US3102832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic sheets of low aluminum-iron alloys
Assignee: Westinghouse Electric Corp
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Filing: 1958-04-30
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Granted: 1963-09-03
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Expires: 1978-04-30
Abstract
No abstract record available.
Inventors
- 👤 Paul A Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:19
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/16; C; C21; C21D; C21D8/00; C21D8/12; C21D8/1244; C21D8/1272; C22; C22C; C22C38/00; C22C38/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A METHOD OF PRODUCING MAGNETIC SHEET CHARACTERIZED BY A HIGH MAXIMUM PERMEABILITY, A HIGH MAGNETIC SATURATION INDUCTION AND AT LEAST 50 PERCENT OF ITS GRAINS HAVING A CUBE-ON-FACE ORIENTATION WHICH COMPRISES COLD ROLLING WITHOUT ANY INTERMEDIATE ANNEALING A HOT-ROLLED ALUMINUM-IRON ALLOY PLATE OF A THICKNESS OF ABOUT 0.40 TO 0.75 INCH, WHICH ALLOY CONSISTS ESSENTIALLY OF ALUMINUM IN AN AMOUNT SUFFICIENT TO PREVENT ALPHA-GAMMA TRANSFORMATION, THE ALUMINUM BEING PRESENT IN AN AMOUNT OF FROM ABOUT 1 PERCENT BUT NOT IN EXCESS OF ABOUT 1.5 WEIGHT PERCENT AND THE REMAINDER IRON, TO A SHEET OF A THICKNESS OF 2 TO 30 MILS, ANNEALING THE RESULTING SHEET IN A PROTECTIVE ATMOSPHERE AT A TEMPERATURE OF ABOUT 650* TO 800*C., AND THEN FURTHER ANNEALING THE SHEET IN A PROTECTTIVE ATMOSPHERE AT A TEMPERATURE OF ABOUT 950* TO 1250*C.
Claim 2
Independent Claim
135 words
A METHOD OF PRODUCING MAGNETIC SHEET CHARACTERIZED BY A HIGH MAXIMUM PERMEABILITY, A HIGH MAGNETIC SATURATION INDUCTION AND AT LEAST 50 PERCENT OF ITS GRAINS HAVING A CUBE-ON-FACE ORIENTATION WHICH COMPRISES COLD ROLLING WITHOUT ANY INTERMEDIATE ANNEALING A HOT-ROLLED ALUMINUM-IRON ALLOY PLATE OF A THICKNESS OF ABOUT 0.40 TO 0.75 INCH, WHICH ALLOY CONSISTS ESSENTIALLY OF ALUMINUM IN AN AMOUNT SUFFICIENT TO PREVENT ALPHA-GAMMA TRANSFORMATION, THE ALUMINUM BEING PRESENT IN AN AMOUNT OF FROM ABOUT 1 PERCENT BUT NOT IN EXCESS OF ABOUT 1.5 WEIGHT PERCENT AND THE REMAINDER IRON, TO A SHEET OF A THICKNESS OF 2 TO 30 MILS, ANNEALING THE RESULTING SHEET IN A PROTECTIVE ATMOSPHERE AT A TEMPERATURE OF ABOUT 650* TO 800*C., AND THEN FURTHER ANNEALING THE SHEET IN A PROTECTTIVE ATMOSPHERE AT A TEMPERATURE OF ABOUT 950* TO 1250*C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |