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US3812407A
Expired / Lapsed
US
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Capacitor
Assignee: Nichicon Corp
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Filing: 1973-01-29
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Granted: 1974-05-21
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Expires: 1993-01-29
Abstract
Abstract A capacitor having a laminated dielectric formed of layers of paper and a synthetic resin and then impregnated with an aromatic hydrocarbon oil.
Inventors
- 👤 K Nose
- 👤 S Nishikawa
- 👤 Y Shinbo
- 👤 Y Kokura
- 👤 N Hizaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:40
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/20; H01G4/22; H01G4/221; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
A capacitor comprising a pair of electrodes and a dielectric layer between said electrodes and consisting of synthetic resin and paper layers, wherein said capacitor is impRegnated with an aromatic hydrocarbon oil having viscosity lower than 40 centistokes at 15* C, mean molecular weight of 180 to 320, fluidization point lower than -40* C and boiling point higher than 280* C, said aromatic hydrocarbon oil containing at the same time at least one of monocyclic compounds and at least one of polycyclic compounds.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |