US2937115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic products of high aluminum iron alloys
Assignee: Westinghouse Electric Corp
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Filing: 1957-08-16
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Granted: 1960-05-17
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Expires: 1977-08-16
Abstract
No abstract record available.
Inventors
- 👤 Pavlovic Dusan
- 👤 Foster Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:25
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/16; C; C21; C21D; C21D1/00; C21D1/74; C21D8/00; C21D8/12; C22; C22C; C22C38/00; C22C38/06; C21D8/1244
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD FRO PROVIDING IMPROVED MAGNETIC PROPERTIES OF COERCIVE FORCE, REMANENCE, AND MAXIMUM PERMEABILITY IN AN ALUMINUM-IRON ALLOY SHEET WHICH COMPRISES HEATING IN THE PRESENCE OF AIR FOR AT LEAST ONE HALF HOUR A MAGNETIC ALLOY SHEET CONSISTING ESSENTIALLY OF 14 TO 17.5 WEIGHT PERCENT OF ALUMINUM AND THE REMAINDER IRON AT A TEMPERATURE OF FROM 800* C. TO 1200* C., AND THEN QUENCHING THE RESULTANT ANNEALED SHEET FROM A TEMPERATURE THAT IS ABOVE THAT AT WHICH AN ORDERING TRANSFORMATION OCCURS, WHEREIN THE STRUCTURE NORMALLY CHANGES TO FE3AL, TO ABOUT ROOM TEMPERATURES, THE QUENCHING SUPPRESSING THE ORDERING TRANSFORMATION.
Claim 2
Independent Claim
98 words
A METHOD FRO PROVIDING IMPROVED MAGNETIC PROPERTIES OF COERCIVE FORCE, REMANENCE, AND MAXIMUM PERMEABILITY IN AN ALUMINUM-IRON ALLOY SHEET WHICH COMPRISES HEATING IN THE PRESENCE OF AIR FOR AT LEAST ONE HALF HOUR A MAGNETIC ALLOY SHEET CONSISTING ESSENTIALLY OF 14 TO 17.5 WEIGHT PERCENT OF ALUMINUM AND THE REMAINDER IRON AT A TEMPERATURE OF FROM 800* C. TO 1200* C., AND THEN QUENCHING THE RESULTANT ANNEALED SHEET FROM A TEMPERATURE THAT IS ABOVE THAT AT WHICH AN ORDERING TRANSFORMATION OCCURS, WHEREIN THE STRUCTURE NORMALLY CHANGES TO FE3AL, TO ABOUT ROOM TEMPERATURES, THE QUENCHING SUPPRESSING THE ORDERING TRANSFORMATION.
References Cited (Backward Citations)
US2801942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |