Patent US3759787A successfully refreshed from Google Patents.
US3759787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear fuel elements
Assignee: National Aeronautics and Space Administration
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Filing: 1960-09-30
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Granted: 1973-09-18
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Expires: 1980-09-30
Abstract
Abstract 1. A METHOD OF PROVIDING A TUNGSTEN CLADDING FOR TUNGSTEIN-URANIUM DIOXIDE NUCLEAR FUEL PLATES COMPRISING COVERING A TUNGSTEN-UO2 POWDER COMPACT WITH POWDERED TUNGSTEN, PRESSING AT A PRESSURE WITHIN THE RANGE FROM 5000 POUNDS PER SQUARE INCH AND 10,000 POUNDS PER SQUARE INCH SAID TUNGSTEN COVERED COMPACT, HEATING SAID PRESSED ELEMENT TO A TEMPERATURE OF APPROXIMATELY 2800*F. AND FINALLY SUBJECTING SAID ELEMENT TO CONTINUOUS SUCCESSIVE STEPS OF HEATING TO A TEMPERATURE OF AT LEAST 3500*F. AND ROLLING UNTIL THE GRAINS OF THE TUNGSTEN IN THE CLAD HAVE AN AVERAGE LENGTH OF 0.010 INCH.
Inventors
- 👤 Donald G Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:07
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/30; G21C3/36; G21C3/02; G21C3/04; G21C3/06; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A METHOD OF PROVIDING A TUNGSTEN CLADDING FOR TUNGSTEIN-URANIUM DIOXIDE NUCLEAR FUEL PLATES COMPRISING COVERING A TUNGSTEN-UO2 POWDER COMPACT WITH POWDERED TUNGSTEN, PRESSING AT A PRESSURE WITHIN THE RANGE FROM 5000 POUNDS PER SQUARE INCH AND 10,000 POUNDS PER SQUARE INCH SAID TUNGSTEN COVERED COMPACT, HEATING SAID PRESSED ELEMENT TO A TEMPERATURE OF APPROXIMATELY 2800*F. AND FINALLY SUBJECTING SAID ELEMENT TO CONTINUOUS SUCCESSIVE STEPS OF HEATING TO A TEMPERATURE OF AT LEAST 3500*F. AND ROLLING UNTIL THE GRAINS OF THE TUNGSTEN IN THE CLAD HAVE AN AVERAGE LENGTH OF 0.010 INCH.
Claim 2
Independent Claim
91 words
A METHOD OF PROVIDING A TUNGSTEN CLADDING FOR TUNGSTEIN-URANIUM DIOXIDE NUCLEAR FUEL PLATES COMPRISING COVERING A TUNGSTEN-UO2 POWDER COMPACT WITH POWDERED TUNGSTEN, PRESSING AT A PRESSURE WITHIN THE RANGE FROM 5000 POUNDS PER SQUARE INCH AND 10,000 POUNDS PER SQUARE INCH SAID TUNGSTEN COVERED COMPACT, HEATING SAID PRESSED ELEMENT TO A TEMPERATURE OF APPROXIMATELY 2800*F. AND FINALLY SUBJECTING SAID ELEMENT TO CONTINUOUS SUCCESSIVE STEPS OF HEATING TO A TEMPERATURE OF AT LEAST 3500*F. AND ROLLING UNTIL THE GRAINS OF THE TUNGSTEN IN THE CLAD HAVE AN AVERAGE LENGTH OF 0.010 INCH.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |