US3295055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined unit of impedance
Assignee: TDK Corp
•
Filing: 1962-04-17
•
Granted: 1966-12-27
•
Expires: 1982-04-17
Abstract
No abstract record available.
Inventors
- 👤 Matsushima Mitsuo
- 👤 Ogawa Shigeaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:43
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/40; H01C; H01C7/00; H03; H03H; H03H5/00; H03H5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A COMPACT IMPEDANCE UNIT COMPRISING, IN COMBINATION, A TUBULAR BODY OF DIELECTRIC MATERIAL; AT LEAST A PAIR OF AXIALLY SPACED BANDS OF ELECTRICALLY CONDUCTIVE LOW RESISTANCE METAL ON THE OUTER SURFACE OF SAID BODY; TERMINAL LEADS EACH ELECTRICALLY CONNECTED TO A RESPECTIVE BAND; A LAYER OF HIGH ELECTRICAL RESISTANCE MATERIAL ON THE OUTER SURFACE OF SAID BODY AND ELECTRICALLY INTERCONNECTING SAID BANDS; A FERRITE CORE POSITIONED WITHIN SAID BODY; AND A WINDING ON SAID CORE HAVING ITS OPPOSITE ENDS ELECTRICALLY CONNECTED TO RESPECTIVE BANDS; SAID CORE AND SAID WINDING CONSTITUTING AN INDUCTIVE IMPEDANCE COMPONENT; AND SAID BANDS, IN COMBINATION WITH SAID LAYER OF HIGH ELECTRICAL RESISTANCE MATERIAL, CONSTITUTING A RESISTIVE IMPEDANCE COMPONENT.
Claim 2
Dependent Claim
112 words
A COMPACT IMPEDANCE UNIT COMPRISING, IN COMBINATION, A TUBULAR BODY OF DIELECTRIC MATERIAL; AT LEAST A PAIR OF AXIALLY SPACED BANDS OF ELECTRICALLY CONDUCTIVE LOW RESISTANCE METAL ON THE OUTER SURFACE OF SAID BODY; TERMINAL LEADS EACH ELECTRICALLY CONNECTED TO A RESPECTIVE BAND; A LAYER OF HIGH ELECTRICAL RESISTANCE MATERIAL ON THE OUTER SURFACE OF SAID BODY AND ELECTRICALLY INTERCONNECTING SAID BANDS; A FERRITE CORE POSITIONED WITHIN SAID BODY; AND A WINDING ON SAID CORE HAVING ITS OPPOSITE ENDS ELECTRICALLY CONNECTED TO RESPECTIVE BANDS; SAID CORE AND SAID WINDING CONSTITUTING AN INDUCTIVE IMPEDANCE COMPONENT; AND SAID BANDS, IN COMBINATION WITH SAID LAYER OF HIGH ELECTRICAL RESISTANCE MATERIAL, CONSTITUTING A RESISTIVE IMPEDANCE COMPONENT.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
US2724761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |