US2855328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coating metal base with silicon and heating to form metalsilicon surfacelayer
Assignee: Individual
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Filing: 1956-06-08
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Granted: 1958-10-07
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Expires: 1976-06-08
Abstract
No abstract record available.
Inventors
- 👤 Long Roger Alden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:20
CPC Classifications
C; C23; C23C; C23C12/00; C23C10/00; C23C10/28; C23C10/34; C23C10/36; C23C10/44; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/941; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12674; Y10T428/12771; Y10T428/12806; Y10T428/12826
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE PROCESS OF COATING FABRICATED MOLYBDENUM WITH SILICON COMPOUNDS WHICH COMPRISES PACKING THE MOLYBDENUM IN A RETORT WITH POWDERED SILICON CARBIDE, HEATING THE RETORT TO A TEMPERATURE BETWEEN 1800*F. AND 2200* F. IN A MOVING ATMOSPHERE OF CHLORINE FOR A TIME PERIOD SUFFICIENT TO DECOMPOSE THE CARBIDE AND PRODUCE SILICON DIFFUSION IN THE SURFACE MOLYBDENUM, REMOVING THE SILICON-COATED MOLYBDENUM IN A FURNACE HAVING AN INERT SILICON-COATED MOLYBDENUM IN A FURNACE HAVING AN INERT OF VACUOUS ATMOSPHERE TO A TEMPERATURE BETWEEN 1800* F. AND 2400*F. AND HOLDING THE SILICON-COATED MOLYBDENUM IN SAID TEMPERATURE RANGE UNTIL OVER FIFTY PERCENT OF THE SURFACE SILICON IS CONVERTED INTO A SILICIDE OF MOLYBDENUM.
Claim 2
Dependent Claim
108 words
THE PROCESS OF COATING FABRICATED MOLYBDENUM WITH SILICON COMPOUNDS WHICH COMPRISES PACKING THE MOLYBDENUM IN A RETORT WITH POWDERED SILICON CARBIDE, HEATING THE RETORT TO A TEMPERATURE BETWEEN 1800*F. AND 2200* F. IN A MOVING ATMOSPHERE OF CHLORINE FOR A TIME PERIOD SUFFICIENT TO DECOMPOSE THE CARBIDE AND PRODUCE SILICON DIFFUSION IN THE SURFACE MOLYBDENUM, REMOVING THE SILICON-COATED MOLYBDENUM IN A FURNACE HAVING AN INERT SILICON-COATED MOLYBDENUM IN A FURNACE HAVING AN INERT OF VACUOUS ATMOSPHERE TO A TEMPERATURE BETWEEN 1800* F. AND 2400*F. AND HOLDING THE SILICON-COATED MOLYBDENUM IN SAID TEMPERATURE RANGE UNTIL OVER FIFTY PERCENT OF THE SURFACE SILICON IS CONVERTED INTO A SILICIDE OF MOLYBDENUM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |