US3248676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed magnetic cores
Assignee: TDK Micronas GmbH
•
Filing: 1962-04-12
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Granted: 1966-04-26
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Expires: 1982-04-12
Abstract
No abstract record available.
Inventors
- 👤 Marley John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:06
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/80; H03K17/82; G; G11; G11B; G11B5/00; G11B5/62; H01; H01F; H01F1/00; H03K3/00; H03K3/02; H03K3/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A HIGH SPEED MAGNETIC CORE COMPOSED OF A GENERALLY TOROIDAL SHAPED FERRO-MAGNETIC MATERIAL WHICH HAS A TRECTANGULAR HYSTERESIS LOOP, SAID CORE HAVING A CROSS SECTIONAL AREA DEFINED BY AN OUTER AND AT LEAST ONE INNER PERIPHERY, SAID OUTER AND INNER PERIPHERIES EACH HAVING A UNIFORM WIDTH, AND A DIAMETRICAL CROSS SECTION WHEREIN THE OUTER PERIPHERY AT ITS WIDEST DIMENSION IS THICKER THAN THE INNER PERIPHERY.
Claim 2
Dependent Claim
65 words
A HIGH SPEED MAGNETIC CORE COMPOSED OF A GENERALLY TOROIDAL SHAPED FERRO-MAGNETIC MATERIAL WHICH HAS A TRECTANGULAR HYSTERESIS LOOP, SAID CORE HAVING A CROSS SECTIONAL AREA DEFINED BY AN OUTER AND AT LEAST ONE INNER PERIPHERY, SAID OUTER AND INNER PERIPHERIES EACH HAVING A UNIFORM WIDTH, AND A DIAMETRICAL CROSS SECTION WHEREIN THE OUTER PERIPHERY AT ITS WIDEST DIMENSION IS THICKER THAN THE INNER PERIPHERY.
References Cited (Backward Citations)
US2615996A
Cited
US2799822A
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US2818551A
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US2825892A
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US2982948A
Cited
US3092813A
Cited
US3157866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |