US4385932A
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Amorphous magnetic alloy
Assignee: Toshiba Corp
•
Filing: 1981-06-04
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Granted: 1983-05-31
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Expires: 2001-06-04
Abstract
Abstract An amorphous magnetic alloy has a general formula: (Fe.sub.1-a.Ni.sub.a).sub.100-x-y.Si.sub.x.B.sub.y where 0.2≦a≦0.7 1≦x≦20 5≦y≦9.5 15≦x+y≦29.5 The alloy is low in iron loss and suitable for forming a magnetic core used under a high frequency.
Inventors
- 👤 Koichiro Inomata
- 👤 Michio Hasegawa
- 👤 Senji Shimanuki
- 👤 Masakatsu Haga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:32
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/153; H01F1/15308; C; C22; C22C; C22C45/00; C22C45/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
18 words
An amorphous magnetic alloy low in iron loss having a general formula: (Fe.sub.1-a.Ni.sub.a).sub.100-x-y.Si.sub.x.B.sub.y where, 0.2≦a≦0.7 1≦x≦20 5≦y≦9.5 10.5≦x+y≦29.5.
Claim 2
Dependent Claim
18 words
An amorphous magnetic alloy low in iron loss having a general formula: (Fe.sub.1-a.Ni.sub.a).sub.100-x-y.Si.sub.x.B.sub.y where, 0.2≦a≦0.7 1≦x≦20 5≦y≦9.5 10.5≦x+y≦29.5.
Claim 3
Dependent Claim
17 words
The amorphous magnetic alloy according to claim 1, wherein the boron content meets the condition of: 6≦y≦8.
Claim 4
Dependent Claim
17 words
The amorphous magnetic alloy according to claim 1, wherein the nickel content meets the condition of: 0.3≦a≦0.45.
Claim 5
Dependent Claim
54 words
The amorphous magnetic alloy according to claim 1, wherein Fe is partly replaced by at least one element selected from the group consisting of Ti, V, Cr, Mn, Co, Zr, Nb, Mo, Ta and W in an amount of 1 to 10 atomic % based on the sum of transition metals in the alloy.
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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) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |