Patent US3710118A successfully refreshed from Google Patents.
US3710118A
Expired / Lapsed
US
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Radioisotope generator
Assignee: Mallinckrodt Chemical Works
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Filing: 1970-05-25
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Granted: 1973-01-09
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Expires: 1990-05-25
Abstract
Abstract A generator is provided for eluting a daughter radioisotope from a parent radioisotope. The generator is characterized by an elongate closed vessel having a convergent closed lower end and containing therein a supply of a parent radioisotope material spaced from the closed lower end. The vessel is closed at its upper end with a closure through which extends a first conduit communicating with the upper end of the vessel for introducing an eluant into the vessel. Also extending through the closure is a second conduit communicating with the lower end of the vessel which provides for passage of eluate from the lower end of the vessel.
Inventors
- 👤 R Holgate
- 👤 J Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:38
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04; G21G4/06; G21G1/00; G21G1/0005
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
121 words
A generator for eluting a daughter radioisotope from a parent radioisotope comprising an elongate closed vessel having an integral convergent closed lower end and containing therein a supply of a parent radioisotope, means in said vessel spaced from the lower end thereof for maintaining the supply of the parent radioisotope spaced from said lower end, a closure for the upper end of said vessel, a first conduit extending through said closure and communicating with the upper end of the vessel for introducing an eluant into the vessel and a second conduit extending through said closure and said supply and said means and communicating with the lower end of the vessel for passage of eluate from the lower end of the vessel.
Claim 2
Dependent Claim
121 words
A generator for eluting a daughter radioisotope from a parent radioisotope comprising an elongate closed vessel having an integral convergent closed lower end and containing therein a supply of a parent radioisotope, means in said vessel spaced from the lower end thereof for maintaining the supply of the parent radioisotope spaced from said lower end, a closure for the upper end of said vessel, a first conduit extending through said closure and communicating with the upper end of the vessel for introducing an eluant into the vessel and a second conduit extending through said closure and said supply and said means and communicating with the lower end of the vessel for passage of eluate from the lower end of the vessel.
Claim 3
Dependent Claim
98 words
A generator according to claim 1, characterized in that the vessel comprises a glass tube having a hemispherical lower end, the closure comprises a stopper in the upper end of the tube, the means for maintaining the parent radioisotope spaced from its lower end comprising a filter mounted in the tube above its lower end, the parent radioisotope being confined between the filter and the stopper, the first conduit extending down through the stopper and terminating immediately below the stopper, the second conduit extending down through the stopper and the filter to the lower end of the tube.
References Cited (Backward Citations)
US3564256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |