US4933554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a carrier for a plurality of radioactive samples
Assignee: Wallac Oy
•
Filing: 1988-08-29
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Granted: 1990-06-12
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Expires: 2008-08-29
Abstract
Abstract In a method of producing a carrier for a plurality of radioactive samples to be monitored in a liquid scintillation counter, wells are provided in a rigid plate (1) of a photon attenuating material in that holes disposed in a matrix configuration are covered from one side of the plate (1) by a first photon permeable foil (2), sample carrying cut-outs (3) from a sorption sheet on which samples have been deposited are placed in said walls a scintillation fluid is added to the wells, and the wells are sealed by a second permeable foil (4) to keep the cut-outs (3) and the scintillation fluid within the respective wells.
Inventors
- 👤 Kauko Lehtinen
- 👤 Tapio Yrjonen
- 👤 Jan strup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:37
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/204; G01T1/2042; G01T1/2047
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
Method of producing a carrier for a plurality of radioactive samples to be monitored in a liquid scintillation counter, characterized in that wells are provided in a rigid plate (1) of a photon attenuating material in that holes disposed in a matrix configuration are covered from one side of the plate (1) by a first photon permeable foil (2), sample carrying cut-outs (3) from a sorption sheet on which said samples have been deposited, are placed in said wells, a scintillation fluid is added to the wells, and the wells are sealed by a second photon permeable foil (4) to keep the cut-outs (3) and the scintillation fluid within the respective wells.
Claim 2
Dependent Claim
112 words
Method of producing a carrier for a plurality of radioactive samples to be monitored in a liquid scintillation counter, characterized in that wells are provided in a rigid plate (1) of a photon attenuating material in that holes disposed in a matrix configuration are covered from one side of the plate (1) by a first photon permeable foil (2), sample carrying cut-outs (3) from a sorption sheet on which said samples have been deposited, are placed in said wells, a scintillation fluid is added to the wells, and the wells are sealed by a second photon permeable foil (4) to keep the cut-outs (3) and the scintillation fluid within the respective wells.
Claim 3
Dependent Claim
15 words
Method according to claim 1, characterized in that said foils (2, 4) are adhesive foils.
Claim 4
Dependent Claim
21 words
Method according to claim 1, characterized in that at least one of the foils (2, 4) is colored to simulate quenching.
Claim 5
Dependent Claim
20 words
Method according to claim 1, characterized in that the well walls (5) in the plate (1) are made photon reflective.
References Cited (Backward Citations)
GB203048A
Cited
US3924128A
Cited
US4298796A
Cited
JPS58168028A
Cited
GB2125183A
Cited
US4728792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |