Patent US3330889A successfully refreshed from Google Patents.
US3330889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of heat sources for radioisotope heated thermoelectric generators
Assignee: Individual
•
Filing: 1964-06-12
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Granted: 1967-07-11
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Expires: 1984-06-12
Abstract
No abstract record available.
Inventors
- 👤 Samos George
- 👤 Justin L Bloom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:34
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04; C; C01; C01G; C01G23/00; C01G23/003; C01G23/006
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
THE METHOD OF MAKING STRONTIUM TITANATE FUEL FOR A RADIOISOTOPE HEATED THERMOELECTRIC GENERATOR, COMPRISING THE STEPS OF NEUTRALIZING AN ACID STRONTIUM SOLUTION WITH NAOH AND ADDING TWICE THE STOICHIOMETRIC QUANTITY OF NAOH REQUIRED TO PRECIPITATE ALL THE CATIONS IN THE SOLUTION AS HYDROXIDES, HEATING THE RESULTING MIXTURE, STIRRING THE HEATED MIXTURE, SLOWLY ADDING ETHANOLAMINE TITANATE WHILE MAINTAINING SAID STIRRING TO FORM A STRONTIUM-90 TITANATE SLURRY, DIGESTING AND AGITATING SAID SLURRY, WASHING THE SLURRY BY DECANTATION, COOLING THE WASHED SLURRY, FILTERING THE COOLED SOLID MATERIAL AND DRYING THE FILTERED MATERIAL, TAMPING THE DRIED MATERIAL INTO A ZIRCONIUM OXIDE CRUCIBLE TO FORM COMPACTS, AND SINTERING THE TAMPED MATERIAL, SAID COMPACTS ADAPTED TO BE IN A CLADDING.
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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |