US4236919A
Expired / Lapsed
US
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Magnetic alloy
Assignee: Mitsubishi Steel KK
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Filing: 1978-12-22
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Granted: 1980-12-02
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Expires: 1998-12-22
Abstract
Abstract A magnetic alloy of the Fe-Cr-Co type having superior magnetic properties compared to those of the conventional magnetic alloys of this kind and consisting essentially of, by weight, 5 to 30%Co, 15 to 35%Cr, 0.1 to 10%Ti, 0.1 to 10%V, 0.005 to 0.03%C, 0 to 0.1%Al, and the balance being Fe. The magnetic alloy according to the present invention may further contain 0.1 to 5% of one of the elements selected from the group consisting of W, Mo, Zr and Ta.
Inventors
- 👤 Kimiyuki Kamino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:01
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/30; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
35 words
A magnetic alloy of the Fe-Cr-Co type consisting essentially of, by weight, 5 to 30%Co, 15 to 35%Cr, 0.1 to 10%Ti, 0.1 to 10%V, 0.005 to 0.03%C, 0 to 0.1%Al, and the balance being Fe.
Claim 2
Dependent Claim
35 words
A magnetic alloy of the Fe-Cr-Co type consisting essentially of, by weight, 5 to 30%Co, 15 to 35%Cr, 0.1 to 10%Ti, 0.1 to 10%V, 0.005 to 0.03%C, 0 to 0.1%Al, and the balance being Fe.
Claim 3
Dependent Claim
60 words
A magnetic alloy of the Fe-Cr-Co type consisting essentially of, by weight, 5 to 30% Co, 15 to 35% Cr, 0.1 to 10% Ti, 0.1 to 10% V, 0.005 to 0.03 C, 0 to 0.1% Al, 0.1 to 5% X and the balance Fe wherein X is an element selected from the group consisting of W, Mo, Zr and Ta.
Claim 4
Dependent Claim
60 words
A magnetic alloy of the Fe-Cr-Co type consisting essentially of, by weight, 5 to 30% Co, 15 to 35% Cr, 0.1 to 10% Ti, 0.1 to 10% V, 0.005 to 0.03 C, 0 to 0.1% Al, 0.1 to 5% X and the balance Fe wherein X is an element selected from the group consisting of W, Mo, Zr and Ta.
References Cited (Backward Citations)
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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) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |