Patent US3139568A successfully refreshed from Google Patents.
US3139568A
Expired / Lapsed
US
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Capacitor having a semi-conductive dielectric layer
Assignee: NEC Corp
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Filing: 1961-11-07
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Granted: 1964-06-30
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Expires: 1981-11-07
Abstract
No abstract record available.
Inventors
- 👤 Ishikawa Yoshiokl
- 👤 Sasaki Yozo
- 👤 Inowaki Shuichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:43
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A CAPACITOR THE COMBINATION COMPRISING: AN ANODE FORMED OF A SEMI-CONDUCTIVE MATERIAL COVERING A MAJORITY OF THE SURFACE OF SAID ANODE, A LAYER OF CONDUCTIVE, OXIDIZING MATERIAL IN INTIMATE CONTACT WITH THE EXTERNAL SURFACE OF SAID DIELECTRIC FILM, A FIRST ELECTRODE IN INTIMATE CONTACT WITH SAID LAYER OF CONDUCTIVE, OXIDIZING MATERIAL AND A SECOND ELECTRODE IN INTIMATE CONTACT WITH SAID ANODE AT A POINT NOT EMBRACED BY SAID DIELECTRIC FILM.
Claim 2
Dependent Claim
71 words
IN A CAPACITOR THE COMBINATION COMPRISING: AN ANODE FORMED OF A SEMI-CONDUCTIVE MATERIAL COVERING A MAJORITY OF THE SURFACE OF SAID ANODE, A LAYER OF CONDUCTIVE, OXIDIZING MATERIAL IN INTIMATE CONTACT WITH THE EXTERNAL SURFACE OF SAID DIELECTRIC FILM, A FIRST ELECTRODE IN INTIMATE CONTACT WITH SAID LAYER OF CONDUCTIVE, OXIDIZING MATERIAL AND A SECOND ELECTRODE IN INTIMATE CONTACT WITH SAID ANODE AT A POINT NOT EMBRACED BY SAID DIELECTRIC FILM.
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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |