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US4293336A
Expired / Lapsed
US
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Cold rolled non-oriented electrical steel sheet
Assignee: JFE Steel Corp
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Filing: 1980-05-27
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Granted: 1981-10-06
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Expires: 2000-05-27
Abstract
Abstract A cold rolled non-oriented electrical steel sheet having a low iron loss is disclosed. The steel sheet consists of not more than 0.02% of C, 0.1-3.5% of Si, not more than 1.0% of Al, 0.1-1.0% of Mn, 0.03-0.40% of Sn and the remainder being substantially Fe.
Inventors
- 👤 Ko Matsumura
- 👤 Hiroto Nakamura
- 👤 Toshio Irie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:27
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; C; C22; C22C; C22C38/00; C22C38/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A cold rolled non-oriented electrical steel sheet having a low iron loss, which consists of not more than 0.02% by weight of C, 0.1-3.5% by weight of Si, not more than 1.0% by weight of Al, 0.1-1.0% by weight of Mn, 0.03-0.40% by weight of Sn and the remainder being essentially iron.
Claim 2
Dependent Claim
52 words
A cold rolled non-oriented electrical steel sheet having a low iron loss, which consists of not more than 0.02% by weight of C, 0.1-3.5% by weight of Si, not more than 1.0% by weight of Al, 0.1-1.0% by weight of Mn, 0.03-0.40% by weight of Sn and the remainder being essentially iron.
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) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |