Patent US3223602A successfully refreshed from Google Patents.
US3223602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iron-silicon alloys and treatment thereof
Assignee: General Electric Co
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Filing: 1961-05-17
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Granted: 1965-12-14
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Expires: 1981-05-17
Abstract
No abstract record available.
Inventors
- 👤 Wawrousek Hans Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:28
CPC Classifications
C; C21; C21D; C21D8/00; C21D8/12; C21D8/1277; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/14766; H01F1/14775; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12465; Y10T428/12993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF MAKING DUCTILE HIGHLY GRAIN ORIENTED SILICON STEEL CONTAINING FROM ABOVE ABOUT 4% TO ABOUT 6% SILICON WHICH COMPRISES ALTERNATELY ROLLING AND HEAT TREATING SILICON STEEL SHEET MATERIAL CONTAINING FROM ABOVE ABOUT 4% TO ABOUT 6% SILICON FOR REDUCING THE SAME TO THE DESIRED THICKNESS AND DEVELOPING THE GRAIN CRYSTALS THEREIN IN A HIGH DEGREE OF DIRECTIONAL ORIENTATION, AND ELECTROLYTICALLY POLISHING THE THUS-PROCESSED SILICON STEEL MATERIAL.
Claim 2
Independent Claim
68 words
THE METHOD OF MAKING DUCTILE HIGHLY GRAIN ORIENTED SILICON STEEL CONTAINING FROM ABOVE ABOUT 4% TO ABOUT 6% SILICON WHICH COMPRISES ALTERNATELY ROLLING AND HEAT TREATING SILICON STEEL SHEET MATERIAL CONTAINING FROM ABOVE ABOUT 4% TO ABOUT 6% SILICON FOR REDUCING THE SAME TO THE DESIRED THICKNESS AND DEVELOPING THE GRAIN CRYSTALS THEREIN IN A HIGH DEGREE OF DIRECTIONAL ORIENTATION, AND ELECTROLYTICALLY POLISHING THE THUS-PROCESSED SILICON STEEL MATERIAL.
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |