US3148315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallized thin film capacitor
Assignee: Sprague Electric Co
•
Filing: 1959-11-03
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Granted: 1964-09-08
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Expires: 1979-11-03
Abstract
No abstract record available.
Inventors
- 👤 Ernest B Rondeau
- 👤 Adelson Leonard
- 👤 Walter C Lamphier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:15
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/005; H01G4/015; H01G4/018; H01G4/20; H01G4/203; H01G4/32; H01G4/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A CAPACITOR HAVING A LAYER OF POROUS DIELECTRIC MATERIAL, A RESIN DIELECTRIC FILM ON ONE SURFACE OF SAID LAYER, A FIRST METAL COATING ON SAID FILM, A SECOND METAL COATING ON THE OTHER SURFACE OF SAID LAYER AND HAVING SUBSTANTIAL PENETRATION INTO SAID LAYER, WHEREBY THE ACTIVE DIELECTRIC BETWEEN SAID FIRST METAL COATING AND SAID SECOND METAL COATING IS SAID FILM PLUS THE UNPENETRATED PORTION OF SAID LAYER.
Claim 2
Dependent Claim
68 words
A CAPACITOR HAVING A LAYER OF POROUS DIELECTRIC MATERIAL, A RESIN DIELECTRIC FILM ON ONE SURFACE OF SAID LAYER, A FIRST METAL COATING ON SAID FILM, A SECOND METAL COATING ON THE OTHER SURFACE OF SAID LAYER AND HAVING SUBSTANTIAL PENETRATION INTO SAID LAYER, WHEREBY THE ACTIVE DIELECTRIC BETWEEN SAID FIRST METAL COATING AND SAID SECOND METAL COATING IS SAID FILM PLUS THE UNPENETRATED PORTION OF SAID LAYER.
References Cited (Backward Citations)
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Cited
US2919390A
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US2887649A
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US2938153A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |