US3634072A
Expired / Lapsed
US
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Magnetic alloy
Assignee: Carpenter Technology Corp
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Filing: 1970-05-21
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Granted: 1972-01-11
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Expires: 1990-05-21
Abstract
Abstract A magnetic alloy that is ductile and can be cold rolled containing by weight about 0.5-2.5 percent vanadium, 45-52 percent cobalt, at least one element selected from the group consisting of about 0.02-0.5 percent niobium and about 0.07-0.3 percent zirconium, and the balance iron except for incidental impurities.
Inventors
- 👤 Friedrich W Ackermann
- 👤 Ronald T Casani
- 👤 William A Klawitter
- 👤 Gerald B Heydt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:29
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/10; C22C19/00; C22C19/07; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
11 words
The alloy of claim 1 which contains about 1.5-2.5 percent vanadium.
Claim 2
Dependent Claim
12 words
The alloy of claim 2 which contains about 48.5- 49.5 percent cobalt.
Claim 3
Dependent Claim
11 words
The alloy of claim 3 which contains about 48.5-49.5 percent iron.
Claim 4
Dependent Claim
11 words
The alloy of claim 1 which contains about 0.05-0.3 percent niobium.
Claim 5
Dependent Claim
11 words
The alloy of claim 1 which contains about 0.1-0.3 percent zirconium.
Claim 6
Dependent Claim
20 words
The alloy of claim 5 which contains about 1.8-2.2 percent vanadium, about 48.5-49.5 percent cobalt, and about 48.5-49.5 percent iron.
Claim 7
Dependent Claim
20 words
The alloy of claim 6 which contains about 1.8-2.2 percent vanadium, about 48.5-49.5 percent cobalt, and about 48.5-49.5 percent iron.
References Cited (Backward Citations)
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Cited
GB404011A
Cited
GB496774A
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US2519277A
Cited
US3065118A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |