Patent US4273989A successfully refreshed from Google Patents.
Patent US3225437A successfully refreshed from Google Patents.
US3225437A
Expired / Lapsed
US
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Fluid-tight closure of fuel elements sheathed with partially oxidized powdered metals
Assignee: Individual
•
Filing: 1961-10-06
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Granted: 1965-12-28
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Expires: 1981-10-06
Abstract
No abstract record available.
Inventors
- 👤 Stohr Jacques Andre
- 👤 Bridoux Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:09
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/06; G21C3/10; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A PROCESS FOR FORMING A FLUID-TIGHT CLOSURE OF A NUCLEAR FUEL ELEMENT SHEATH COMPOSED OF CONSOLIDATED, SLIGHTLY OXIDIZED, POWDERED METAL, COMPRISING THE STEPS OF INSERTING A CONCAVE PLUG OF CONSOLIDATED, SLIGHTLY OXIDIZED, POWDERED METAL INTO SAID FUEL ELEMENT SHEATH, COVERING SAID PLUG AND THE END OF SAID SHEATH WITH A CON-
Claim 2
Dependent Claim
51 words
A PROCESS FOR FORMING A FLUID-TIGHT CLOSURE OF A NUCLEAR FUEL ELEMENT SHEATH COMPOSED OF CONSOLIDATED, SLIGHTLY OXIDIZED, POWDERED METAL, COMPRISING THE STEPS OF INSERTING A CONCAVE PLUG OF CONSOLIDATED, SLIGHTLY OXIDIZED, POWDERED METAL INTO SAID FUEL ELEMENT SHEATH, COVERING SAID PLUG AND THE END OF SAID SHEATH WITH A CON-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |