Patent US3297435A successfully refreshed from Google Patents.
US3297435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of heat-treatable aluminum casting alloy
Assignee: Huntington Alloys Corp
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Filing: 1963-03-22
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Granted: 1967-01-10
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Expires: 1983-03-22
Abstract
No abstract record available.
Inventors
- 👤 James E Hanafee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:01
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/66; C; C07; C07D; C07D301/00; C07D301/02; C07D301/03; C07D301/04; C07D301/08; C07D301/10; C22; C22C; C22C21/00; C22C21/02; H; H03; H03K; H03K5/00; H03K5/01; H03K5/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
A HEAT-TREATABLE, IRON-CONTAINING ALUMINUM CASTING ALLOY CONSITING ESSENTIALLY, BY WEIGHT, OF 4% TO 9% NICKEL, 5% TO 25% SILICON, UP TO 1% COPPER, UP TO 1% MAGNESIUM, THE SUM OF COPPER AND MAGNESIUM BEING BETWEEN 0.2% AND 2%, IRON IN AN AMOUNT WHICH IS CORRELATED TO NICKEL, SILICON AND COPPER PLUS MAGNESIUM AND WHICH IS LESS THAN
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |