US3341368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum-manganese alloys
Assignee: Individual
•
Filing: 1964-02-13
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Granted: 1967-09-12
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Expires: 1984-02-13
Abstract
No abstract record available.
Inventors
- 👤 Chevigny Raymond
- 👤 Mercier Jean Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:35
CPC Classifications
C; C22; C22F; C22F1/00; C22C; C22C1/00; C22C1/02; C22C21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN THE METHOD OF REDUCING HORNS DURING THE PROCESSING OF ALUMINUM-MANGANESE ALLOYS BY STAMPING AND BY MANDREL FORMING COMPRISING THE STEPS OF CASTING PLATES OF THE ALUMINUM-MANGANESE ALLOY, SAID ALLOY CONSISTING ESSENTIALLY OF FROM 0.8 TO 2.0 PERCENT BY WEIGHT MANGANESE, UP TO 0.4 PERCENT BY WEIGHT IRON, UP TO 0.1 PERCENT COPPER, AND CONTAINING 0.2 TO 0.4 PERCENT BY WEIGHT SILICON WITH THE BALANCE ALUMINUM, HEATING THE CAST PLATES FOR FROM 36 TO 48 HOURS AT A TEMPERATURE OF ABOUT 600 TO 620*C., AND SHAPING THE PLATES INTO SHEETS AFTER SAID HEAT TREATMENT WHEREBY THE SHAPING OPERATION TAKES PLACE WITHOUT ANY COOLING TO AMBIENT TEMPERATURE OCCURRING BETWEEN THE HEAT TREATMENT AND THE SHAPING OPERATION.
Claim 2
Dependent Claim
115 words
IN THE METHOD OF REDUCING HORNS DURING THE PROCESSING OF ALUMINUM-MANGANESE ALLOYS BY STAMPING AND BY MANDREL FORMING COMPRISING THE STEPS OF CASTING PLATES OF THE ALUMINUM-MANGANESE ALLOY, SAID ALLOY CONSISTING ESSENTIALLY OF FROM 0.8 TO 2.0 PERCENT BY WEIGHT MANGANESE, UP TO 0.4 PERCENT BY WEIGHT IRON, UP TO 0.1 PERCENT COPPER, AND CONTAINING 0.2 TO 0.4 PERCENT BY WEIGHT SILICON WITH THE BALANCE ALUMINUM, HEATING THE CAST PLATES FOR FROM 36 TO 48 HOURS AT A TEMPERATURE OF ABOUT 600 TO 620*C., AND SHAPING THE PLATES INTO SHEETS AFTER SAID HEAT TREATMENT WHEREBY THE SHAPING OPERATION TAKES PLACE WITHOUT ANY COOLING TO AMBIENT TEMPERATURE OCCURRING BETWEEN THE HEAT TREATMENT AND THE SHAPING OPERATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |