Patent US3692048A successfully refreshed from Google Patents.
Patent US2921246A successfully refreshed from Google Patents.
US2921246A
Expired / Lapsed
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Electrical condensers
Assignee: Sprague Electric Co
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Filing: 1956-03-29
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Granted: 1960-01-12
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Expires: 1976-03-29
Abstract
No abstract record available.
Inventors
- 👤 David B Peck
- 👤 Robinson Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:58
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/228; H01G4/232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
IN A CONSOLUTELY WOUND LINERLY ORIENTED POLYETHYLENE TEREPHTHALATE FILM DIELECTRIC CAPACITOR COMPRISING A PLURALITY OF VAPOR DEPOSITED METAL ELECTRODES, EACH DISPOSED UPON A SURFACE DISORIENTED LINEARLY ORIENTED POLYETHYLENE TEREPHTHALATE FILM, AND IMPROVED ELECTRODE TERMINATION CONSISTING OF A LAYER OF SPRAYED MATAL PARTICLES DISPOSED ACROSS THE END OF SAID WOULD CAPACITOR
Claim 2
Dependent Claim
50 words
IN A CONSOLUTELY WOUND LINERLY ORIENTED POLYETHYLENE TEREPHTHALATE FILM DIELECTRIC CAPACITOR COMPRISING A PLURALITY OF VAPOR DEPOSITED METAL ELECTRODES, EACH DISPOSED UPON A SURFACE DISORIENTED LINEARLY ORIENTED POLYETHYLENE TEREPHTHALATE FILM, AND IMPROVED ELECTRODE TERMINATION CONSISTING OF A LAYER OF SPRAYED MATAL PARTICLES DISPOSED ACROSS THE END OF SAID WOULD CAPACITOR
References Cited (Backward Citations)
US2172604A
Cited
GB369309A
Cited
US2323020A
Cited
US2047452A
Cited
US2740732A
Cited
US2689805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |