Patent US3346789A successfully refreshed from Google Patents.
US3346789A
Expired / Lapsed
US
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Electrical capacitor with impregnated metallized electrode
Assignee: Sprague Electric Co
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Filing: 1965-10-22
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Granted: 1967-10-10
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Robinson Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:32
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/005; H01G4/008; H01G4/018; H01G4/20; H01G4/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A CAPACITANCE SECTION HAVING TWO ELECTRODES SEPARATED BY DISTINCT NON-POROUS PLASTIC FILMS, AT LEAST ONE OF SAID ELECTRODES BEING OF POROUS DIELECTRIC MATERIAL WHICH IS METALLIZED ON BOTH FACES WITH THE METALLIZD SURFACES BEING ELECTRICALLY INTERCONNECTED THROUGH THE PORES OF SAID MATERIAL, SAID SECTION BEING FULLY IMPREGNATED WITH A
Claim 2
Dependent Claim
49 words
A CAPACITANCE SECTION HAVING TWO ELECTRODES SEPARATED BY DISTINCT NON-POROUS PLASTIC FILMS, AT LEAST ONE OF SAID ELECTRODES BEING OF POROUS DIELECTRIC MATERIAL WHICH IS METALLIZED ON BOTH FACES WITH THE METALLIZD SURFACES BEING ELECTRICALLY INTERCONNECTED THROUGH THE PORES OF SAID MATERIAL, SAID SECTION BEING FULLY IMPREGNATED WITH A
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |