US2823995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum base alloy die casting
Assignee: —
•
Filing: —
•
Granted: 1958-02-18
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Expires: 1975-02-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:40
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/02; C22C21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
AN ALUMINUM BASE ALLOY DIE CASTING HAVING A COMPOSITION CONSISTING ESSENTIALLY OF, ALUMINUM, 6 TO 11% SILICON, 0.1 TO 0.6% CHROMIUM AND 0.01 TO 0.10% BERYLLIUM, WITH A MAXIMUM OF 0.2% COPPER, 2% IRON AND 0.1% EACH OF MANGANESE, NICKEL, ZINC AND TIN AS IMPURITIES, SAID DIE CASTING IN THE AS-CAST CONDITION BEING CHARACTERIZED BY A MINIMUM TENSILE STRENGTH OF 41,000 P. S. I. AND A MINIMUM ELONGATION OF 5.0%.
Claim 2
Dependent Claim
70 words
AN ALUMINUM BASE ALLOY DIE CASTING HAVING A COMPOSITION CONSISTING ESSENTIALLY OF, ALUMINUM, 6 TO 11% SILICON, 0.1 TO 0.6% CHROMIUM AND 0.01 TO 0.10% BERYLLIUM, WITH A MAXIMUM OF 0.2% COPPER, 2% IRON AND 0.1% EACH OF MANGANESE, NICKEL, ZINC AND TIN AS IMPURITIES, SAID DIE CASTING IN THE AS-CAST CONDITION BEING CHARACTERIZED BY A MINIMUM TENSILE STRENGTH OF 41,000 P. S. I. AND A MINIMUM ELONGATION OF 5.0%.
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) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |