US3748172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnesium based coating for the sacrificial protection of metals
Assignee: Chromalloy American Corp
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Filing: 1971-05-17
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Granted: 1973-07-24
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Expires: 1991-05-17
Abstract
Abstract A METHOD IS PROVIDED FOR IMPROVING THE CORROSION RESISTANCE OF MATERIAL SUBSTRATES. THE METHOD IS PARTICULARLY APPLICABLE TO THE PROTECTION OF METAL SUBSTRATES, SUCH AS FERROUS METAL ARTICLES, AMONG OTHER METALS, AND, IN PARTICULAR, TO THE PROTECTION OF LOW ALLOY STEEL GAS TURBINE ENGINE COMPONENTS FOR AIRCRAFT IN WHICH THE SURFACE IS PROVIDED WITH AN ADHERENT PROTECTIVE LAYER OF A SACRIFICAL COATING RICH IN MAGNESIUM AND ALSO CONTAINING SILICON, OXYGEN AND OPTIONALLY IRON. THE COATING IS CHARACTERIZED BY THE PRESENCE OF MAGNESIUM SILICIDE AS A MAJOR ACTIVE CONSTITUENT.
Inventors
- 👤 R Blize
- 👤 K Speirs
- 👤 M Weinstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:34
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C23C10/52; C23C12/00; C23C12/02; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12785; Y10T428/12792
Claims Analysis
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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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |