US3754903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature oxidation resistant coating alloy
Assignee: RTX Corp
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Filing: 1970-09-15
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Granted: 1973-08-28
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Expires: 1990-09-15
Abstract
Abstract A coating alloy for the gas turbine engine super-alloys is described which consists primarily of nickel, aluminum and a reactive metal such as yttrium, particularly at the composition, by weight, 14-30 percent aluminum, 0.01-0.5 percent reactive metal balance nickel. A preferred embodiment also includes 15-45 weight percent chromium.
Inventors
- 👤 G Goward
- 👤 D Boone
- 👤 F Pettit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:53
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/052; C22C19/007; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/16; C23C4/00; C23C4/04; C23C4/06; C23C4/073; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854; Y10T428/12861; Y10T428/12944
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
24 words
An oxidation-erosion resistant coating alloy which consists essentially of, by weight, 15-20 percent aluminum, 20-35 percent chromium, 0.05-0.3 percent yttrium, balance essentially nickel. >
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |