US2854353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating refractory metals with silicon and boron
Assignee: Clevite Corp
•
Filing: 1955-08-08
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Granted: 1958-09-30
•
Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur D Schwope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:26
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/24; C23C16/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD OF COATING A METAL, SELECTED FROM THE GROUP CONSISTING OF HYDRIDABLE REFRACTORY METALS AND HYDRIABLE ALLOYS THEREOF WITH AN ELEMENT WHICH FORMS A VOLATILE HALIDE, COMPRISING PASSING A VOLATILIZED HALIDE OF SAID ELEMENT IN A STREAM OF INERT GAS IN CONTACT WITH SAID METAL, AT LEAST PARTIALLY IN HYDRIDE FORM AND MAINTAINED AT A TEMPERATURE AT LEAST AS HIGH AS THE DECOMPOSITION TEMPERATURE OF SAID HYDRIDE TO THEREBY LIBERATE HYDROGEN THEREFROM AND REDUCE SAID HALIDE, IN SITU, AND MAINTAINING SAID METAL IN CONTACT WITH SAID STREAM FOR AT LEAST 5 MINUTES AND UNTIL A COATING OF SAID ELEMENT IS FORMED ON THE SURFACE THEREOF RESULTING FROM THE REDUCTION OF THE HALIDE.
Claim 2
Independent Claim
113 words
A METHOD OF COATING A METAL, SELECTED FROM THE GROUP CONSISTING OF HYDRIDABLE REFRACTORY METALS AND HYDRIABLE ALLOYS THEREOF WITH AN ELEMENT WHICH FORMS A VOLATILE HALIDE, COMPRISING PASSING A VOLATILIZED HALIDE OF SAID ELEMENT IN A STREAM OF INERT GAS IN CONTACT WITH SAID METAL, AT LEAST PARTIALLY IN HYDRIDE FORM AND MAINTAINED AT A TEMPERATURE AT LEAST AS HIGH AS THE DECOMPOSITION TEMPERATURE OF SAID HYDRIDE TO THEREBY LIBERATE HYDROGEN THEREFROM AND REDUCE SAID HALIDE, IN SITU, AND MAINTAINING SAID METAL IN CONTACT WITH SAID STREAM FOR AT LEAST 5 MINUTES AND UNTIL A COATING OF SAID ELEMENT IS FORMED ON THE SURFACE THEREOF RESULTING FROM THE REDUCTION OF THE HALIDE.
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) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |