US3560269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-earing aluminum alloy sheet
Assignee: Alcoa Corp
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Filing: 1967-12-07
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Granted: 1971-02-02
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Expires: 1987-12-07
Abstract
Abstract ALUMINUM ALLOY SHEET CONTAINING 4 TO 5% MAGNESIUM, 0.2 TO 0.7% MANGANESE, THE BALANCE BEING ESSENTIALLY ALUMINUM IN THE STATE RESULTING FROM A COLD ROLLING REDUCTION WHICH EFFECTS A REDUCTION IN THE THICKNESS OF AT LEAST 85% AND SUBSEQUENT ANNEALING POSSES A HIGH LEVEL A STRENGTH TOGETHER WITH THE CAPABILITY OF BEING DRAWN INTO CUPS WHICH EXHIBIT SUBSTANTIALLY NO EARING
Inventors
- 👤 William A Anderson
- 👤 John K Mcbride
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:25
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/06
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |