US3199979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum base casting alloys and method
Assignee: WILLIAM F JOBBINS Inc
•
Filing: 1961-10-27
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Granted: 1965-08-10
•
Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
- 👤 Martin Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:27
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AN ALUMINUM BASE CASTING ALLOY CONSISTING ESSENTIALLY OF AT LEAST THREE PERCENT SILICON AND INCLUDING CALCIUM INTRODUCED AS ELEMENTAL CALCIUM IN AN AMOUNT GREATER THAN .002% BUT LESS THAN .02%, AT LEAST ONE OF THE RARE EARTH METALS IN AN AMOUNT GREATER THAN .002% BUT LESS THAN .02%, AND THE BALANCE ALUMINUM.
Claim 2
Dependent Claim
52 words
AN ALUMINUM BASE CASTING ALLOY CONSISTING ESSENTIALLY OF AT LEAST THREE PERCENT SILICON AND INCLUDING CALCIUM INTRODUCED AS ELEMENTAL CALCIUM IN AN AMOUNT GREATER THAN .002% BUT LESS THAN .02%, AT LEAST ONE OF THE RARE EARTH METALS IN AN AMOUNT GREATER THAN .002% BUT LESS THAN .02%, AND THE BALANCE ALUMINUM.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |