Patent US3106534A successfully refreshed from Google Patents.
US3106534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soft magnetic ferrite bodies of high permeability and small hysteresis losses
Assignee: NEC Corp
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Filing: 1961-01-17
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Granted: 1963-10-08
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Expires: 1981-01-17
Abstract
No abstract record available.
Inventors
- 👤 Akashi Tsuneo
- 👤 Takamizawa Hideo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:45
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2608; C04B35/2633
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A SINTERED MANGANESE-ZINC FERRITE COMPOSITION CONSISTING ESSENTIALLY OF 52 TO 55 MOL PERCENT OF FE2O3, 25 TO 37 MOL PERCENT OF MNO AND 23 TO 8 MOL PERCENT OF ZNO, AND ALSO COMBINING THE TWO ADDITIONS CONSISTING OF 0.05% TO 0.3% BY WEIGHT OF CALCIUM OXIDE AND 0.005% TO 0.035% BY WEIGHT OF SILICON DIOXIDE, WHEREBY THE PERMEABILITY AND HYSTERSIS LOSSES OF SAID FERRITE COMPOSITION ARE MATERIALLY INCREASED AND DECREASED ABOVE AND BELOW, RESPECTIVELY, THE PERMEABILITY AND HYDTERSIS LOSSES OF THE SAME COMPOSITION CONTAINING ONLY ONE OF SAID TWO ADDITIONS.
Claim 2
Dependent Claim
90 words
A SINTERED MANGANESE-ZINC FERRITE COMPOSITION CONSISTING ESSENTIALLY OF 52 TO 55 MOL PERCENT OF FE2O3, 25 TO 37 MOL PERCENT OF MNO AND 23 TO 8 MOL PERCENT OF ZNO, AND ALSO COMBINING THE TWO ADDITIONS CONSISTING OF 0.05% TO 0.3% BY WEIGHT OF CALCIUM OXIDE AND 0.005% TO 0.035% BY WEIGHT OF SILICON DIOXIDE, WHEREBY THE PERMEABILITY AND HYSTERSIS LOSSES OF SAID FERRITE COMPOSITION ARE MATERIALLY INCREASED AND DECREASED ABOVE AND BELOW, RESPECTIVELY, THE PERMEABILITY AND HYDTERSIS LOSSES OF THE SAME COMPOSITION CONTAINING ONLY ONE OF SAID TWO ADDITIONS.
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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |