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US4263044A
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Iron/chromium/cobalt-base spinodal decomposition-type magnetic alloy
Assignee: Japan Kinoko Research Center Foundation
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Filing: 1979-04-06
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Granted: 1981-04-21
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Expires: 1999-04-06
Abstract
Abstract A spinodal decomposition type magnetic alloy consisting by weight essentially of 15 to 23% chromium, 10 to 18% cobalt, 0.5 to 4% vanadium, 0.3 to 3% titanium, 0.1 to 2.5% tungsten and the balance iron. The magnetic alloy can be cast into a machinable permanent magnet body and has a high magnetic energy property.
Inventors
- 👤 Kiyoshi Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:21
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/30; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04; H01F1/047; H01F1/053; H01F1/055
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
35 words
A spinodal decomposition type magnetic alloy consisting by weight essentially of 19 to 23% chromium, 10 to 18% cobalt, 0.5 to 4% vanadium, 0.3 to 3% titanium, 0.1 to 2.5% tungsten and the balance iron.
Claim 2
Dependent Claim
35 words
A spinodal decomposition type magnetic alloy consisting by weight essentially of 19 to 23% chromium, 10 to 18% cobalt, 0.5 to 4% vanadium, 0.3 to 3% titanium, 0.1 to 2.5% tungsten and the balance iron.
Claim 3
Dependent Claim
14 words
The alloy defined in claim 1 which contains 20 to 22% by weight chromium.
Claim 4
Dependent Claim
11 words
The alloy defined in claim 2 which contains about 21% chromium.
Claim 5
Dependent Claim
14 words
The alloy defined in claim 1 which contains 13 to 17% by weight cobalt.
Claim 6
Dependent Claim
12 words
The alloy defined in claim 4 which contains 15% by weight cobalt.
Claim 7
Dependent Claim
14 words
The alloy defined in claim 1 which contains 1 to 3% by weight vanadium.
Claim 8
Dependent Claim
13 words
The alloy defined in claim 6 which contains about 2% by weight vanadium.
Claim 9
Dependent Claim
12 words
The alloy defined in claim 1 which contains 0.2 to 2.0% tungsten.
Claim 10
Dependent Claim
13 words
The alloy defined in claim 8 which contains about 1% by weight tungsten.
Claim 11
Dependent Claim
12 words
The alloy defined in claim 1 which contains 1 to 2.2% titanium.
References Cited (Backward Citations)
US2432614A
Cited
US2617725A
Cited
US2848323A
Cited
US3099128A
Cited
US3600162A
Cited
US3588764A
Cited
US3806336A
Cited
US3901690A
Cited
JPS50101217A
Cited
US3986867A
Cited
US3954519A
Cited
JPS515612A
Cited
US4008105A
Cited
US4075437A
Cited
US4093477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |