radioactivity in the gamma counter and comparing the standard samples with the serum samples.
Inventors
- 👤 Elfriede Niemann
- 👤 Brian H. Stagg
- 👤 Stuart I. Cowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:48
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/68; G01N33/53; G01N33/543; G01N33/544; G01N33/545; Y; Y10; Y10S; Y10S436/00; Y10S436/801; Y10S436/804; Y10S436/815
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
138 words
A process for the determination of ferritin in serum or in plasma, which comprises incubating an antibody directed against a first organ-specific isoferritin, which is covalently bound to polyamide 6,6, on the one hand with ferritin standard solutions containing an isoferritin identical with or different from that employed for the production of the antibody, and on the other hand with serum samples under the same conditions, decanting or aspirating the incubation solutions, washing the polyamide 6,6-isoferritin specific antibody-ferritin complex formed and subsequently incubating it with a 125 I-labelled antibody directed against a second organ-specific isoferritin, decanting or aspirating the solution, washing the polyamide 6,6-antibody-ferritin anti-body- 125 I complex formed in which the antibodies are directed specifically against the isoferritins of different organs, counting its radioactivity in a gamma counter and comparing the standard samples with the serum samples.
Claim 2
Dependent Claim
138 words
A process for the determination of ferritin in serum or in plasma, which comprises incubating an antibody directed against a first organ-specific isoferritin, which is covalently bound to polyamide 6,6, on the one hand with ferritin standard solutions containing an isoferritin identical with or different from that employed for the production of the antibody, and on the other hand with serum samples under the same conditions, decanting or aspirating the incubation solutions, washing the polyamide 6,6-isoferritin specific antibody-ferritin complex formed and subsequently incubating it with a 125 I-labelled antibody directed against a second organ-specific isoferritin, decanting or aspirating the solution, washing the polyamide 6,6-antibody-ferritin anti-body- 125 I complex formed in which the antibodies are directed specifically against the isoferritins of different organs, counting its radioactivity in a gamma counter and comparing the standard samples with the serum samples.
Claim 3
Dependent Claim
31 words
The process as claimed in claim 1, in which the antibodies are produced against liver, spleen and placental ferritin and in which the standards consists of liver, spleen and placental ferritin.
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) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |