Patent US3833509A successfully refreshed from Google Patents.
US3833509A
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US
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Radionuclide generator production method
Assignee: Mallinckrodt Chemical Works
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Filing: 1971-09-02
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Granted: 1974-09-03
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Expires: 1991-09-02
Abstract
Abstract COMMERCIALLY IMPORTANT RADIONUCLIDE GENERATORS UTILIZE AN ALUMINA SORBENT ON WHICH ADSORBED A PARENT RADIONUCLIDE. THE ELUATE FROM SUCH GENERATORS CONTAINS SIGNIFICANT QUANTITIES OF ALUMINUM IONS IN ADDITION TO THE DESIRED DAUGHTER RADIONUCLIDE. WASHING THE ALUMINA WITH AN ACETATE FIXING SOLUTION DURING THE PRODUCTION OF THE GENERATORS SUBSTANTIALLY REDUCES THE ALUMINUM ION CONTENT OF ELUATES OBTAINED THEREFROM.
Inventors
- 👤 J Brown
- 👤 O Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:41
CPC Classifications
G; G21; G21G; G21G1/00; G21G1/0005; C; C01; C01G; C01G99/00; G21G1/001; G21G2001/0042
Claims Analysis
Total Claims: 0
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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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |