US4619720A
Expired / Lapsed
US
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Magnetic amorphous alloys comprising Co, Fe, Zr, and Nb
Assignee: Panasonic Holdings Corp
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Filing: 1984-09-04
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Granted: 1986-10-28
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Expires: 2004-09-04
Abstract
Abstract A magnetic amorphous alloy having a compositional formula (Co.sub.100-y Fe.sub.y).sub.100-x Zr.sub.100-w Nb.sub.w).sub.x in which 5≦x≦10, 0.5≦y≦4, and 20≦w≦90.
Inventors
- 👤 Ikuo Sakai
- 👤 Hiroyasu Karimoto
- 👤 Yasuhiko Nakayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:55
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/18; C; C22; C22C; C22C45/00; C22C45/04; G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/706; G11B5/70605; G11B5/70621; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/153; H01F1/15316
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
18 words
A magnetic amorphous alloy having a compositional formula (Co.sub.100-y Fe.sub.y).sub.100-x (Zr.sub.100-w Nb.sub.w).sub.x in which 5≦x≦10, 0.5≦y≦4, and 20≦w≦90.
Claim 2
Dependent Claim
18 words
A magnetic amorphous alloy having a compositional formula (Co.sub.100-y Fe.sub.y).sub.100-x (Zr.sub.100-w Nb.sub.w).sub.x in which 5≦x≦10, 0.5≦y≦4, and 20≦w≦90.
Claim 3
Dependent Claim
15 words
The magnetic amorphous alloy according to claim 1, wherein said alloy is prepared by sputtering.
Claim 4
Dependent Claim
31 words
The magnetic amorphous alloy according to claim 1, wherein said alloy has a crystallization temperature not lower than 450° C. and a saturation magnetic flux density not lower than 10,000 gausses.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-10-27 | 1990-04-28 | 1990-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-27 | 1994-04-28 | 1994-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-27 | 1998-04-28 | 1998-10-28 | $7700.00 | Window Closed / Lapsed |