US3720739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear fuel pressing process
Assignee: General Electric Co
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Filing: 1969-04-14
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Granted: 1973-03-13
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Expires: 1989-04-14
Abstract
Abstract A PRESSING TECHNIQUE FOR PRODUCING NUCLEAR FULE PELLETS FOR USE IN NUCLEAR REACTORS IS DISCLOSED. TYPICALLY, AN ACTIVE NUCLEAR FUEL MATERIAL IS PRESSED AT A PRESSURE OF FROM ABOUT 6000 TO ABOUT 10,000 P.S.I. AND A TEMPERATURE FROM ABOUT 900 TO ABOUT 1300*C. FOR ABOUT 3 TO ABOUT 20 MINUTES. FOR GOOD RESULTS, IT IS NECESSARY THAT FULL PRESSURE BE APPLIED BEFORE THE TEMPERATURE IS INCREASED TO THE TEMPERATURE AT WHICH SIGNIFICANT PLASTIC FLOW BEGINS IN THE FUEL MATERIAL.
Inventors
- 👤 L Hagie
- 👤 C Ryer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:20
CPC Classifications
G; G21; G21C; G21C21/00; G21C21/02; G21C3/00; G21C3/42; G21C3/58; G21C3/62; G21C3/623; Y; Y02; Y02E; Y02E30/00; Y02E30/30
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |