US3799883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of high purity fission product molybdenum-99
Assignee: United States, AS REPRESENTATIVE BY DEPARTMENT OF ENERGY
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Filing: 1971-06-30
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Granted: 1974-03-26
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Expires: 1991-06-30
Abstract
Abstract HIGH PURITY FISSION PRODUCT MOLYBDENUN-99 IS PREPARED BY A PROCESS WHICH COMPRISES THE STEPS OF: (A) IRRADIATING A URANIUM MATERIAL, (B) DISSOLVING THE IRRADIATED URANUM MATERIAL IN AN AQUEOUS INORGANIC ACID TO FORM A SOLUTION, (C) PRECIPATING MOLYBDENUM-99 BY CONTACTING THE SOLUBLE WITH ALPHA-BENZOINOXIME, (D) RECOVERING THE MOLYBDENUM PRECIPITATE AND DISSOLVING THE PRECIPITATE IN AN AQUEOUS ALKALINE SOLUTION, (E) CONTACTING THE SOLUTION CONTAINING THE DISSOLVED MOLYBDENUM-99 WITH ADSORBENTS WHICH ARE SELECTIVE FOR THE REMOVAL OF IMPURITIES ASSOCIATED THEREWITH, AND (F) THEREAFTER RECOVERING RADIOACTIVE MOLYBDENUM-99.
Inventors
- 👤 H Arino
- 👤 A Thornton
- 👤 H Kramer
- 👤 Govern J Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:45
CPC Classifications
G; G21; G21G; G21G1/00; G21G1/04; G21G1/06; G21G1/08; C; C01; C01G; C01G39/00; C01G39/003
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |