US3406227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating low permeability nuclear fuel bodies
Assignee: Gulf General Atomic Inc
•
Filing: 1962-10-19
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Granted: 1968-10-15
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Expires: 1982-10-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Geoffrey R Tully
- 👤 Walter V Goeddel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:47
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; G21C3/626; G21C3/64; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A METHOD OF MAKING A SOLID, HIGH TEMPERATURES, NUCLEAR FUEL BODY, WHICH METHOD COMPRISES THE STEPS OF COMPACTING A MIXTURE OF FINELY DIVIDED GRAPHITE AND DISCRETE NUCLEAR FUEL CARBIDE PARTICLES, EACH OF WHICH PARTICLES IS COATED WITH A PROTECTEIVE LAYER OF PYROLYTIC CARBON, INTO A SOLID FUEL BODY HAVING A MAXIMUM PORE DIAMETER OF ABOUT 2 MICRONS, IMPREGNATING A PORTION OF THE PORES OF SAID FUEL BODY WITH A POLYMERZABLE SUBSTANCE, CURING CARBONIZING SAID SUBSTANCE WITHIN SAID PORES, REPEATING SAID IMPREGNATING, CURING AND CARBONIZING STEPS UNTIL THE GAS PERMEABILITY OF SAID FUEL BODY IS SUBSTANTIALLY REDUCED, AND THEREAFTER HEAT-TREATING SAID CARBONIZED SUBSTANCE WITHIN THE PORES OF SAID FUEL BODY TO PRODUCE A FUEL BODY HAVING EXCELLENT FISSION PRODUCT RETENTION.
Claim 2
Independent Claim
119 words
A METHOD OF MAKING A SOLID, HIGH TEMPERATURES, NUCLEAR FUEL BODY, WHICH METHOD COMPRISES THE STEPS OF COMPACTING A MIXTURE OF FINELY DIVIDED GRAPHITE AND DISCRETE NUCLEAR FUEL CARBIDE PARTICLES, EACH OF WHICH PARTICLES IS COATED WITH A PROTECTEIVE LAYER OF PYROLYTIC CARBON, INTO A SOLID FUEL BODY HAVING A MAXIMUM PORE DIAMETER OF ABOUT 2 MICRONS, IMPREGNATING A PORTION OF THE PORES OF SAID FUEL BODY WITH A POLYMERZABLE SUBSTANCE, CURING CARBONIZING SAID SUBSTANCE WITHIN SAID PORES, REPEATING SAID IMPREGNATING, CURING AND CARBONIZING STEPS UNTIL THE GAS PERMEABILITY OF SAID FUEL BODY IS SUBSTANTIALLY REDUCED, AND THEREAFTER HEAT-TREATING SAID CARBONIZED SUBSTANCE WITHIN THE PORES OF SAID FUEL BODY TO PRODUCE A FUEL BODY HAVING EXCELLENT FISSION PRODUCT RETENTION.
References Cited (Backward Citations)
GB850016A
Cited
US3031389A
Cited
GB878927A
Cited
US3166614A
Cited
US3018238A
Cited
US3146173A
Cited
US3212989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |