Patent US3154501A successfully refreshed from Google Patents.
US3154501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polonium compound heat sources
Assignee: —
•
Filing: —
•
Granted: 1964-10-27
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Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:35
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF MAKING A RADIOACTIVE MATERIAL FOR USE AS A HEAT SOURCE WHICH COMPRISES PLACING A QUANTITY OF POLONIUM-210 AND A QUANTITY OF AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF SCANDIUM, YTTRIUM AND THE LANTHANIDES IN A CONTAINER, CLOSING SAID CONTAINER, AND THEREAFTER HEATING SAID CONTAINER AND CONTENTS TO A SUFFICIENTLY HIGH TEMPERATURE AS TO REACT SAID CONTENTS TO FORM A COMPOUND OF POLONIUM-210 WITH A SAID ELEMENT.
Claim 2
Independent Claim
72 words
THE METHOD OF MAKING A RADIOACTIVE MATERIAL FOR USE AS A HEAT SOURCE WHICH COMPRISES PLACING A QUANTITY OF POLONIUM-210 AND A QUANTITY OF AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF SCANDIUM, YTTRIUM AND THE LANTHANIDES IN A CONTAINER, CLOSING SAID CONTAINER, AND THEREAFTER HEATING SAID CONTAINER AND CONTENTS TO A SUFFICIENTLY HIGH TEMPERATURE AS TO REACT SAID CONTENTS TO FORM A COMPOUND OF POLONIUM-210 WITH A SAID ELEMENT.
References Cited (Backward Citations)
US2844639A
Cited
US3058802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |