US3778295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical plating method of preparing radiation source material
Assignee: United States Atomic Energy Commission
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Filing: 1972-03-08
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Granted: 1973-12-11
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Expires: 1992-03-08
Abstract
Abstract A UNIFORM DISPERSION OF A RADIOISOTOPE WITHIN A NOBLE METAL MATRIX IS PROVIDED BY CHEMICALLY PLATING A NOBLE METAL COATING ONTO PARTICLES INCLUDING A DISSOCIABLE COMPOUND OF THE RADIOISOTOPE. A SUSPENSION OF THE DISSOCIABLE COMPOUND IN A CHEMICALLY REDUCTIVE SOLUTION IS PREPARED AND NOBLE METAL CATIONS ADDED TO PRODUCE TO NOBLE METAL COATINGS. THE COATED PARTICLES ARE FILTERED, DRIED AND HEATED TO CALCINE THE DISSOCIABLE COMPOUND TO A REFRACTORY POWDER. THE POWDER CAN BE ENCAPSULATED IN MEASURED PORTIONS OR CONSOLIDATED AND SHAPED INTO AN ELONGATED FORM FOR EASY APPORTIONMENT AS RADIATION SOURCE MATERIAL.
Inventors
- 👤 P Smith
- 👤 R Huntoon
- 👤 W Mosley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:50
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04; G21G4/02
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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |