US2938153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical capacitors
Assignee: Sprague Electric Co
•
Filing: 1956-05-14
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Granted: 1960-05-24
•
Expires: 1976-05-14
Abstract
No abstract record available.
Inventors
- 👤 Paul H Netherwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:15
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/185; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/14; H01G4/18; H01G4/20; H01G4/203
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A CONVOLUTELY WOUND SELF-HEALING CAPACITOR HAVING TWO VAPOR-DEPOSITED METAL STRATA EACH ON A RESIN FILM DISPOSED ON A POROUS MATRIX, SAID FILM COMPRISING A RESIN OBTAINED BY THE CROSS-LINKING OF A SUBSTANCE FROM THE GROUP CONSISTING OF CELLULOSE ESTERS, CELLULOSE ETHERS AND VINYL COMPOUNDS WITH A POLYFUNCTIONAL VILNYL COMPOUND
Claim 2
Dependent Claim
49 words
A CONVOLUTELY WOUND SELF-HEALING CAPACITOR HAVING TWO VAPOR-DEPOSITED METAL STRATA EACH ON A RESIN FILM DISPOSED ON A POROUS MATRIX, SAID FILM COMPRISING A RESIN OBTAINED BY THE CROSS-LINKING OF A SUBSTANCE FROM THE GROUP CONSISTING OF CELLULOSE ESTERS, CELLULOSE ETHERS AND VINYL COMPOUNDS WITH A POLYFUNCTIONAL VILNYL COMPOUND
References Cited (Backward Citations)
US1745400A
Cited
US2155590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |