Patent US5215092A successfully refreshed from Google Patents.
US3812264A
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Method of producing a carrier for a scintigraphic preparation and scintigraphic preparations including said carrier
Assignee: US Philips Corp
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Filing: 1970-05-01
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Granted: 1974-05-21
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Expires: 1990-05-01
Abstract
Abstract Scintigraphic carriers are obtained by sensitizing red blood corpuscles by means of a stannous chloride solution having a physiological pH. The carriers are then labelled with radioactive pertechnetate. The labelling efficiency is appreciably higher than in the known methods.
Inventors
- 👤 J Nouel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:40
CPC Classifications
A; A61; A61K; A61K51/00; A61K51/12; A61K51/1203; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; A61K2123/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
65 words
A method of producing a scintigraphic preparation comprising subjecting red blood corpuscles to the action of a stannous chloride solution buffered to a physiological pH, in an amount of from 0.03 mg to 1.5 mg of stannous chloride per 100 ml of blood, removing any excess of stannous ions and then treating said red blood corpuscles with a pertechnetate thereby radioactively labelling said red corpuscles.
Claim 2
Dependent Claim
13 words
The method of claim 1 wherein trisodium citrate is used as a buffer.
Claim 3
Dependent Claim
13 words
A carrier for a scintigraphic preparation obtained by the method of claim 1.
Claim 4
Dependent Claim
9 words
A scintigraphic preparation obtained by the method of claim
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |