US3827986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Technetium-99m generators
Assignee: GE Healthcare Ltd
•
Filing: 1972-08-04
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Granted: 1974-08-06
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Expires: 1992-08-04
Abstract
Abstract YIELDS OF TECHNETIUM-99M, OBTAINED BY ELUTION FROM GENERATORS COMPRISING MOLYBDENUM-99 ADSORBED ON AN ION-EXCHANGE MATERIAL, ARE IMPROVED BY INCORPORATING A HYDRATED ELECTRON SCAVENGER, PARTICULARLY NITRATE OR NITRIGE ION, AT LOW CONCENTRATION IN THE AQUEOUS FLUID OF THE GENERATOR AND/OR IN THE ELUANT.
Inventors
- 👤 J Charlton
- 👤 D Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:39
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04
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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |