US2887634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded polystyrene capacitor
Assignee: Sprague Electric Co
•
Filing: 1954-05-03
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Granted: 1959-05-19
•
Expires: 1974-05-03
Abstract
No abstract record available.
Inventors
- 👤 David B Peck
- 👤 Robert J Lockhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:38
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/12; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/14; H01G4/18; H01G4/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
AN ELECTRICAL CAPACITOR COMPRISING A SHUNKEN CONDENSER SECTION COMPOSED OF CONVOLUTELY WOUND ELECTRODE FOILS SEPARATED BY AND WRAPPED WITHIN THE LAYERS OF A DIELECTRIC MATERIAL CONSISTING OF A PARTIALLY DISORIENTED POLYVINYL AROMATIC HYDROCARBON RESIN, SAID SEC TION BEING COMPLETELY ENCASED IN AND MAINTAINED UNDER COMPRESSION BY A THERMOSET RESIN HAVING A MOLDING TEM-
Claim 2
Dependent Claim
53 words
AN ELECTRICAL CAPACITOR COMPRISING A SHUNKEN CONDENSER SECTION COMPOSED OF CONVOLUTELY WOUND ELECTRODE FOILS SEPARATED BY AND WRAPPED WITHIN THE LAYERS OF A DIELECTRIC MATERIAL CONSISTING OF A PARTIALLY DISORIENTED POLYVINYL AROMATIC HYDROCARBON RESIN, SAID SEC TION BEING COMPLETELY ENCASED IN AND MAINTAINED UNDER COMPRESSION BY A THERMOSET RESIN HAVING A MOLDING TEM-
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Cited
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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) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |