Patent US3104189A successfully refreshed from Google Patents.
US3104189A
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US
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Aluminum alloy system
Assignee: Reynolds Metals Co
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Filing: 1960-10-17
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Granted: 1963-09-17
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Expires: 1980-10-17
Abstract
No abstract record available.
Inventors
- 👤 Wagner Nicholas Alfon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:16
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/06; C22C21/08; B; B21; B21C; B21C23/00; B21C23/002
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
THE PROCESS WHICH COMPRISES SOLUTION HEAT TREATING A WROUGHT ALUMINUM BASE ALLOY CONTAINING MAGNESIUM AND SILICON AS ESSENTIAL COMPONENTS, CHARACTERIZED BY A HIGH MECHANICAL STRENGTH AND BRIGHTENS OR SURFACE UPON EXTRUSION, AND CONTAINING FROM 0.40% TO 0.80% SILICON, 0.70%-1.10% MAGNESIUM, WITH A MAXIMUM OF 0.50% IRON 0.20% COPPER, 0.10% MANGANESE, 0.10% CHROMIUM, 0.10% RITANIUM, 25% ZINC 0.05% EACH OF OTHER ELEMENTS, AND 0.15% TOTAL OF OTHER ELEMENTS, THE BALANCE BEING ALUMINUM, SAID ALLOY CONTAINING SILICON IN SLIGHT EXCESS OVER THAT REQUIRED TO COMBINE STOICHIOMETRICALLY WITH THE MAGNESIUM PRESENT TO FORM MAGNESIUM SILICIDE, AT A TEMPERATURE BETWEEN ABOUT 900*F. AND ABOUT 1000* F. AND FLUID QUENCHING SAID ALLOY.
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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |