Patent US3554783A successfully refreshed from Google Patents.
US3554783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low temperature method for coating nuclear fuels with multiple carbon coatings
Assignee: United States Atomic Energy Commission
•
Filing: 1968-11-04
•
Granted: 1971-01-12
•
Expires: 1988-11-04
Abstract
Abstract A THIN, IMPERVIOUS, CARBON COATING IS DEPOSITED ONTO A POROUS BUFFER COATING IN PYROLYTICALLY COATED FUEL MICROSPHERES TO PREVENT DIFFUSION OF THE COATING GAS INTO THE POROUS BUFFER COATING DURING SUBSEQNENT COATING OPERATIONS BY INITIATING THE DEPOSITION AT A TEMPERATURE OF ABOUT 1500*C. AND IMMEDIATELY THEREAFTER REDUCING THE DEPOSITION TEMPERATURE TO WITHIN THE RANGE OF 1100*1300*C. TO COMPLETE DEPOSITION OF AN OUTER, HIGH DENSITY PYROLYTIC CARBON COATING.
Inventors
- 👤 Hans Beutler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:46
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; G21C3/626; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |