Patent US3961946A successfully refreshed from Google Patents.
US3961946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic alloy for use in thermo and magneto printing
Assignee: Sony Corp
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Filing: 1975-02-06
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Granted: 1976-06-08
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Expires: 1995-02-06
Abstract
Abstract Magnetic alloy containing platinum, cobalt and nickel is disclosed which is suitable for use with magnetic recording medium, especially for use with an intermediate magnetic recording medium in thermo and magneto printing.
Inventors
- 👤 Yoshimi Makino
- 👤 Shigeyasu Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:44
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04; C; C22; C22C; C22C5/00; G; G03; G03G; G03G5/00; G03G5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
Magnetic alloy for use in thermo and magneto printing, containing platinum, nickel and cobalt, as represented Pt x (Ni y Co 1-y ) 1-x where x being not less than 0.45 and not more than 0.55, y being not less than 0.65 and not more than 0.86.
Claim 2
Dependent Claim
47 words
Magnetic alloy for use in thermo and magneto printing, containing platinum, nickel and cobalt, as represented Pt x (Ni y Co 1-y ) 1-x where x being not less than 0.45 and not more than 0.55, y being not less than 0.65 and not more than 0.86.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |