US3128176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum silicon casting alloys
Assignee: Individual
•
Filing: 1961-06-14
•
Granted: 1964-04-07
•
Expires: 1981-06-14
Abstract
No abstract record available.
Inventors
- 👤 Martin Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:52
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
AN ALUMINUM DIE CASTING ALLOY CONSISTING OF ESSENTIALLY OF FROM 3 TO 13 PERCENT SILICON AND CALCIUM INTRODUCED AS ELEMENTAL CALCIUM IN AN AMOUNT WITHIN THE RANGE OF 0.004 TO 0.015 PERCENT, THE BALANCE BEING ESSENTIALLY ALUMINUM.
Claim 2
Dependent Claim
37 words
AN ALUMINUM DIE CASTING ALLOY CONSISTING OF ESSENTIALLY OF FROM 3 TO 13 PERCENT SILICON AND CALCIUM INTRODUCED AS ELEMENTAL CALCIUM IN AN AMOUNT WITHIN THE RANGE OF 0.004 TO 0.015 PERCENT, THE BALANCE BEING ESSENTIALLY ALUMINUM.
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |