US2665997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing highly refractory bodies
Assignee: Fansteel Inc
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Filing: 1950-03-18
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Granted: 1954-01-12
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Expires: 1970-03-18
Abstract
No abstract record available.
Inventors
- 👤 Ivor E Campbell
- 👤 Bruce W Gonser
- 👤 Carroll F Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:04
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE METHOD OF FORMING REFRACTORY METAL BODIES RESISTANT TO OXIDATION AT TEMPERATURES ABOVE ABOUT 1000* C., WHICH COMPRISES HEATING A REFRACTORY METAL BODY TO A TEMPERATURE OF AT LEAST THE MELTING POINT OF SILICON, DEPOSITING SILICON ON THE METAL BODY BY PASSING A MIXTURE OF HYDROGEN AND VAPORS OF A SILCON HALIDE OVER THE METAL BODY AND REACTING THE DEPOSITED SILICON WITH THE SURFACE PORTIONS OF THE METAL BODY BY MAINTAINING THE METAL BODY AT THE ELEVATED TEMPERATURE OF ATLEAST THE MELTING POINT OF SILICON, TO FORM A COATING ON THE SAID BODY OF AN ALLOY OR INTERMETALLIC COMPOUND OF THE REFRACTORY METAL AND SILICON.
Claim 2
Independent Claim
105 words
THE METHOD OF FORMING REFRACTORY METAL BODIES RESISTANT TO OXIDATION AT TEMPERATURES ABOVE ABOUT 1000* C., WHICH COMPRISES HEATING A REFRACTORY METAL BODY TO A TEMPERATURE OF AT LEAST THE MELTING POINT OF SILICON, DEPOSITING SILICON ON THE METAL BODY BY PASSING A MIXTURE OF HYDROGEN AND VAPORS OF A SILCON HALIDE OVER THE METAL BODY AND REACTING THE DEPOSITED SILICON WITH THE SURFACE PORTIONS OF THE METAL BODY BY MAINTAINING THE METAL BODY AT THE ELEVATED TEMPERATURE OF ATLEAST THE MELTING POINT OF SILICON, TO FORM A COATING ON THE SAID BODY OF AN ALLOY OR INTERMETALLIC COMPOUND OF THE REFRACTORY METAL AND SILICON.
References Cited (Backward Citations)
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Cited
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US2157902A
Cited
US2306222A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |