Patent US3762885A successfully refreshed from Google Patents.
US3762885A
Expired / Lapsed
US
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Diffusion coating of metals
Assignee: Chromalloy American Corp
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Filing: 1972-02-07
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Granted: 1973-10-02
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Expires: 1992-02-07
Abstract
Abstract An article of manufacture is provided comprising a thermally aluminum-coated structural element of chromium-containing steel having a substantially uniform diffused layer of aluminum on the substrate thereof, said substrate being characterized by compressive stresses introduced by shot peening before applying the coating, the compressive stresses at the substrate together with the overlying diffused layer of aluminum providing improved resistance to fatigue coupled with improved resistance to corrosion and oxidation.
Inventors
- 👤 K Speirs
- 👤 M Weinstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:02
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/02; C21; C21D; C21D7/00; C21D7/02; C21D7/04; C21D7/06; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12465; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757
Claims Analysis
Total Claims: 0
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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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |