US3663218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burnable poison for nuclear reactor
Assignee: Combustion Engineering Inc
•
Filing: 1969-09-12
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Granted: 1972-05-16
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Expires: 1989-09-12
Abstract
Abstract An alloy for use as a burnable poison in nuclear reactors which consists of 0.5 - 14 weight percent gadolinium and 0 - 4 weight percent tin with the remainder being zirconium.
Inventors
- 👤 William R Yario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:44
CPC Classifications
C; C22; C22C; C22C16/00; G; G21; G21C; G21C7/00; G21C7/02; G21C7/04; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |