US3145181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radioactive sources
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1961-03-14
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Granted: 1964-08-18
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Expires: 1981-03-14
Abstract
No abstract record available.
Inventors
- 👤 Courtois Guy
- 👤 Clerc Pierre Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:19
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04; G21G4/06; C; C03; C03C; C03C10/00; C03C10/0036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A RADIOACTIVE SOURCE RESISTING TO MECHANICAL, THERMAL AND CHEMICAL SEVERE CONDITIONS, CONSTITUTED BY A DEVITRIFIED GLASS COMPRISING ESSENTIALLY SILICA, ALUMINA, TITANIA AND COBALT OXIDE, BUT DEVOID OF POTASSIUM AND SODIUM, AT LEST PART OF THE COBALT ATOMS IN SAID COBALT OXIDE BEING RADIOACTIVE COBALT-60 ATOMS.
Claim 2
Dependent Claim
45 words
A RADIOACTIVE SOURCE RESISTING TO MECHANICAL, THERMAL AND CHEMICAL SEVERE CONDITIONS, CONSTITUTED BY A DEVITRIFIED GLASS COMPRISING ESSENTIALLY SILICA, ALUMINA, TITANIA AND COBALT OXIDE, BUT DEVOID OF POTASSIUM AND SODIUM, AT LEST PART OF THE COBALT ATOMS IN SAID COBALT OXIDE BEING RADIOACTIVE COBALT-60 ATOMS.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |