US2801942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rendering an aluminum-iron alloy ductile
Assignee: Individual
•
Filing: 1954-02-26
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Granted: 1957-08-06
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Expires: 1974-02-26
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Nachman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:44
CPC Classifications
C; C21; C21D; C21D8/00; C21D8/12; C21D8/1216; C21D8/1227; C21D8/1222
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
THE METHOD OF MAKIANG MAGNETICALLY ISOTROPIC SHEETS OR TAPES FROM A MELT CONTAINING FROM 5 TO 16 PERCENT ALUMINUM AND 95 TO 84 PERCENT IRON, WHICH CONSISTS OF CASTING THE MELT INTO RELATIVELY THICH SHEETS, HOT WORKING THE SHEETS TO A FIRST PREDETERMINED THICKNESS, COLD WORKING SHEETS TO A SECOND PREDETERMINED THICKNESS LESS THAN SAID FIRST PREDETERMINED THICKNESSS, AND THEREAFTER REDUCING THE SHEETS TO A DESIRED THICKNESS BY SUBJECTING THE SHEETS TO ALTERNATE OPERATIONS OF WORKING AT ROOM TEMPERATURE AND HEATING TO A TEMPERATURE WITHIN THE ORDERDISORDER TEMPERATURE RANGE.
References Cited (Backward Citations)
US2300336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |