Patent US3978253A successfully refreshed from Google Patents.
US3978253A
Expired / Lapsed
US
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Method of applying a protective coating to a body
Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1972-03-16
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Granted: 1976-08-31
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Expires: 1992-03-16
Abstract
Abstract A protective coating is applied to a eutectic or near-eutectic alloy which contains at least one continuously multi-ply connected crystalline phase and at least one other phase which may be continuous or non-continuous, by removing from the surface of said alloy, one or more of the phases, such that at least one continuous phase will remain unaffected, so as to roughen said alloy surface, and thereafter coating said surface with a protective coating.
Inventors
- 👤 Peter Sahm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:46
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07; C23; C23C; C23C10/00; C23C10/02; C23C14/00; C23C14/02; C23C14/021; C23C4/00; C23C4/02; C25; C25F; C25F3/00; C25F3/02; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12472; Y10T428/12493; Y10T428/12674; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
63 words
A method of applying a protective coating to a eutectic or near eutectic alloy which contains a continuously multi-ply connected crystalline phase, and at least one other non-continuous phase, which comprises completely removing from the surface of said alloy, one or more of said non-continuous phases such that a roughened alloy surface, having the continuous phase remain and thereafter coating said roughened surface.
Claim 2
Independent Claim
63 words
A method of applying a protective coating to a eutectic or near eutectic alloy which contains a continuously multi-ply connected crystalline phase, and at least one other non-continuous phase, which comprises completely removing from the surface of said alloy, one or more of said non-continuous phases such that a roughened alloy surface, having the continuous phase remain and thereafter coating said roughened surface.
Claim 3
Dependent Claim
25 words
The method according to claim 1, characterized in that the alloy contains 50 - 70% cobalt, 30 - 50% chromium, and 2 - 4% carbon.
Claim 4
Dependent Claim
21 words
A method according to claim 1, characterized in that the protective coating consists of an alloy containing predominantly silicon or chromium.
Claim 5
Dependent Claim
18 words
A method according to claim 1, characterized in that the protective coating is applied by chemical vapor deposition.
Claim 6
Dependent Claim
16 words
The method according to claim 1, characterized in that the protective coating is applied by electrodeposition.
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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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |