Patent US3682759A successfully refreshed from Google Patents.
US3682759A
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Low density pyrolytic carbon coating process
Assignee: Praxair ST Technology Inc
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Filing: 1970-03-10
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Granted: 1972-08-08
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Expires: 1990-03-10
Abstract
Abstract A PROCESS FOR DEPOSTING A LOW DENSITY, HIGHLY POROUS CARBON COATING ON NUCLEAR REACTOR FUEL PARTICLES BY THE THERMAL DECOMPOSITION OF UNDILUTED EXOTHERMIC-TYPE CRACKING GASES WHEREIN TEMPERATURE CONTROL OF THE COATING PROCESS IS OBTAINED BY ALTERNATELY USING, AS THE PARTICLE FLUIDIZING MEDIUM, THE EXOTHERMIC-TYPE CRACKING GAS AND AN INERT GAS TO MAINTAIN THE TEMPERATURE OF THE REACTION ZONE BETWEEN ABOUT 1100*C. AND 1250*C.
Inventors
- 👤 Hans Beutler
- 👤 Ronald L Beatty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:01
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; B; B01; B01J; B01J2/00; B01J2/006; G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; G21C3/626; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |