US2830922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making cast magnetic aluminum-iron alloys and product thereof
Assignee: General Electric Co
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Filing: 1953-01-30
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Granted: 1958-04-15
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Expires: 1973-01-30
Abstract
No abstract record available.
Inventors
- 👤 Robert D Ahles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:54
CPC Classifications
C; C21; C21D; C21D8/00; C21D8/12; C21D8/1205; C22; C22C; C22C38/00; C22C38/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
71 words
THE METHOD OF OBTAINING GOO<D MAGNETIC PROPERTIES IN CAST SUBSTANTIALLY CARBON- AND SILCION-FREE MAGNETIC ALLOYS CONSISTING ESSENTIALLY OF 0.8 TO 6.2 PERCENT ALLUMINUM, A MAXIMUM OF 0.05 PERCENT CARBON, A MAXIMUM OF 0.35 PERCENT SILICON AND THE REMAINDER IRON, WHICH CONSISTS OF THE STEPS OF CASTING THE ALLOY AND THEN SUBJECTING THE CAST ALLOY TO A HEAT TREATMENT OF ABOUT 900* TO 1000*C. FOR A PERIOD OF FOUR TO EIGHT HOURS.
References Cited (Backward Citations)
CH189195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |