US3582406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal treatment of aluminum-magnesium alloy for improvement of stress-corrosion properties
Assignee: Olin Corp
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Filing: 1968-10-30
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Granted: 1971-06-01
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Expires: 1988-10-30
Abstract
Abstract A PROCESS FOR INCREASING THE STRESS CORROSION RESISTANCE OF THE ALUMIUM-MAGNESIUM ALLOYS WHICH COMPRISES PROVIDING AN ALUMINUM BASE ALLOY IN REDUCED FORM CONTAINING FROM 3.0% TO 10.0% MAGNESIUM, BALANCE ESSENTIALLY ALUMINUM, HEATING SAID ALLOY AT A RATE OF 50*F. PER HOUR OR LESS TO A TEMPERATURE OF 600* TO 800*F., HOLDING SAID ALLOYS AT SAID TEMPERATURE FOR 5 MINUTES TO 24 HOURS, AND COOLING SAID ALLOYS AT A RATE 500*F. PER HOUR OR LESS.
Inventors
- 👤 Francis P Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:44
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/06; C22F; C22F1/00; C22F1/04; C22F1/047
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |